Telephone and Data Systems
TDS
#3572
Rank
โ‚น391.54 B
Marketcap
โ‚น3,401
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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
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FORM 10-K

(MARK ONE)

<TABLE>
<C> <S>
/X/ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
SECURITIES EXCHANGE ACT OF 1934
</TABLE>

FOR THE FISCAL YEAR ENDED DECEMBER 31, 1999
OR

<TABLE>
<C> <S>
/ / TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
SECURITIES EXCHANGE ACT OF 1934
</TABLE>

Commission file number 001-14157
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TELEPHONE AND DATA SYSTEMS, INC.
(Exact name of registrant as specified in its charter)

<TABLE>
<S> <C>
DELAWARE 36-2669023
(State or other jurisdiction (IRS Employer Identification No.)
of incorporation or organization)
30 NORTH LASALLE STREET, CHICAGO, ILLINOIS 60602
(Address of principal executive offices) (Zip code)
</TABLE>

REGISTRANT'S TELEPHONE NUMBER: (312) 630-1900

Securities registered pursuant to Section 12(b) of the Act:

<TABLE>
<CAPTION>
TITLE OF EACH CLASS NAME OF EACH EXCHANGE ON WHICH REGISTERED
------------------- -----------------------------------------
<S> <C>
Common Shares, $.01 par value American Stock Exchange
8.5% TDS-Obligated Mandatorily
Redeemable Preferred Securities
of Subsidiary Trust American Stock Exchange
8.04% TDS-Obligated
Mandatorily Redeemable Preferred
Securities of Subsidiary Trust American Stock Exchange
</TABLE>

Securities registered pursuant to Section 12(g) of the Act: None
---------------------

Indicate by check mark whether the registrant (1) has filed all reports
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding 12 months (or for such shorter period that the
registrant was required to file such reports), and (2) has been subject to such
filing requirements for the past 90 days.

Yes _X_ No ___

Indicate by check mark if disclosure of delinquent filers pursuant to Item
405 of Regulation S-K is not contained herein, and will not be contained, to the
best of registrant's knowledge, in definitive proxy or information statements
incorporated by reference in Part III of this Form 10-K or any amendment to this
Form 10-K. _X_

As of February 29, 2000, the aggregate market values of the registrant's
Common Shares, Series A Common Shares and Preferred Shares held by
non-affiliates were approximately $5.7 billion, $38.8 million and $28.3 million,
respectively. The closing price of the Common Shares on February 29, 2000, was
$105.50, as reported by the American Stock Exchange. Because no market exists
for the Series A Common Shares and Preferred Shares, the registrant has assumed
for purposes hereof that (i) each Series A Common Share has a market value equal
to one Common Share because the Series A Common Shares were initially issued by
the registrant in exchange for Common Shares on a one-for-one basis and are
convertible on a share-for-share basis into Common Shares, (ii) each
nonconvertible Preferred Share has a market value of $100 because each of such
shares had a stated value of $100 when issued, and (iii) each convertible
Preferred Share has a value of $105.50 times the number of Common Shares into
which it was convertible on February 29, 2000.

The number of shares outstanding of each of the registrant's classes of
common stock, as of February 29, 2000, is 54,197,342 Common Shares, $.01 par
value, and 6,958,391 Series A Common Shares, $.01 par value.

DOCUMENTS INCORPORATED BY REFERENCE

Those sections or portions of the registrant's 1999 Annual Report to
Shareholders and of the registrant's Notice of Annual Meeting of Shareholders
and Proxy Statement for its Annual Meeting of Shareholders to be held May 19,
2000, described in the cross reference sheet and table of contents attached
hereto are incorporated by reference into Part II and III of this report.

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CROSS REFERENCE SHEET
AND
TABLE OF CONTENTS

<TABLE>
<CAPTION>
PAGE NUMBER
OR REFERENCE(1)
---------------
<S> <C> <C>
Item 1. Business.................................................... 3
Item 2. Properties.................................................. 46
Item 3. Legal Proceedings........................................... 46
Item 4. Submission of Matters to a Vote of Security Holders......... 46
Item 5. Market for Registrant's Common Equity and Related
Stockholder Matters....................................... 47(2)
Item 6. Selected Financial Data..................................... 47(3)
Item 7. Management's Discussion and Analysis of Financial Condition
and Results of Operations................................. 47(4)
Item 7A. Quantitative and Qualitative Disclosures About Market
Risk...................................................... 47(4)
Item 8. Financial Statements and Supplementary Data................. 47(5)
Item 9. Changes in and Disagreements with Accountants on Accounting
and Financial Disclosure.................................. 47
Item 10. Directors and Executive Officers of the Registrant.......... 48(6)
Item 11. Executive Compensation...................................... 48(7)
Item 12. Security Ownership of Certain Beneficial Owners and
Management................................................ 48(8)
Item 13. Certain Relationships and Related Transactions.............. 48(9)
Item 14. Exhibits, Financial Statement Schedules and Reports on Form
8-K....................................................... 49
</TABLE>

- ------------------------

(1) Parenthetical references are to information incorporated by reference from
the registrant's Exhibit 13, which includes portions of its Annual Report to
Shareholders for the year ended December 31, 1999 ("Annual Report") and from
the registrant's Notice of Annual Meeting of Shareholders and Proxy
Statement for its Annual Meeting of Shareholders to be held on May 19, 2000
("Proxy Statement").

(2) Annual Report sections entitled "TDS Stock and Dividend Information" and
"Market Price per Common Share by Quarter."

(3) Annual Report section entitled "Selected Consolidated Financial Data."

(4) Annual Report section entitled "Management's Discussion and Analysis of
Results of Operations and Financial Condition."

(5) Annual Report sections entitled "Consolidated Statements of Operations,"
"Consolidated Statements of Cash Flows," "Consolidated Balance Sheets,"
"Consolidated Statements of Common Stockholders' Equity," "Notes to
Consolidated Financial Statements," "Consolidated Quarterly Income
Information (Unaudited)" and "Report of Independent Public Accountants."

(6) Proxy Statement sections entitled "Election of Directors" and "Executive
Officers."

(7) Proxy Statement section entitled "Executive Compensation," except for the
information specified in Item 402(a)(8) of Regulation S-K under the
Securities Exchange Act of 1934, as amended.

(8) Proxy Statement section entitled "Security Ownership of Certain Beneficial
Owners and Management."

(9) Proxy Statement section entitled "Certain Relationships and Related
Transactions."

2
TELEPHONE AND DATA SYSTEMS, INC.
30 NORTH LASALLE STREET, CHICAGO, ILLINOIS 60602
TELEPHONE (312) 630-1900

[LOGO]

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PART I
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ITEM 1. BUSINESS

Telephone and Data Systems, Inc. ("TDS"), is a diversified
telecommunications service company with cellular telephone and telephone
operations. At December 31, 1999, TDS served approximately 3.2 million customer
units in 35 states, including 2,602,000 cellular telephones and 645,800
telephone access lines. For the year ended December 31, 1999, cellular
operations provided 72% of TDS's consolidated revenues and telephone operations
provided 28%. TDS's long-term business development strategy is to expand its
existing operations through internal growth and acquisitions and to explore and
develop other telecommunications businesses that management believes will
utilize TDS expertise in customer-based telecommunications. On September 17,
1999, the Board of Directors of TDS approved a plan of merger between Aerial
Communications Inc. and VoiceStream Wireless Corporation. See Discontinued
Operations.

TDS, conducts substantially all of its cellular operations through its
80.7%-owned subsidiary, United States Cellular Corporation. U.S. Cellular is
traded on the American Stock Exchange under the symbol "USM". At December 31,
1999, U.S. Cellular provided cellular telephone service to 2,602,000 customers
through 139 majority-owned and managed ("consolidated") cellular systems serving
approximately 17% of the geography and approximately 9% of the population of the
United States. Since 1985, when U.S. Cellular began providing cellular service
in Knoxville, Tennessee, U.S. Cellular has expanded its cellular networks and
customer service operations to cover 145 managed markets in 26 states as of
December 31, 1999. In total, U.S. Cellular operated eight market clusters, of
which four had a total population of more than two million, and each of which
had a total population of more than one million. Overall, 91% of
U.S. Cellular's 26.4 million population equivalents were in markets which were
consolidated, 1% were in managed but not consolidated markets and 8% were in
markets in which U.S. Cellular holds an investment interest.

TDS conducts substantially all of its telephone operations through its
wholly-owned subsidiary, TDS Telecommunications Corporation ("TDS Telecom"). At
December 31, 1999, TDS Telecom operated 104 Incumbent Local Exchange Carrier
("ILEC") telephone companies serving 571,700 access lines in 28 states. TDS
Telecom is expanding by offering additional lines of telecommunications products
and services to existing customers and through the selective acquisition of
local exchange telephone companies serving rural and suburban areas. TDS Telecom
has acquired 13 telephone companies and divested one telephone company since the
beginning of 1995. These net acquisitions added 56,800 access lines during this
five-year period, while internal growth added 122,400 lines. TDS Telecom also
began offering services as a Competitive Local Exchange Carrier ("CLEC") in 1998
in certain markets in certain second and third-tier cities. At December 31,
1999, TDS Telecom's CLECs served 74,100 access lines.

3
TDS was incorporated in 1968 and changed its corporate domicile from Iowa to
Delaware in 1998. TDS executive offices are located at 30 North LaSalle Street,
Chicago, Illinois 60602. Its telephone number is 312-630-1900.

Unless the context indicates otherwise: (i) references to "TDS" refer to
Telephone and Data Systems, Inc., and its subsidiaries; (ii) references to "USM"
or "U.S. Cellular" refer to United States Cellular Corporation and its
subsidiaries; (iii) references to "TDS Telecom" refer to TDS Telecommunications
Corporation and its subsidiaries; (iv) references to "AERL" or "Aerial" refer to
Aerial Communications, Inc. and its subsidiaries; (v) references to "MSA" or to
a particular city refer to the Metropolitan Statistical Area, as designated by
the U.S. Office of Management and Budget and used by the Federal Communications
Commission ("FCC") in designating metropolitan cellular market areas;
(vi) references to "RSA" refer to the Rural Service Area, as used by the FCC in
designating non-MSA cellular market areas; (vii) references to cellular
"markets" or "systems" refer to MSAs, RSAs or both; (viii) references to "MTA"
refer to Major Trading Areas, as used by the FCC in designating PCS markets;
(ix) references to "population equivalents" mean the population of a market,
based on 1999 Claritas estimates, multiplied by the percentage interests that
TDS owns or has the right to acquire in an entity licensed, designated to
receive a license or expected to receive a construction permit ("licensee") by
the FCC to construct or operate a cellular or a personal communications service
("PCS") system in such market.

PRIVATE SECURITIES LITIGATION REFORM ACT OF 1995 SAFE HARBOR CAUTIONARY
STATEMENT

This Annual Report on Form 10-K, including exhibits, contains statements
that are not based on historical fact, including the words "believes,"
"anticipates," "intends," "expects," and similar words. These statements
constitute "forward-looking statements" within the meaning of the Private
Securities Litigation Reform Act of 1995. Such forward-looking statements
involve known and unknown risks, uncertainties and other factors that may cause
the actual results, events or developments to be significantly different from
any future results, events or developments expressed or implied by such
forward-looking statements. Such factors include:

- general economic and business conditions, both nationally and in the
regions in which TDS operates,

- technology changes,

- competition,

- changes in business strategy or development plans,

- changes in governmental regulations,

- TDS's ability and the ability of its third-party suppliers to take
corrective action in a timely manner with respect to the year 2000 issue,

- availability of future financing,

- changes in growth in cellular customers, penetration rates, and churn
rates, and

- completion and timing of the merger between Aerial and VoiceStream.

TDS undertakes no obligation to update publicly any forward-looking
statements whether as a result of new information, future events or otherwise.
Readers should evaluate any statements in light of these important factors.

DISCONTINUED OPERATIONS

On September 17, 1999, the Board of Directors of TDS decided not to pursue a
spin-off of Aerial Communications, Inc., an 82.1%-owned subsidiary of TDS, and
approved a merger between Aerial and VoiceStream Wireless Corporation
("VoiceStream") pursuant to an Agreement and Plan of Reorganization dated
September 17, 1999. As a result of the merger, Aerial shareholders will receive

4
0.455 VoiceStream common shares for each share of Aerial stock they own, subject
to adjustment in certain circumstances. Aerial public shareholders will have a
right to elect to receive $18 in cash in lieu of shares of VoiceStream. The
parties anticipate that the merger will be tax-free to Aerial shareholders that
elect to receive VoiceStream stock. This merger is subject to the approval of
the Federal Communications Commission. The merger is expected to close in the
second quarter of 2000.

The merger agreement provides for TDS to be released from its guarantees of
Aerial's long-term debt and vendor financing at the closing of the merger. TDS
has also agreed to advance approximately $280 million to Aerial under the
revolving credit agreement between TDS and a subsidiary of Aerial. At
December 31, 1999, TDS had loaned a total of $37.8 million to Aerial. At the
time of the merger, under certain circumstances, TDS is required to advance
funds to a subsidiary of Aerial to bring the amount outstanding under the
revolving credit agreement to $315 million. The $315 million outstanding will be
repaid by VoiceStream one year from the date of the merger, or earlier at
VoiceStream's option.

Aerial is traded on the NASDAQ market under the symbol "AERL". Aerial
provides PCS service in the Minneapolis, Tampa-St. Petersburg-Orlando, Houston,
Pittsburgh, Kansas City and Columbus Major Trading Areas ("MTAs"). Such PCS
markets include approximately 27.9 million population equivalents. Aerial has
commenced service in all its markets and provided service to 422,900 PCS
telephones as of December 31, 1999.

TDS expects to recognize a net gain on the ultimate disposition of Aerial
and, accordingly, has deferred recognition of Aerial's net operating losses
subsequent to September 17, 1999 which will be offset against the expected gain
upon closing of the merger. As of December 31, 1999, TDS has deferred Aerial net
operating losses totaling $44.2 million.

Pursuant to a Debt/Equity Replacement Agreement entered into between TDS and
Aerial on September 17, 1999 in connection with the Aerial-VoiceStream plan of
merger, on November 1, 1999, TDS converted $420 million of intercompany debt due
from a subsidiary of Aerial into 19.1 million Aerial Common Shares at $22 per
share. On September 17, 1999, the date of the TDS Debt/Equity Replacement
Agreement, the closing price of Aerial Common Shares was $20 per share. Also on
November 1, 1999, Sonera invested an additional $230 million into the equity of
Aerial and one of its subsidiaries, also at an equivalent price of $22 per
Aerial share.

On September 21, 1999, Herbert Behrens, who purports to be an Aerial
stockholder, filed a putative class action complaint on behalf of stockholders
of Aerial in the Court of Chancery of the State of Delaware in New Castle
County. The complaint names as defendants Aerial, TDS, certain directors of
Aerial and TDS, and VoiceStream in connection with the transactions contemplated
by the Agreement and Plan of Reorganization and the related agreements,
particularly the Debt/Equity Replacement Agreement. The complaint alleges a
breach of fiduciary duties by the defendants, including in connection with the
exchange of $420 million of debt owed by Aerial to TDS for Aerial common stock
at $22 per share. The complaint alleges that this action benefits TDS at the
expense of Aerial's public stockholders and seeks to have the transactions
contemplated by the Agreement and Plan of Reorganization enjoined or, if they
are consummated, to have them rescinded and to recover unspecified damages, fees
and expenses. The defendants believe that this lawsuit is without merit and
intend to vigorously defend against this lawsuit.

In connection with the merger agreement between Aerial and VoiceStream,
Sonera, TDS and Aerial also reached an agreement to settle all their disputes
relating to Sonera's earlier investment in the Aerial subsidiary, effective at
the closing of the merger. This dispute is discussed below.

On September 8, 1998, pursuant to a purchase agreement among TDS, Aerial,
Aerial Operating Company, Inc., and Sonera Corporation a company organized under
the laws of Finland and formerly known as Sonera Ltd., Sonera purchased
approximately 2.4 million shares of common stock of Aerial Operating Company,
representing a 19.423% equity interest in Aerial Operating Company, subject to
adjustment under certain circumstances, for an aggregate purchase price of
$200 million. Sonera has the right, subject to adjustment under certain
circumstances, to exchange each share of Aerial Operating Company common stock
which it owns for 6.72919 Common Shares of Aerial. Upon the

5
exchange of all of the Aerial Operating Company shares, Sonera would have owned
an 18.452% equity interest in Aerial, reflecting a purchase price equivalent to
$12.33 per Common Share (the "Equivalent Purchase Price").

Following the announcement by TDS in December 1998 that it intended to
distribute to its shareholders all of the capital stock of Aerial that it owns,
and that Aerial would seek additional financing from sources other than TDS in
connection therewith, Sonera contacted TDS to express certain concerns. Sonera
asserted, among other things, that Aerial and TDS misrepresented and failed to
disclose certain material facts to Sonera, thereby inducing Sonera to pay an
excessive price for the Aerial Operating Company common stock. Sonera requested
the renegotiation of certain matters related to Sonera's investment in Aerial
Operating Company, including an adjustment in the Equivalent Purchase Price, and
raised the possibility of litigation in connection therewith.

Under the Purchase Agreement, the number of Aerial Operating Company shares
purchased by Sonera is subject to reduction if the average price of Aerial's
Common Shares exceeds certain threshold prices during the first three years
after Sonera's investment. During the second quarter and on July 7, 1999, the
average price of Aerial's Common Shares exceeded all of the threshold prices set
forth in the Purchase Agreement. Accordingly, Aerial requested Sonera to
surrender for cancellation an aggregate of 634,216 shares of Aerial Operating
Company common stock. Sonera refused to surrender any Aerial Operating Company
shares and, in connection with its allegations, as discussed above, objected to
the application of the share reduction provisions in the Purchase Agreement.

In connection with an Agreement and Plan of Reorganization, Sonera, TDS,
Aerial and Aerial Operating Company executed a Settlement Agreement and Release
as of September 17, 1999. Under the Settlement Agreement and Release, Sonera
surrendered for cancellation 317,108 Aerial Operating Company shares,
representing one-half of the 634,216 disputed shares, on November 1, 1999,
without releasing its claims with respect to such surrendered shares, in
connection with the closing of transactions under a Debt/Equity Replacement
Agreement. Upon satisfaction of all of the conditions to the closing of the
transactions contemplated by the Agreement and Plan of Reorganization, the
remaining 317,108 Aerial Operating Company shares will be surrendered for
cancellation immediately prior to the closing of such transactions. At this
closing, each of Sonera and Sonera U.S., on the one hand, and TDS, Aerial,
Aerial Operating Company, VoiceStream and VoiceStream Holdings, on the other
hand, will release each other from all claims relating to actions occurring
through the date of the Settlement Agreement and Release, including all claims
by Sonera to all of the disputed shares and, subject to certain exceptions, will
extend such release to actions occurring through the date of such closing. Also
at that closing, the Purchase Agreement and the other agreements entered into in
connection with Sonera's original investment in Aerial Operating Company will be
terminated.

CELLULAR TELEPHONE OPERATIONS

TDS's cellular operations are conducted through U.S. Cellular and its
subsidiaries. U.S. Cellular is the eighth largest wireless company in the United
States, based on the aggregate number of customers in its consolidated markets.
U.S. Cellular's corporate development strategy is to operate controlling
interests in cellular market licensees in areas adjacent to or in proximity to
its other markets, thereby building clusters of operating markets. Customers
benefit from larger service areas such as these, which provide longer
uninterrupted service and the ability to make outgoing calls and receive
incoming calls within the designated area without special roaming arrangements.
In addition, U.S. Cellular anticipates that clustering will continue to provide
it certain economies in its capital and operating costs. Over the past few
years, U.S. Cellular has completed exchanges of controlling interests in its
less strategic markets for controlling interests in markets which better
complement its clusters. U.S. Cellular has also completed outright sales of
other less strategic markets, and has purchased controlling interests in markets
which enhance its clusters.

6
The following table summarizes the status of U.S. Cellular's interests in
cellular markets at December 31, 1999.

<TABLE>
<S> <C>
Owns Majority Interest and Manages (consolidated)........... 139
Owns Minority Interest and Manages.......................... 6
----
Total Markets Managed by TDS................................ 145
Markets Managed by Others (1)............................... 35
----
Total Markets............................................... 180
====
</TABLE>

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(1) Represents markets in which U.S. Cellular owns a minority or other
noncontrolling interest and which are managed by third parties; as of
December 31, 1999, U.S. Cellular accounted for its interests in 29 of these
markets using the equity method and accounted for the remaining six markets
using the cost method.

Cellular systems in U.S. Cellular's 139 majority-owned and managed markets
served 2,602,000 customers at December 31, 1999, and contained 2,300 cell sites.
The average penetration rate in U.S. Cellular's consolidated markets was 10.39%
at December 31, 1999, and the churn rate in all consolidated markets averaged
2.1% per month for the twelve months ended December 31, 1999.

THE CELLULAR TELEPHONE INDUSTRY

Cellular telephone technology provides high-quality, high-capacity
communications services to in-vehicle and hand-held portable cellular
telephones. Cellular technology is a major improvement over earlier mobile
telephone technologies. Cellular telephone systems are designed for maximum
mobility of the customer. Access is provided through system interconnections to
local, regional, national and world-wide telecommunications networks. Cellular
telephone systems also offer a full range of ancillary services such as
conference calling, call-waiting, call-forwarding, voice mail, Internet access,
facsimile and data transmission.

Cellular telephone systems divide each service area into smaller geographic
areas or "cells." Each cell is served by radio transmitters and receivers
operating on discrete radio frequencies licensed by the FCC. All of the cells in
a system are connected to a computer-controlled Mobile Telephone Switching
Office ("MTSO"). The MTSO is connected to the conventional "landline" telephone
network and potentially other MTSOs. Each conversation on a cellular phone
involves a transmission over a specific set of radio frequencies from the
cellular phone to a transmitter/receiver at a cell site. The transmission is
forwarded from the cell site to the MTSO and from there may be forwarded to the
landline telephone network to complete the call. As the cellular telephone moves
from one cell to another, the MTSO determines radio signal strength and
transfers ("hands off") the call from one cell to the next. This hand-off is not
noticeable to either party on the phone call.

The FCC currently grants only two licenses to provide cellular telephone
service in each market. However, competition for customers includes competing
communications technologies such as conventional landline and mobile telephone,
Specialized Mobile Radio ("SMR") systems, radio paging and PCS. PCS has become
available in many areas of the United States, including the majority of
U.S. Cellular's markets, and U.S. Cellular expects PCS operators to continue
deployment of PCS in portions of all of U.S. Cellular's clusters through 2000.
Additionally, technologies such as Enhanced Specialized Mobile Radio ("ESMR")
are proving to be competitive with cellular service in certain of
U.S. Cellular's markets.

The services available to cellular customers and the sources of revenue
available to cellular system operators are similar to those provided by
conventional landline telephone companies. Customers may be charged a separate
fee for system access, airtime, long-distance calls and ancillary services.
Cellular system operators often provide service to customers of other operators'
cellular systems while the customers are temporarily located within the
operators' service areas. Customers using service away from their home system
are called "roamers." Roaming is available because technical standards require
that analog cellular telephones be compatible in all market areas in the United
States. Additionally, because U.S. Cellular has deployed digital technologies in
many of its service areas, its customers with digital or dual-mode (both analog
and digital capabilities) wireless telephones can roam in other

7
companies' service areas which have a compatible digital technology in place.
Likewise, in its service areas with digital technologies in place,
U.S. Cellular can provide roaming service to other companies' customers who have
compatible digital wireless telephones. This type of roaming is not limited to
cellular customers and systems; PCS customers and systems have this roaming
capability as well. In all cases, the system that provides the service to
roamers will generate usage revenue. Many operators, including U.S. Cellular,
charge premium rates for this roaming service.

There have been a number of technical developments in the cellular industry
since its inception. Currently, while most companies' MTSOs process information
digitally, on certain cellular systems the radio transmission is done on an
analog basis. Several years ago, certain digital transmission techniques were
approved for implementation by the cellular industry. Time Division Multiple
Access ("TDMA") technology was selected as one industry standard by the cellular
industry and has been deployed by many wireless operators, including
U.S. Cellular's operations in portions of several clusters. Another digital
technology, Code Division Multiple Access ("CDMA"), is also being deployed by
U.S. Cellular in portions of several clusters. Digital radio technology offers
several advantages, including greater privacy, less transmission noise, greater
system capacity and potentially lower incremental costs to accommodate
additional system usage. The conversion from analog to digital radio technology
is continuing on an industry-wide basis; however, this process is expected to
take a number of years. PCS operators have deployed TDMA, CDMA and a third
digital technology, Global System for Mobile Communication ("GSM"), in the
markets where they have begun operations.

The cellular telephone industry is characterized by high initial fixed
costs. Accordingly, if and when revenues less variable costs exceed fixed costs,
incremental revenues should yield an operating profit. The amount of profit, if
any, under such circumstances is dependent on, among other things, prices and
variable marketing costs which in turn are affected by the amount and extent of
competition. Until technological limitations on total capacity are approached,
additional cellular system capacity can normally be added in increments that
closely match demand and at less than the proportionate cost of the initial
capacity.

CELLULAR OPERATIONS

From its inception in 1983 until 1993, U.S. Cellular was principally in a
start-up phase. Until 1993, U.S. Cellular's activities were concentrated
significantly on the acquisition of interests in cellular licensees and on the
construction and initial operation of cellular systems. The development of a
cellular system is capital-intensive and requires substantial investment prior
to and subsequent to initial operation. U.S. Cellular experienced operating
losses and net losses from its inception until 1993. In years since 1993,
U.S. Cellular has generated operations-driven net income and has significantly
increased its operating cash flows. Management anticipates further growth in
cellular units in service and revenues as U.S. Cellular continues to expand
through internal growth. Marketing and system operations expenses associated
with this expansion may reduce the rate of growth in operating cash flows and
operating income during the period of additional growth. In addition,
U.S. Cellular anticipates that the seasonality of revenue streams and operating
expenses may cause U.S. Cellular's operating income to vary from quarter to
quarter.

While U.S. Cellular produced operating income and net income since 1993,
changes in any of several factors may reduce U.S Cellular's growth in operating
income and net income over the next few years. These factors include:

- the growth rate in U.S. Cellular's customer base;

- the usage and pricing of cellular services;

- the churn rate;

- the cost of providing cellular services, including the cost of attracting
new customers;

- continued competition from PCS and other technologies; and

- continuing technological advances which may provide additional competitive
alternatives to cellular service.

8
U.S. Cellular is building a substantial presence in selected geographic
areas throughout the United States where it can efficiently integrate and manage
cellular telephone systems. Its cellular interests include regional market
clusters in the following areas:

Midwest Regional Market Cluster

- Western Wisconsin/Northern Illinois

- Eastern Wisconsin

- Missouri/Illinois/Indiana

- Eastern Iowa

- Western Iowa

Mid-Atlantic Regional Market Cluster

- Eastern North Carolina/South Carolina

- Virginia/North Carolina

- West Virginia/Maryland/Pennsylvania/Ohio

Northwest Regional Market Cluster

- Washington/Oregon/Idaho

- Oregon/California

Maine/New Hampshire/Vermont Market Cluster

Florida/Georgia Market Cluster

Texas/Oklahoma/Missouri/Kansas Regional Market Cluster

- Oklahoma/Missouri/Kansas

- Texas/Oklahoma

Eastern Tennessee/Western North Carolina Market Cluster

Southern Texas Market Cluster

See "U.S. Cellular's Cellular Interests." U.S. Cellular has acquired its
cellular interests through the wireline application process (16%), including
settlements and exchanges with other applicants, and through acquisitions (84%),
including acquisitions from TDS and third parties.

CELLULAR SYSTEMS DEVELOPMENT

ACQUISITIONS, DIVESTITURES AND EXCHANGES. U.S. Cellular assesses its
cellular holdings on an ongoing basis in order to maximize the benefits derived
from clustering its markets. Over the past few years, U.S. Cellular has
completed exchanges of controlling interests in its less strategic markets for
controlling interests in markets which better complement its clusters.
U.S. Cellular has also completed outright sales of other less strategic markets,
and has purchased controlling interests in markets which enhance its clusters.
As a result, U.S. Cellular has not substantially increased its population
equivalents during the past five years, but has shifted the balance of its
holdings between investment and operating interests so that currently over 90%
of U.S. Cellular's interests are in markets where it is the operator.

Recently, the pace of acquisitions, exchanges and divestitures has slowed as
industry-wide consolidation has reduced the number of markets available for
acquisition. U.S. Cellular may continue to make opportunistic acquisitions or
exchanges in markets that further strengthen its market clusters and in other
attractive markets. U.S. Cellular also seeks to acquire minority interests in
markets where it already owns the majority interest and/or operates the market.
There can be no assurance that U.S. Cellular, or TDS for the benefit of
U.S. Cellular, will be able to negotiate additional acquisitions or exchanges on
terms acceptable to it or that regulatory approvals, where required, will be
received. U.S. Cellular plans

9
to retain minority interests in certain cellular markets which it believes will
earn a favorable return on investment. Other minority interests may be exchanged
for interests in markets which enhance U.S. Cellular's market clusters or may be
sold for cash or other consideration. U.S. Cellular also continues to evaluate
the disposition of certain managed interests which are not essential to its
corporate development strategy.

COMPLETED ACQUISITIONS. During 1999, U.S. Cellular purchased a majority
interest in one market and several minority interests in markets in which it
currently owns a majority interest, representing approximately
245,000 population equivalents, for $31.5 million in cash.

COMPLETED DIVESTITURES. During 1999, U.S. Cellular sold a majority interest
in one market and several minority interests, representing approximately
612,000 population equivalents, for cash and receivables totaling
$59.7 million.

PENDING ACQUISITIONS AND DIVESTITURE. As of December 31, 1999,
U.S. Cellular had agreements pending to acquire a majority interest in one
market and a minority interest in another market in which it currently owns a
majority interest, representing an aggregate of 160,000 population equivalents,
in exchange for $24.0 million in cash and the issuance of approximately 28,000
U.S. Cellular Common Shares. Also at December 31, 1999, U.S. Cellular had an
agreement pending to divest a minority interest in one market, representing
114,000 population equivalents, for $22.5 million in cash. U.S. Cellular expects
all of the pending transactions to be completed in the first half of 2000.

TDS maintains a shelf registration of Common Shares and U.S. Cellular
maintains shelf registrations of Common Shares and Preferred Stock under the
Securities Act of 1933 for issuance specifically in connection with
acquisitions.

U.S. Cellular is a majority-owned subsidiary of TDS. At December 31, 1999,
TDS owned 80.7% of the combined total of the outstanding Common Shares and
Series A Common Shares of U.S. Cellular and controlled 95.6% of the combined
voting power of both classes of common stock.

CELLULAR INTERESTS AND CLUSTERS

U.S. Cellular operates clusters of adjacent cellular systems in nearly all
of its markets, enabling its customers to benefit from larger service areas than
otherwise possible. Where U.S. Cellular offers wide-area coverage, its customers
enjoy uninterrupted service within the designated area. Customers may also make
outgoing calls and receive incoming calls within this area without special
roaming arrangements. In addition to benefits to customers, clustering also has
provided to U.S. Cellular certain economies in its capital and operating costs.
These economies are made possible through increased sharing of facilities,
personnel and other costs and have resulted in a reduction of U.S. Cellular's
per customer cost of service. The extent to which U.S. Cellular benefits from
these revenue enhancements and economies of operation is dependent on market
conditions, population size of each cluster and engineering considerations.

U.S. Cellular may continue to make opportunistic acquisitions and exchanges
which will complement its established market clusters. From time to time,
U.S. Cellular may also consider exchanging or selling its interests in markets
which do not fit well with its long-term strategies.

U.S. Cellular owned interests in cellular telephone systems in 180 markets
at December 31, 1999, representing 26,395,000 million population equivalents.
Including the interest to be purchased and the

10
interest to be sold during 2000, U.S. Cellular owned or had the right to acquire
180 markets, representing 26,362,000 million population equivalents, at
December 31, 1999. The following table summarizes the changes in
U.S. Cellular's population equivalents in recent years.

<TABLE>
<CAPTION>
DECEMBER 31,
----------------------------------------------------
1999 1998 1997 1996 1995
-------- -------- -------- -------- --------
(THOUSANDS OF POPULATION EQUIVALENTS)(1)
<S> <C> <C> <C> <C> <C>
Operational Markets:
Majority-Owned and Managed...................... 24,079 23,825 23,051 20,625 20,325
Minority-Owned and Managed (2).................. 306 358 405 405 516
Majority-Owned Markets to be Managed, Net of
Markets to be Divested: (2)(3).................. -- -- -- 221 274
------ ------ ------ ------ ------
Total Markets Managed and to be Managed....... 24,385 24,183 23,456 21,251 21,115
Minority Interests in Markets Managed by Others... 1,977 2,166 2,163 4,614 4,115
------ ------ ------ ------ ------
Total......................................... 26,362 26,349 25,619 25,865 25,230
====== ====== ====== ====== ======
</TABLE>

- ------------------------------

(1) Based on 1999 Claritas estimates for all years.

(2) Includes markets where U.S. Cellular has the right to acquire an interest
but does not currently own an interest.

(3) Includes markets which are operational but which are currently managed by
third parties.

The following section details U.S. Cellular's cellular interests, including
those it owned or had the right to acquire as of December 31, 1999. The table
presented therein lists clusters of markets that U.S. Cellular manages.
U.S. Cellular's market clusters show the areas in which U.S. Cellular is
currently focusing its development efforts. These clusters have been devised
with a long-term goal of allowing delivery of cellular service to areas of
economic interest and along corridors of economic activity. The number of
population equivalents represented by U.S. Cellular's cellular interests may
have no direct relationship to the number of potential cellular customers or the
revenues that may be realized from the operation of the related cellular
systems.

11
U.S. CELLULAR'S CELLULAR INTERESTS

The table below sets forth certain information with respect to the interests
in cellular markets which U.S. Cellular owned or had the right to acquire
pursuant to definitive agreements as of December 31, 1999.

<TABLE>
<CAPTION>
TOTAL CURRENT AND
ACQUIRABLE
POPULATION
CLUSTER/MAJOR SERVICE AREA 1999 POPULATION EQUIVALENTS
-------------------------- --------------- -----------------
<S> <C> <C>
MIDWEST REGIONAL MARKET CLUSTER:
Western Wisconsin/Northern Illinois....................... 2,627,000 2,583,000
Eastern Wisconsin......................................... 2,291,000 2,268,000
Missouri/Illinois/Indiana................................. 1,943,000 1,834,000
Eastern Iowa.............................................. 1,785,000 1,622,000
Western Iowa.............................................. 956,000 903,000
---------- ----------
Total Midwest Regional Market Cluster................... 9,602,000 9,210,000
---------- ----------

MID-ATLANTIC REGIONAL MARKET CLUSTER:
Eastern North Carolina/South Carolina..................... 2,637,000 2,626,000
Virginia/North Carolina................................... 1,322,000 1,315,000
West Virginia/Maryland/Pennsylvania/Ohio.................. 1,383,000 1,255,000
---------- ----------
Total Mid-Atlantic Regional Market Cluster.............. 5,342,000 5,196,000
---------- ----------

NORTHWEST REGIONAL MARKET CLUSTER:
Washington/Oregon/Idaho................................... 1,500,000 1,400,000
Oregon/California......................................... 1,053,000 1,053,000
---------- ----------
Total Northwest Regional Market Cluster................. 2,553,000 2,453,000
---------- ----------

MAINE/NEW HAMPSHIRE/VERMONT MARKET CLUSTER:................. 1,697,000 1,643,000
---------- ----------

FLORIDA/GEORGIA MARKET CLUSTER:............................. 1,597,000 1,597,000
---------- ----------

TEXAS/OKLAHOMA/MISSOURI/KANSAS REGIONAL MARKET CLUSTER:
Oklahoma/Missouri/Kansas.................................. 1,451,000 896,000
Texas/Oklahoma............................................ 691,000 604,000
---------- ----------
Total Texas/Oklahoma/Missouri/Kansas Regional Market
Cluster:............................................... 2,142,000 1,500,000
---------- ----------

EASTERN TENNESSEE/WESTERN NORTH CAROLINA MARKET CLUSTER:.... 1,653,000 1,331,000
---------- ----------

SOUTHERN TEXAS MARKET CLUSTER:.............................. 1,311,000 1,311,000
---------- ----------
Other Operations:........................................... 144,000 144,000
---------- ----------
Total Managed Markets....................................... 26,041,000 24,385,000
Markets Managed by Others................................... 1,977,000
----------
Total Population Equivalents................................ 26,362,000
==========
</TABLE>

SYSTEM DESIGN AND CONSTRUCTION

U.S. Cellular designs and constructs its systems in a manner it believes
will permit it to provide high-quality service to analog and certain types of
digital cellular telephones, based on market and engineering studies which
relate to specific markets. Engineering studies are performed by U.S. Cellular
personnel or independent engineering firms. U.S. Cellular's switching equipment
is digital, which reduces noise and crosstalk and is capable of interconnecting
in a manner which reduces costs of operation. While digital microwave
interconnections are typically made between the MTSO and cell

12
sites, both analog and digital radio transmissions are made between cell sites
and the cellular telephones themselves. Network reliability is given careful
consideration and extensive redundancy is employed in virtually all aspects of
U.S. Cellular's network design. Route diversity, ring topology and extensive use
of emergency standby power are also utilized to enhance network reliability and
minimize service disruption from any particular network failure.

In accordance with its strategy of building and strengthening market
clusters, U.S. Cellular has selected high capacity digital cellular switching
systems that are capable of serving multiple markets through a single MTSO. U.S.
Cellular's cellular systems are designed to facilitate the installation of
equipment which will permit microwave interconnection between the MTSO and the
cell site. U.S. Cellular has implemented such microwave interconnection in most
of the cellular systems it manages. Otherwise, such systems will rely upon
landline telephone connections to link cell sites with the MTSO. Although the
installation of microwave network interconnection equipment requires a greater
initial capital investment, a microwave network enables a system operator to
avoid the current and future charges associated with leasing telephone lines
from the landline telephone company, while generally improving system
reliability. In addition, microwave facilities can be used to connect separate
cellular systems to allow shared switching, which reduces the aggregate cost of
the equipment necessary to operate multiple systems. Microwave facilities can
also be used to carry long-distance calls, which reduces the costs of
interconnecting to the landline network.

U.S. Cellular has continued to expand its Wide Area Network ("WAN") to
accommodate various business functions, including:

- automatic call delivery

- intersystem handoff

- credit validation

- fraud prevention

- network management and

- interconnectivity of all U.S. Cellular's MTSOs and cell sites.

In addition, the WAN accommodates virtually all internal data communications
between various U.S. Cellular office locations and a significant number of U.S.
Cellular's retail locations to process customer activations. The WAN is deployed
in U.S. Cellular's five regional customer service centers ("Communications
Centers") for all customer service functions using U.S. Cellular's new billing
and information system.

Management believes that currently available technologies will allow
sufficient capacity on U.S. Cellular's networks to meet anticipated demand over
the next few years.

COSTS OF SYSTEM CONSTRUCTION AND FINANCING

Construction of cellular systems is capital-intensive, requiring substantial
investment for land and improvements, buildings, towers, MTSOs, cell site
equipment, microwave equipment, engineering and installation. U.S. Cellular,
consistent with FCC control requirements, uses primarily its own personnel to
engineer and oversee construction of each cellular system it owns and operates.

The costs (exclusive of license costs) of the systems in which U.S. Cellular
owns an interest have historically been financed through capital contributions
or intercompany loans from U.S. Cellular to the entities owning the systems, and
through certain vendor financing. In recent years, these funding requirements
have been met with cash generated from operations, proceeds from debt offerings
and proceeds from the sales of cellular interests.

MARKETING

U.S. Cellular's marketing plan is centered around rapid penetration of its
market clusters, increasing customer awareness of cellular service and reducing
churn. U.S. Cellular achieves these results through

13
the building of brand awareness and the implementation of loyalty programs which
give customer service priority to U.S. Cellular's most valuable customers. The
marketing plan stresses the value of U.S. Cellular's service offerings and
incorporates combinations of rate plans and cellular telephone equipment which
are designed to meet the needs of defined customer segments and their usage
patterns. U.S. Cellular supports a multi-faceted distribution program, including
direct sales, agents and retail service centers in the vast majority of its
markets, and the Internet for those customers who wish to contact U.S. Cellular
through that medium.

U.S. Cellular-owned and managed locations are designed to market cellular
service to the consumer segment in a familiar setting. In late 1999, U.S.
Cellular expanded its e-commerce site to make additional accessories available
online. U.S. Cellular anticipates that as customers become more comfortable with
e-commerce, the Internet will become more of a robust marketing channel for both
sales of rate plans as well as accessories.

U.S. Cellular manages each cluster of markets with a local staff, including
sales, engineering and in some cases installation personnel. U.S. Cellular
operates five regional Communications Centers whose personnel are responsible
for customer service and certain other functions. Direct sales consultants
market cellular service to business customers throughout each cluster. Retail
sales associates work out of U.S. Cellular's nearly 500 U.S. Cellular-owned
retail stores and kiosks and market cellular service primarily to the consumer
and small business segment. U.S. Cellular maintains an ongoing training program
to improve the effectiveness of sales consultants and retail associates by
focusing their efforts on obtaining customers and maximizing the sale of
high-use packages. These packages enable customers to buy substantial amounts of
minutes for fixed monthly rates.

U.S. Cellular continues to expand its relationships with agents, dealers and
non-U.S. Cellular retailers to obtain customers, and at year-end 1999 had
contracts with more than 2,000 of these businesses. Agents and dealers are
independent business people who obtain customers for U.S. Cellular on a
commission basis. U.S. Cellular's agents are generally in the business of
selling cellular telephones, cellular service packages and other related
products. U.S. Cellular's dealers include car stereo companies, major appliance
dealers, office supply dealers and mass merchants including national companies
such as Best Buy and Circuit City.

U.S. Cellular created a new class of agent during 1999, the Value Added
Distributor agent channel. This channel's initial focus was on the sale of U.S.
Cellular's prepaid service product, TalkTracker-Registered Trademark-, to
selected market segments, and complements U.S. Cellular's own distribution
channels. Additionally, in support of its overall Internet initiatives, U.S.
Cellular has actively recruited agents who provide services exclusively through
the Internet. Such agents include Sundial, Telstreet, StartSmart and
Buyphone.com.

U.S. Cellular uses a variety of direct mail, billboard, radio, television
and newspaper advertising to stimulate interest by prospective customers in
purchasing U.S. Cellular's cellular service and to establish familiarity with
U.S. Cellular's name. In 1999, U.S. Cellular began operating under a unified
brand name and logo, U.S. Cellular( SM), across all its markets. All markets
were converted to the new brand name in the second quarter of 1999. The new logo
is simpler and bolder than the old logo. U.S. Cellular retained its tag line
"The way people talk around here( SM)," which is still used to promote the U.S.
Cellular( SM) brand.

U.S. Cellular continues to advertise its digital service offerings through
both television and radio advertising, which contributed to a significant
increase in the number of customers using U.S. Cellular's digital services
during 1999. Advertising is directed at gaining customers, improving customers'
awareness of the U.S. Cellular brand, increasing existing customers' usage of
U.S. Cellular's services and increasing the public awareness and understanding
of the cellular services offered by U.S. Cellular. U.S. Cellular attempts to
select the advertising and promotion media that are most appealing to the
targeted groups of potential customers in each local market. U.S. Cellular
utilizes local advertising media and public relations activities and establishes
community relations programs to enhance public awareness of U.S. Cellular. These
programs are aimed at supporting the communities in which U.S. Cellular serves.
The programs range from loaning phones to public service operations in
emergencies to assisting victims of domestic abuse through U.S. Cellular's Stop
Abuse From Existing(SM) programs.

14
The following table summarizes, by operating cluster, the total population,
U.S. Cellular's customer units and penetration for U.S. Cellular's
majority-owned and managed markets that were operational as of December 31,
1999.

<TABLE>
<CAPTION>
OPERATING CLUSTERS POPULATION CUSTOMERS PENETRATION
------------------ ---------- --------- -----------
<S> <C> <C> <C>
Midwest Regional Market Cluster.......................... 9,209,000 1,140,000 12.38%

Mid-Atlantic Regional Market Cluster..................... 5,091,000 415,000 8.15

Northwest Regional Market Cluster........................ 2,553,000 254,000 9.95

Maine/New Hampshire/Vermont Market Cluster............... 1,697,000 165,000 9.72

Florida/Georgia Market Cluster........................... 1,597,000 151,000 9.46

Texas/Oklahoma/Missouri/Kansas Regional Market Cluster... 2,142,000 226,000 10.55

Eastern Tennessee/Western North Carolina Market
Cluster................................................ 1,300,000 152,000 11.69

Southern Texas Market Cluster............................ 1,311,000 77,000 5.87

Other Operations......................................... 144,000 22,000 15.28
---------- --------- -----

25,044,000 2,602,000 10.39%
========== ========= =====
</TABLE>

CUSTOMERS AND SYSTEM USAGE

Cellular customers come from a wide range of demographic segments. Business
users typically include a large proportion of individuals who work outside of
their offices such as people in the construction, real estate, wholesale and
retail distribution businesses and professionals. Increasingly, U.S. Cellular is
providing cellular service to consumers and to customers who use their cellular
telephones for mixed business and personal use as well as for security purposes.
A major portion of U.S. Cellular's recent customer growth is from these lower
revenue segments. Although some of U.S. Cellular's customers still use
in-vehicle cellular telephones, the vast majority of new customers are selecting
portable cellular telephones. These units are more compact and fully featured as
well as more attractively priced, and they appeal to newer segments of the
customer population.

U.S. Cellular's cellular systems are used most extensively during normal
business hours between 7:00 AM and 6:00 PM. On average, the local retail
customers in U.S. Cellular's consolidated markets used their cellular systems
approximately 115 minutes per unit each month and generated retail revenue of
approximately $33 per month during 1999, compared to 105 minutes and $33 per
month in 1998. Revenue generated by roamers using U.S. Cellular's systems
("inbound roaming"), together with local retail, toll and other revenues,
brought U.S. Cellular's total average monthly service revenue per customer unit
in consolidated markets to $48 during 1999. Average monthly service revenue per
customer unit decreased approximately 1% during 1999. This decrease was not as
significant as in recent years, due to the proliferation of certain national
pricing plans used by other wireless companies which significantly increased
inbound roaming minutes of use on U.S. Cellular's systems during 1999. This
effect was offset by decreases in average revenue per minute of use from both
local retail customers and inbound roamers. Competitive pressures and U.S.
Cellular's increasing use of pricing and other incentive programs to stimulate
overall usage resulted in a decrease in average local retail revenue per minute
of use in 1999. Inbound roaming revenue per minute also decreased during the
year, partially due to the ongoing trend toward reduced per minute prices for
roaming negotiated between U.S. Cellular and other cellular operators and also
due to the additional minutes generated by customers with national pricing
plans, which are at lower than average rates. U.S. Cellular anticipates that
average monthly service revenue per customer unit will continue to decline in
the future. However, this effect is more than offset by U.S. Cellular's
increasing number of customers; therefore, U.S. Cellular expects total revenues
to continue to grow for the next few years.

U.S. Cellular's main sources of revenue are from its own customers and from
inbound roaming customers. U.S. Cellular's roaming service allows a customer to
place or receive a call in a cellular service area away from the customer's home
service area. U.S. Cellular has entered into "roaming

15
agreements" with operators of other cellular systems covering virtually all
systems in the United States, Canada, and Mexico. U.S. Cellular also has roaming
agreements with several PCS operators. Roaming agreements offer customers the
opportunity to roam in these systems. These reciprocal agreements automatically
pre-register the customers of U.S. Cellular's systems in the other carriers'
systems. Also, a customer of a participating system roaming (i.e. traveling) in
a U.S. Cellular market where this arrangement is in effect is able to make and
receive calls on U.S. Cellular's system. The charge for this service is
typically at premium rates and is billed by U.S. Cellular to the customer's home
system, which then bills the customer. U.S. Cellular has entered into agreements
with other cellular carriers to transfer roaming usage at agreed-upon rates. In
some instances, based on competitive factors, U.S. Cellular may charge a lower
amount to its customers than the amount actually charged to U.S. Cellular by
another cellular carrier for roaming.

The following table summarizes certain information about customers and
market penetration in U.S. Cellular's consolidated operations.

<TABLE>
<CAPTION>
YEAR ENDED OR AT DECEMBER 31,
--------------------------------------------------------------
1999 1998 1997 1996 1995
---------- ---------- ---------- ---------- ----------
(DOLLARS IN THOUSANDS)
<S> <C> <C> <C> <C> <C>
Majority-owned and managed markets:
Cellular markets in operation (1)............... 139 138 134 131 137
Total population of markets in service (000s)... 25,044 24,683 24,034 21,712 22,309
Customer Units: (2)
at beginning of period........................ 2,183,000 1,710,000 1,073,000 710,000 421,000
additions during period....................... 1,015,000 915,000 941,000 561,000 426,000
disconnects during period..................... 596,000 442,000 304,000 198,000 137,000
at end of period.............................. 2,602,000 2,183,000 1,710,000 1,073,000 710,000
Market penetration at end of period (3)......... 10.39% 8.84% 7.11% 4.94% 3.18%
Consolidated revenues............................. $1,417,181 $1,162,467 $ 876,965 $ 680,068 $ 480,316
Depreciation expense.............................. 184,830 167,150 97,591 74,631 57,302
Amortization expense.............................. 45,142 39,629 34,788 34,208 32,156
Operating Income.................................. 255,842 176,075 129,543 87,366 42,755
Capital expenditures.............................. 277,450 320,417 318,748 248,123 210,878
Business segment assets........................... $3,331,590 $3,011,237 $2,508,916 $2,071,522 $1,876,262
</TABLE>

- ------------------------------

(1) Represents the number of markets in which U.S. Cellular owned at least a 50%
interest and which it managed. The revenues and expenses of these cellular
markets are included in U.S. Cellular's consolidated revenues and expenses.

(2) Represents the approximate number of revenue-generating cellular telephones
served by the cellular markets referred to in footnote (1). The revenue
generated by such cellular telephones is included in consolidated revenues.

(3) Computed by dividing the number of customer units at the end of the period
by the total population of markets in service as estimated by Claritas
(1997-1999) or Donnelley Marketing Service (1995-1996) for the respective
years.

PRODUCTS AND SERVICES

CELLULAR TELEPHONES AND INSTALLATION. There are a number of different types
of cellular telephones, all of which are currently compatible with analog
cellular systems nationwide. U.S. Cellular offers a full range of cellular
telephones for use by its customers. Features offered in some of the cellular
telephones include hands-free calling, repeat dialing, voice mail and others. In
the systems where U.S. Cellular offers digital service, additional features such
as caller ID and short messaging services are available on those cellular
telephones.

U.S. Cellular negotiates volume discounts from its cellular telephone
suppliers. U.S. Cellular's discounts cellular telephones to meet competition or
to stimulate sales by reducing the cost of becoming a cellular customer. In
these instances, where permitted by law, customers are generally required to
sign a service contract with U.S. Cellular. U.S. Cellular also cooperates with
cellular equipment manufacturers in local advertising and promotion of cellular
equipment.

U.S. Cellular has established service and/or installation facilities in many
of its local markets to ensure quality installation and service of the cellular
telephones it sells. These facilities allow U.S.

16
Cellular to improve its service by promptly assisting customers who experience
equipment problems. Additionally, U.S. Cellular maintains a repair facility in
Tulsa, Oklahoma, which handles more complex service and repair issues.

CELLULAR SERVICES. U.S. Cellular's customers are able to choose from a
variety of packaged pricing plans which are designed to fit different calling
patterns. The ability to help a customer find the right technology and the right
pricing plan is central to U.S. Cellular's brand positioning. During 1999, U.S.
Cellular focused its efforts on new products with the continued promotion of its
digital service offering, called Digital PCS, and its prepaid offering,
TalkTracker-Registered Trademark-. Both offerings continued their success during
the year, as many higher revenue customers purchased U.S. Cellular's digital
offering and new market segments such as individuals with credit difficulties
were able to purchase cellular service through U.S. Cellular's prepaid offering.

U.S. Cellular's customer bills typically show separate charges for
custom-calling features, airtime in excess of the packaged amount, and toll
calls. Custom-calling features provided by U.S. Cellular include wide-area call
delivery, call forwarding, call waiting, three-way calling and no-answer
transfer. U.S. Cellular also offers a voice message service in many of its
markets. This service, which functions like a sophisticated answering machine,
allows customers to receive messages from callers when they are not available to
take calls. Additional services, such as short messaging services, are available
in U.S. Cellular's markets where digital service is offered.

REGULATION

REGULATORY ENVIRONMENT. The operations of U.S. Cellular are subject to FCC
and state regulation. The cellular telephone licenses held by U.S. Cellular are
granted by the FCC for the use of radio frequencies and are an important
component of the overall value of the assets of U.S. Cellular. The construction,
operation and transfer of cellular systems in the United States are regulated to
varying degrees by the FCC pursuant to the Communications Act of 1934. In 1996,
Congress enacted the Telecommunications Act of 1996, which amended the
Communications Act. The Telecommunications Act mandates significant changes in
existing telecommunications rules and policies to promote competition, ensure
the availability of telecommunications services to all parts of the nation and
to streamline regulation of the telecommunications industry to remove regulatory
burdens, as competition develops. The FCC has promulgated regulations governing
construction and operation of cellular systems, licensing (including renewal of
licenses) and technical standards for the provision of cellular telephone
service under the Communications Act, and is implementing the legislative
objectives of the Telecommunications Act, as discussed below.

LICENSING. For cellular telephone licensing purposes, the FCC has divided
the United States into separate geographic markets (MSAs and RSAs). In each
market, the allocated cellular frequencies are divided into two equal blocks.
During the application process, the FCC reserved one block of frequencies for
non-wireline applicants and another block for wireline applicants. Subject to
FCC approval, a cellular system may be sold to either a wireline or non-wireline
entity, but no entity which controls a cellular system may own a significant
interest in another cellular system in the same MSA or RSA.

The completion of acquisitions involving the transfer of control of a
cellular system requires prior FCC approval. Acquisitions of minority interests
generally do not require FCC approval. Whenever FCC approval is required, any
interested party may file a petition to dismiss or deny the application for
approval of the proposed transfer.

The FCC must be notified each time an additional cell is constructed which
enlarges the service area of a given market. The FCC's rules also generally
require persons or entities holding cellular construction permits or licenses to
coordinate their proposed frequency usage with neighboring cellular licensees in
order to avoid electrical interference between adjacent systems. The height and
power of base stations in the cellular system are regulated by FCC rules, as are
the types of signals emitted by these stations. In addition to regulation by the
FCC, cellular systems are subject to certain Federal Aviation Administration
("FAA") regulations with respect to the siting and construction of cellular
transmitter towers and antennas as well as local zoning requirements.

17
Beginning in 1996, the FCC has also imposed a requirement that all licensees
register and obtain FCC registration numbers for all of their antenna towers
which require prior FAA clearance. All new towers must be registered at the time
of construction and existing towers were required to be registered by May 1998
on a staggered state-by-state basis. U.S. Cellular believes that it is in
compliance with the FCC's tower registration requirements.

Beginning in October 1997, cellular systems, which previously were
"categorically excluded" from having to evaluate their facilities to ensure
their compliance with federal "radio frequency" radiation requirements, were
made subject to those requirements. As a result, all cellular towers of less
than 10 meters in height, building mounted antennas and cellular telephones must
comply with radio frequency radiation guidelines. After October 1997, all new
cellular facilities must be in compliance when they are brought into service. As
of September 1, 2000, all existing facilities must be brought into compliance.
U.S. Cellular believes that the majority of its existing facilities already
comply with the requirements and will seek to ensure that the remainder are
brought into compliance as required.

Initial cellular telephone licenses were granted for ten-year periods. The
FCC has established standards for conducting comparative renewal proceedings
between a cellular licensee seeking renewal of its license and challengers
filing competing applications. The FCC has: (i) established criteria for
comparing the renewal applicant to challengers, including the standards under
which a renewal expectancy will be granted to the applicant seeking license
renewal; (ii) established basic qualifications standards for challengers; and
(iii) provided procedures for preventing possible abuses in the comparative
renewal process. The FCC has concluded that it will award a renewal expectancy
if the licensee has (i) provided "substantial" performance, which is defined as
"sound, favorable and substantially above a level of mediocre service just
minimally justifying renewal," and (ii) complied with FCC rules, policies and
the Communications Act. If a renewal expectancy is awarded to an existing
licensee, its license is renewed and competing applications are not considered.
All of U.S. Cellular's licenses which it applied to have renewed between 1995
and 1999 were renewed.

U.S. Cellular conducts and plans to conduct its operations in accordance
with all relevant FCC rules and regulations and anticipates being able to
qualify for a renewal expectancy in its upcoming renewal filings. Accordingly,
U.S. Cellular believes that current regulations will have no significant effect
on its operations and financial condition. However, changes in the regulation of
cellular operators or their activities and of other mobile service providers
could have a material adverse effect on U.S. Cellular's operations.

The FCC has also provided that five years after the initial licenses are
granted, unserved areas within markets previously granted to licensees may be
applied for by both wireline and non-wireline entities and by third parties.
Accordingly, many unserved area applications have been filed by U.S. Cellular
and others and have generally been routinely granted. U.S. Cellular's strategy
with respect to system construction in its markets has been to build cells
covering areas within such markets that U.S. Cellular considers economically
feasible to serve or might conceivably wish to serve and to do so within the
five-year period following issuance of the license. In cases where applications
for unserved areas are filed which are mutually exclusive and would result in
overlapping service areas, the FCC decides between the competing applicants by
an auction process.

Pursuant to 1993 amendments to the Communications Act, cellular service is
classified as a Commercial Mobile Radio Service, in that it is service offered
to the public, for a fee, which is interconnected to the public switched
telephone network. The FCC has determined that it will forbear from requiring
such carriers to comply with a number of statutory provisions otherwise
applicable to common carriers, such as the filing of tariffs.

RECENT EVENTS. There are certain regulatory proceedings currently pending
before the FCC which are of particular importance to the cellular industry. In
one proceeding, the FCC has imposed new "enhanced 911" regulations on cellular
carriers. Enhanced 911 capabilities will enable cellular systems to determine
the precise location of persons making emergency calls. The new rules will
require cellular carriers to work with local public safety officials to process
911 calls, including those made from mobile

18
telephones not registered with the cellular system. Since April 1998, cellular
carriers have had to be able to identify the cell from which the call has been
made. The rules will require cellular systems to improve their ability to locate
wireless 911 callers during 2001 and 2002.

The FCC has adopted a limited expansion of the obligation of cellular
carriers to serve the roaming subscribers of broadband PCS providers, among
others, even though the subscribers involved have no pre-existing service
relationships with such cellular carriers. Under these policies, broadband PCS
providers may offer their subscribers handsets which are capable of operating
over broadband PCS and cellular networks so that when their subscribers are out
of range of broadband PCS networks, they will be able to obtain access to
cellular networks. The FCC expects that implementation of these roaming
capabilities will promote competition between broadband PCS and cellular service
providers.

The FCC has adopted requirements which will make it possible for subscribers
to retain, subject to certain geographic and other limitations, their existing
telephone numbers when they switch from one service provider to another. This
numbering portability will include switching between Local Exchange Carriers
("LECs") and other wireline providers, between wireless service providers and
between LEC/ wireline and wireless providers. LECs in the 100 largest MSAs, had
implementation deadlines by the end of 1998 at those switches which received
specific requests for numbering portability. The FCC has extended the compliance
date for cellular, broadband PCS, and certain other wireless providers until
November 2002.

In another proceeding, the FCC in 1996 adopted rules regarding the method by
which cellular carriers and LECs shall compensate each other for interconnecting
cellular and local exchange facilities. The FCC rules provided for symmetrical
and reciprocal compensation between LECs and cellular carriers, and also
prescribed interim interconnection proxy rates, which are much lower than the
rates that were formerly paid by cellular carriers to LECs. Symmetrical and
reciprocal compensation means they must pay each other at the same rate.
Interconnection rate issues will be decided by the states. Cellular carriers are
now paying and in the future can be expected to pay lower rates to LECs than
they previously paid. This result is expected to be favorable to the wireless
industry and somewhat unfavorable to LECs.

The FCC is also proceeding to implement other parts of the
Telecommunications Act. The Telecommunications Act provides that implementing
its legislative objectives will be the task of the FCC, the state public
utilities commissions and a Federal-state Joint Board. Much of this
implementation is proceeding in numerous, concurrent proceedings with aggressive
deadlines. U.S. Cellular cannot predict the full extent of, nature of and
interrelationships among state and federal implementation and other responses to
the Telecommunications Act.

The primary purpose and effect of the new law is to open all
telecommunications markets to competition. The Telecommunications Act makes most
direct or indirect state and local barriers to competition unlawful. It directs
the FCC to preempt all inconsistent state and local laws and regulations, after
notice and comment proceedings. It also enables electric and other utilities to
engage in telecommunications service through qualifying subsidiaries.

Only narrow powers over competitive entry are left to state and local
authorities. Each state retains the power to impose competitively neutral
requirements that are consistent with the Telecommunications Act's universal
service provisions and necessary for universal services, public safety and
welfare, continued service quality and consumer rights. While a state may not
impose requirements that effectively function as barriers to entry, it retains
limited authority to regulate certain competitive practices in rural telephone
company service areas.

The Telecommunications Act establishes principles and a process for
implementing a modified "universal service" policy. This policy seeks
nationwide, affordable service and access to advanced telecommunications and
information services. It calls for reasonably comparable urban and rural rates
and services. The Telecommunications Act also requires universal service to
schools, libraries and rural health facilities at discounted rates. Cellular
carriers must provide such discounted rates to such organizations in accordance
with federal regulations. The FCC has implemented the mandate of the
Telecommunications Act to create a new universal service support mechanism "to
ensure that all

19
Americans have access to telecommunications services." The Telecommunications
Act requires all interstate telecommunications providers, including wireless
service providers, to "make an equitable and non-discriminatory contribution" to
support the cost of providing universal service, unless their contribution would
be de minimis. At present, the provision of landline telephone service in high
cost areas is subsidized by access charges and other payments by interexchange
carriers to LECs. The obligation to make payments to support universal service
has been expanded to include other telecommunications service providers,
including cellular carriers. Such payments, based on a percentage of the total
"billed revenue" of carriers for a given previous half year, began in the first
quarter of 1998. Carriers are free to pass such charges on to their customers.
Cellular carriers are also eligible to receive universal service support
payments in certain circumstances under the new systems if they provide
specified services in "high cost" areas. U.S. Cellular has sought designation as
an "eligible telecommunications carrier" qualified to receive universal service
support in certain states and has been designated as such a carrier in
Washington State. It has also sought FCC clarification of the standards under
which wireless eligible telecommunications carriers will be designated.

Under a 1994 federal law, the Communications Assistance to Law Enforcement
Act, all telecommunications carriers, including U.S. Cellular and other wireless
licensees, must implement by June 30, 2000, certain equipment changes necessary
to assist law enforcement authorities in achieving an enhanced ability to
conduct electronic surveillance of those suspected of criminal activity. In
August 1999, the FCC added certain additional capabilities necessary to meet the
requirements of such act, which are to become applicable by September 2001.
Also, issues remain as to when carriers may obtain reimbursement from the
federal government for upgrades related to such requirements. U.S. Cellular will
work diligently to comply with all applicable requirements of the Communications
Assistance to Law Enforcement Act in cooperation with industry groups and
standard setting bodies.

The FCC has recently taken action in proceedings: (1) to ensure that the
customers of wireless providers, among other carriers, will receive complete,
accurate, and understandable bills; (2) to establish safeguards to protect
against unauthorized access to customer information, though these rules have
been overturned, at least temporarily, by court order; (3) to increase to 55
megahertz ("MHz") in rural areas its 45 MHz "cap" on the amount of spectrum
which entities under common ownership and control may hold in a single wireless
market and to relax its related cellular cross ownership restrictions; and
(4) to require improved access to telecommunications facilities by persons with
disabilities.

The FCC also has pending proceedings: (1) to implement a wireless billing
option under which wireline customers who call wireless customers could be
charged for wireless "airtime" as opposed to the wireless customer receiving the
call, as is the case at present ("calling party pays"); (2) to implement
requirements for wireless providers to set interstate interexchange rates in
each state at levels no higher than the rates charged to subscribers in any
other state; and (3) to set national policy for the allocation by state public
utilities commissions of telephone numbers to wireline and wireless carriers.

U.S. Cellular will monitor such proceedings and comply with new federal
requirements as they become applicable.

The FCC has also allocated a total of 140 MHz to broadband PCS (a portion of
radio spectrum from 1850 MHz to 1990 MHz), 20 MHz to unlicensed operations and
120 MHz to licensed operations, consisting of two 30 MHz blocks in each of the
51 Major Trading Areas ("MTAs") and one 30 MHz block and three 10 MHz blocks in
each of 493 Basic Trading Areas ("BTAs"). Cellular operators and those entities
under common ownership with them are permitted to participate in the ownership
of PCS licenses, except for those PCS licenses reserved for small businesses,
and licenses for PCS service areas in which the cellular operator owns a 20% or
greater interest in a cellular licensee, the service area of which covers 10% or
more of the population of the PCS service area. In the latter case, the cellular
license holder is limited to 20 MHz of PCS channels in urban areas. In rural
areas, such cellular operators may also now have 30 MHz of PCS channels.

PCS technology is similar in some respects to cellular technology. Where it
has become commercially available, this technology is capable of offering
increased capacity for wireless two-way and one-way voice, data and multimedia
communications services and has resulted in increased competition with U.S.
Cellular's operations in the markets where PCS systems have begun operations.
The

20
ability of these PCS licensees to complement or compete with existing cellular
licensees will be affected by future FCC rule-makings. These and other future
technological and regulatory developments in the wireless telecommunications
industry and the enhancement of current technologies will likely create new
products and services that are competitive with the services currently offered
by U.S. Cellular. U.S. Cellular could be adversely affected by such
technological and regulatory developments.

In January, 2000, the FCC took an action which may have an impact on both
cellular and PCS licensees. Pursuant to a congressional directive, the FCC
adopted service rules for licensing the commercial use of 30 MHz of spectrum in
the 746-764 MHz and 776-794 MHz spectrum bands. That spectrum is to be
auctioned, beginning in June 2000. The licenses are divided into six regional
service areas, with 20 and 10 MHz blocks, and are designed to allow for a wide
range of wireless services. There will be no eligibility restrictions on
participation in the auctions for this spectrum. Cellular and PCS carriers and
other entities will be eligible to bid in the auction. Use of the spectrum by
licensees selected in the auction may be affected by the presence of incumbent
broadcast licensees on some of the auctioned frequencies through at least
December 31, 2006.

STATE AND LOCAL REGULATION. U.S. Cellular is also subject to state and
local regulation in some instances. In 1981, the FCC preempted the states from
exercising jurisdiction in the areas of licensing, technical standards and
market structure. In 1993, Congress preempted states from regulating the entry
of cellular systems into service and the rates charged by cellular systems to
customers. The siting and construction of the cellular facilities, including
transmitter towers, antennas and equipment shelters are still subject to state
or local zoning and land use regulations. However, in 1996, Congress amended the
Communications Act to provide that states could not discriminate against
wireless carriers in tower zoning proceedings and had to decide on zoning
requests with reasonable speed. In addition, states may still regulate other
terms and conditions of cellular service.

The FCC is required to forbear from applying any statutory or regulatory
provision that is not necessary to keep telecommunications rates and terms
reasonable or to protect consumers. A state may not apply a statutory or
regulatory provision that the FCC decides to forbear from applying. In addition,
the FCC must review its telecommunications regulations every two years and
change any that are no longer necessary. Further, the FCC is empowered under
certain circumstances to preempt state regulatory authorities if a state is
obstructing the Communications Act's basic purposes.

U.S. Cellular and its subsidiaries have been and intend to remain active
participants in proceedings before the FCC and state regulatory authorities.
Proceedings with respect to the foregoing policy issues before the FCC and state
regulatory authorities could have a significant impact on the competitive market
structure among wireless providers and the relationships between wireless
providers and other carriers. U.S. Cellular is unable to predict the scope, pace
or financial impact of policy changes which could be adopted in these
proceedings.

COMPETITION

U.S. Cellular's principal competitor for cellular telephone service in each
market is the licensee of the second cellular system in that market. Since each
competitor operates its cellular system on a 25 MHz frequency block licensed by
the FCC using comparable technology and facilities, competition for customers
between the two systems in each market is principally on the basis of quality of
service, price, size of area covered, services offered, and responsiveness of
customer service. The competing entities in many of the markets in which U.S.
Cellular has an interest have financial resources which are substantially
greater than those of U.S. Cellular and its partners in such markets.

The FCC's rules require all operational cellular systems to provide, on a
nondiscriminatory basis, cellular service to resellers which purchase blocks of
mobile telephone numbers from an operational system and then resell them to the
public.

In addition to competition from the other cellular licensee in each market,
there is also competition from PCS providers and SMR/ESMR system providers, both
of which are able to connect with the landline telephone network. PCS providers
have initiated service in many markets across the United States, including
markets where U.S. Cellular has operations. PCS providers offer digital,
wireless

21
communications services to their customers. U.S. Cellular expects PCS operators
to continue deployment of PCS in portions of all of U.S. Cellular's clusters
throughout 2000. ESMR, an enhanced SMR system, has cells and frequency reuse
like other wireless services, thereby eliminating any technological limitation.
In recent years, ESMR providers have initiated service in several of U.S.
Cellular's markets. Although less directly a substitute for cellular service,
wireless data services and paging services may be adequate for those who do not
need full two-way voice service. Similar technological advances or regulatory
changes in the future may make available other alternatives to cellular service,
thereby creating additional sources of competition.

Continuing technological advances in the communications field make it
difficult to predict the extent of additional future competition for cellular
systems. For example, the FCC has allocated radio channels to mobile satellite
systems in which transmissions from mobile units to satellites would augment or
replace transmissions to cell sites, and several consortia to provide such
service have been formed. Such systems are designed primarily to serve the
communications needs of remote locations and mobile satellite systems could
provide viable competition for cellular systems in such areas. It is also
possible that the FCC may in the future assign additional frequencies to
cellular telephone service to provide for more than two cellular telephone
systems per market.

22
TELEPHONE OPERATIONS

OVERVIEW

TDS's telephone operations are conducted through TDS Telecom and its
subsidiaries. TDS Telecom is a full-service local exchange carrier providing
high-quality telecommunication services, including local and long-distance
telephone service and Internet access, to rural and suburban communities through
TDS Telecom's 104 telephone company subsidiaries and to small and midsized towns
and metropolitan areas through TDS Telecom's two CLEC subsidiaries. Each of the
104 telephone companies, ranging in size from approximately 500 to 64,000 access
lines, is an ILEC. An ILEC is an incumbent local telephone company that
traditionally had the exclusive right and responsibility to provide local
transmission and switching services in its designated service territory. TDS
Telecom served approximately 571,700 access lines through its ILEC subsidiaries
at December 31, 1999, in 28 states.

The table below sets forth, as of December 31, 1999, the nine largest states
of ILEC operations of TDS Telecom based on the number of access lines and the
total number of access lines operated by all of the telephone subsidiaries of
TDS Telecom.

<TABLE>
<CAPTION>
NUMBER OF ILEC ACCESS LINES AT
STATE DECEMBER 31, 1999 % OF TOTAL
- ----- ------------------------------ ----------
<S> <C> <C>
Tennessee............................................. 98,106 17.2%
Wisconsin............................................. 94,466 16.5
Georgia............................................... 45,262 7.9
Minnesota............................................. 33,076 5.8
Indiana............................................... 30,435 5.3
Alabama............................................... 27,332 4.8
Michigan.............................................. 25,359 4.4
Maine................................................. 24,980 4.4
New York.............................................. 23,602 4.1
------- -----

Total for 9 Largest States........................ 402,618 70.4
Other States.......................................... 169,082 29.6
------- -----

Total ILEC...................................... 571,700 100.0%
======= =====
</TABLE>

TDS Telecom provides consumers and businesses with landline local telephone
service through its switching and intra-city network. Long-distance or toll
service is provided through connections with long-distance carriers, primarily
AT&T and the Regional Bell Operating Companies ("RBOCs"), which purchase network
access from TDS Telecom.

In 1998, TDS Telecom began providing telecommunications services as a CLEC
in Madison, Appleton, Green Bay, Menasha and Neenah, Wisconsin under the TDS
METROCOM brand name and in Minnesota markets including Brainerd, Duluth and St.
Cloud under the USLink brand name. CLEC is a term which depicts companies that
enter the operating areas of ILECs to offer competing local exchange service and
other telephone services. In 1999, TDS METROCOM began providing service in
Oshkosh, Wisconsin. TDS Telecom served approximately 74,100 customers through
its CLEC subsidiaries at December 31, 1999.

Future growth in ILEC telephone operations is expected to be derived from
providing service to new or presently underserved establishments, from business
expansion in the areas served by TDS Telecom and others, from upgrading existing
customers to higher grades of service and increasing penetration of services,
from increased usage of the network through both local and long-distance
calling, from providing additional services made possible by advances in
technology and from the acquisition of additional telephone companies.

Future growth in CLEC telephone operations is expected to be derived from
expansion into new markets and continued penetration in markets currently
served.

23
TDS Telecom is committed to offering its customers a full complement of
telecommunications services, and is bundling those services in customer friendly
packages in order to be a single source for their telecommunications needs. TDS
Telecom intends to provide its customers with an ever-growing range of
communications products and services covering their local, long distance, data,
video and wireless needs.

The following table summarizes certain information regarding TDS Telecom's
telephone operations:

<TABLE>
<CAPTION>
YEAR ENDED OR AT DECEMBER 31,
--------------------------------------------------------------
1999 1998 1997 1996 1995
---------- ---------- ---------- ---------- ----------
(DOLLARS IN THOUSANDS)
<S> <C> <C> <C> <C> <C>
ILEC Access lines(1).......... 571,700 547,500 515,500 484,500 425,900
% Residential............... 77.9% 78.1% 78.3% 79.9% 80.6%
% Business
(nonresidential)........... 22.1% 21.9% 21.7% 20.1% 19.4%
CLEC Access lines(1).......... 74,100 34,100 -- -- --
Total Revenues................ $ 545,917 $ 488,104 $ 437,624 $ 395,059 $ 354,841
Operating cash flow........... 237,901 205,814 198,164 190,995 175,594
Depreciation and amortization
expense...................... $ 123,350 $ 111,402 $ 98,021 $ 88,346 $ 77,354
Operating income.............. 114,551 94,412 100,143 102,649 98,240
Construction expenditures..... 122,181 143,126 151,460 144,440 104,372
Business segment assets....... $1,472,556 $1,352,554 $1,244,174 $1,213,884 $1,074,439
</TABLE>

- ------------------------------

(1) An "access line" is a single or multi-party circuit between the customer's
establishment and the central switching office.

TDS Telecom is a wholly-owned business unit of TDS, founded in 1968. TDS
Telecom's corporate headquarters are located in Madison, Wisconsin.

BUSINESS STRATEGY

TDS Telecom has historically produced revenue growth in its ILEC markets by
providing its customers with state-of-the-art telecommunications solutions,
maintaining a high quality of on-going service and selectively acquiring local
telephone companies. Management believes that TDS Telecom has a number of
advantages as an ILEC, including a modern network substantially upgraded to
provide a variety of advanced calling services ("ACS"), a strong local presence
and established brand name, economies of scale not available to smaller
independent operators and attractive, growing markets. However, the competitive
environment in the telecommunications industry has changed significantly as a
result of technological advances, increasing customer requirements and
regulatory changes, including the Telecommunications Act of 1996. In response to
this changing competitive environment, TDS Telecom's business plan is designed
to leverage TDS Telecom's strength as an ILEC into a full-service
telecommunications company. The business plan provides for TDS Telecom to meet
these challenges in three areas:

- by growing and protecting TDS Telecom's core ILEC business;

- by leveraging its strengths into attractive new markets; and

- by creating a robust line of data products and services, and selling them
in existing and new markets.

GROW AND PROTECT CORE ILEC BUSINESS

Management of TDS Telecom believes that the key to growing and protecting
its existing ILEC markets is to continue to build customer loyalty by providing
superior customer service, offering a suite of standardized products and
services, including bundled service offerings, and rapidly developing new
products and services. Management of TDS Telecom believes that its
community-based business offices offering full face-to-face customer service are
a fundamental competitive advantage. That advantage was further enhanced in 1999
when TDS Telecom completed its virtual business office initiative,

24
which links multiple business offices electronically, permitting TDS Telecom to
maintain its local presence while expanding hours and achieving certain
efficiencies of a consolidated call center. With respect to products and
services, TDS Telecom markets itself to consumers as a single telecommunications
provider offering bundled packages of advanced telecommunications services
including local, long distance, Internet and data services. These service
packages are all offered under the TDS Telecom brand name in order to benefit
from the brand equity in this name. In addition, management of TDS Telecom
believes it can achieve cost economies by refining its acquisition strategy to
focus on certain acquisitions which will increase the geographic clustering of
TDS Telecom's ILEC markets. See "ILEC Telephone Markets".

LEVERAGE STRENGTHS INTO CLEC MARKETS

TDS Telecom has begun its controlled entry into certain targeted midsized
communities, geographically proximate to existing TDS Telecom facilities and
service areas, for facilities-based entry as a CLEC. Management of TDS Telecom
believes that the smaller size of these markets reduces the likelihood of facing
significant competition and it can offer a significantly improved service level
over that of the incumbent local exchange carrier. Because it can utilize the
infrastructure (e.g. billing systems, network control center, operating systems,
financial and control accounting, technology planning, etc.) developed for the
TDS Telecom ILEC business, management believes that TDS Telecom can become
profitable in markets too small for start-ups and become profitable faster than
start-ups in the larger of its targeted markets. As in its ILEC markets, TDS
Telecom intends to be the single source for customers' telecommunications needs
in its CLEC markets.

The geographic focus of TDS Telecom's CLEC strategy is designed to leverage
TDS Telecom's existing infrastructure to facilitate early entry into new CLEC
markets and to complement TDS Telecom's ILEC clustering strategy. Consistent
with this strategy, TDS Telecom initiated service as a CLEC in Madison,
Wisconsin, and in Brainerd, Duluth and St. Cloud, Minnesota, in January 1998 and
initiated service as a CLEC in Appleton, Green Bay, Menasha and Neenah,
Wisconsin, in June 1998. In 1999, TDS Telecom initiated service in Oshkosh,
Wisconsin. In Minnesota, TDS Telecom has adopted a slightly different strategy
by entering as a CLEC through its long-distance subsidiary, USLink. USLink is
able to build on its relationship developed as a long distance reseller and now
offers local and Internet access services to its long distance customers in a
number of locations in Minnesota. USLink began converting customers in Brainerd,
Duluth and St. Cloud to its facilities in late 1999, as part of its long-term
strategy. USLink will complete a substantial portion of this conversion in 2000.
TDS Telecom plans to expand its CLEC operations to additional markets with a
controlled entry strategy. See "CLEC Telephone Markets".

PURSUE EMERGING DATA MARKETS

Data communications is one of the fastest growing segments of the
telecommunications services industry. In light of the growth of Internet use and
rapid introduction of new telecommunications technology, TDS Telecom intends to
offer a suite of data products in all of its markets, thereby positioning itself
as a full-service data networking service provider. TDS Telecom currently
provides Internet access service to its ILEC and CLEC customers. Most of TDS
Telecom's data products are in the early stages of development. See "Data
Initiatives".

ILEC TELEPHONE MARKETS

TDS Telecom's goal is to be a leading provider of electronically deliverable
products in its ILEC markets. According to published sources, at December 31,
1999 TDS Telecom was the 8th largest non-Bell local exchange telephone company
in the United States, based on the number of telephone access lines served. At
December 31, 1999, the telephone subsidiaries of TDS Telecom served
approximately 571,700 access lines in 28 states. TDS Telecom currently operates
over 460 central office and remote switching centers in its telephone operating
areas. All of TDS Telecom's access lines are served by digital switching
technology, which, in conjunction with other technologies, allows TDS Telecom to
offer additional premium services to its customers, including call forwarding,
conference calling, caller identification, selective call ringing and call
waiting.

25
As one of the major independent telephone companies in the United States,
TDS Telecom's ILECs provide both local telephone service and access to the long
distance network for customers in their respective service areas. The ILECs also
provide directory advertising through a contract with another company, and
billing and collection services to interexchange carriers ("IXCs"). IXCs are
telephone companies that provide long-distance telephone service between points
in different local exchange areas, states or geographically defined Local and
Access Transport Areas ("LATAs"). TDS Telecom provides centralized
administrative and support services to field operations from its corporate
offices in Madison, Wisconsin.

RETAIL MARKETS

TDS Telecom's ILEC presence includes a Retail Markets Group and Wholesale
Markets Group. The Retail Markets Group is the customer-facing organization for
all retail sales with residential and commercial customers. The Retail Markets
Group includes 109 sales and service offices located in 28 states. The retail
customer base is a mix of rural and suburban customers, with significant
concentrations in the Upper Midwest and in the Southeast. Approximately 78% of
TDS Telecom's retail access lines serve residential customers and approximately
22% serve business customers. Most business customers could be described as
small business or small office/home office type customers.

The Retail Markets Group has three primary goals to support its grow and
protect strategy:

- build customer loyalty;

- grow revenues; and

- control costs.

Management of TDS Telecom believes it can achieve these goals by offering a
continually updated flow of new products and services through value-added
packages and bundles, by building brand equity in the TDS Telecom brand name,
and by providing superior customer service to its retail customers.

VALUE ADDED PRODUCT BUNDLES AND PACKAGES. Management of TDS Telecom
believes that its consumer and business customers have a strong preference to
purchase all of their telecommunications services from a single provider. TDS
Telecom believes that by offering a full complement of telecommunication
services and bundling those services in customer-friendly packages it can build
customer loyalty and reduce customer churn. TDS Telecom added several new
bundles and services in 1999 by combining existing services of its network or
partnering with other vendors. These products include:

- Privacy Pack (five ACS services or switch-based number translation
services offered to customers as a package),

- Caller ID Starter Pack (Caller ID and Call Waiting),

- TDSNET (Internet service)/Voice Mail (switch-base answering machine
service) and

- National Directory Assistance (directory assistance that covers the entire
nation versus a single area code).

TDS Telecom will continue to pursue relationships with strategic partners to
further develop the long distance, video and wireless components of its product
mix.

BRAND EQUITY. TDS Telecom continued the branding process started in 1996.
This process adopted the TDS Telecom name as a unified brand name across its
markets to build its brand image. TDS Telecom has continued its customer
awareness campaign to build awareness of the TDS Telecom name. TDS Telecom
continues to build name awareness through existing customer-facing vehicles such
as bill statements, and vehicle and company signage. Centralized media
purchasing has enabled higher reach and frequency at a lower cost. In 1999, TDS
Telecom continued to focus on building a positive share of mind with current and
prospective customers. This was done by increasing the volume of public

26
relations messages and through linkage of company image with sales and marketing
messages. Management of TDS Telecom believes that branding will increase the
loyalty of its customers and also reduce expenses through more cost-effective
marketing.

CUSTOMER SERVICE. TDS Telecom makes a unique customer service offer to its
retail customers. TDS Telecom is a large national company with a local sales and
service office in each of its markets. This combination provides TDS Telecom's
retail customers with the economies of scale and product offers generally
associated with large companies. It also provides the high levels of personal
customer service generally associated with small companies, through
community-based professional service representatives and field representatives
who both live and work in the communities served. TDS Telecom's strength in two
key areas--product/price and customer service--provides a fundamental
competitive advantage for TDS Telecom.

TDS Telecom completed the Virtual Business Office ("VBO") initiative in
1999. This initiative enables multiple TDS Telecom local sales and service
offices to function as a single office. Management of TDS Telecom believes that
VBO facilitates enhanced customer service at a lower cost. Cost savings are
expected to come through standardization of training and procedures and improved
voice and customer service application technology. Enhanced customer service
will come through expanded hours of operation, improved product, service and
sales training for all customer sales and service representatives, and through
improved customer access to company personnel on the first call. Initial
customer surveys show that customer satisfaction with transactions in the VBO
environment is equal to or better than satisfaction with transactions in the
prior environment.

WHOLESALE MARKETS

The Wholesale Markets Group focuses on TDS Telecom's wholesale customers and
has traditionally provided a majority of TDS Telecom's revenues. TDS Telecom
receives much of its ILEC revenue from the sale of traditional wholesale
services, such as local network access and billing and collections services, to
the IXCs. As a result, TDS Telecom continues to provide a high level of service
to traditional IXC wholesale customers such as AT&T, MCI, Sprint and the RBOCs.

ACCESS REVENUES. TDS Telecom's operating telephone subsidiaries receive
access revenue as compensation for carrying interstate and intrastate
long-distance traffic on its local networks. The interstate and intrastate
access rates charged include the cost of providing service plus a fair rate of
return. Access revenues account for approximately 55% of the revenue generated
by TDS Telecom's ILEC subsidiaries.

TDS Telecom participates in the National Exchange Carrier Association
("NECA") interstate common line and traffic sensitive tariffs for all but one of
its ILEC subsidiaries. These operating companies participate in the access
revenue pools administered by NECA, which collect and distribute revenue from
interstate access services. The FCC created NECA and it is subject to FCC rules
and oversight.

The FCC regulates interstate rates for dominant carriers and other matters
relating to interstate telephone service. On June 4, 1998, the FCC released a
Notice of Proposed Rulemaking on access reform for local exchange carriers
subject to rate of return regulation. In the Notice, the FCC proposed changes
similar to those which were ordered for price cap LECs in 1997. The proposed
changes could negatively affect rural LECs' ability to recover costs from the
interstate jurisdiction. In addition to the FCC's initiatives to reform access,
there have been industry initiatives to develop an overall plan for access
reform, universal service, the form of regulation and separations. These
initiatives seek to reduce access rates, eliminate implicit subsidies, and
maintain universal service in a way acceptable to small, rural LECs as markets
become more competitive. The FCC also released a Notice of Proposed Rule making
on jurisdictional separations reform on October 7, 1997. In the Notice, the FCC
reviewed the current procedures for separating LECs' service costs between state
and federal jurisdictions. Many of the proposals in the Notice seek to limit
costs assigned to the interstate jurisdiction and seek to assign greater costs
to the intrastate jurisdiction. To the extent that the costs are not made up in
the federal and state universal service mechanisms, TDS Telecom may seek rate
increases to offset any reductions in interstate revenues. The FCC has not yet
issued a final order on either Notice.

27
TDS Telecom is also monitoring the effects of increasing volumes of Internet
traffic on the operating telephone subsidiaries' ability to appropriately
recover the network-related costs associated with this traffic. Unless changes
to the access charge methodology and/or to the separations process are made,
increasing costs will continue to be shifted to the intrastate jurisdiction for
recovery and TDS Telecom may need to seek rate increases to recover these costs.
The ILEC trade associations are advocating a freeze in the traffic factors that
would otherwise continue are shifting increasing levels of Internet costs into
the intrastate jurisdiction.

Where applicable and subject to state regulatory approval, TDS Telecom's
ILEC subsidiaries utilize intrastate access tariffs and participate in
intrastate revenue pools. Many intrastate toll revenue pooling arrangements, a
source of substantial revenues to TDS Telecom's ILECs, have been replaced with
access-charge-based arrangements. In these cases, access charges are typically
set to generate revenue flows similar to those realized in the pooling process.
To the extent that state-ordered access charge revisions reduce revenues, TDS
Telecom may seek adjustments in other rates. Some states are utilizing state
high cost funds to offset access charge reductions.

FEDERAL FINANCING

TDS Telecom's primary sources of long-term financing for additions to
telephone plant and equipment have been the Rural Utilities Service ("RUS"), the
Rural Telephone Bank ("RTB") and the Federal Financing Bank ("FFB"), agencies of
the United States of America. The RUS has made primarily 35-year loans to
telephone companies since 1949, at interest rates of 2% and 5%, for the purpose
of improving telephone service in rural areas. Currently, the RUS is authorized
to issue hardship loans at a 5% interest rate and other loans at an interest
rate approximating the government's rate for instruments of comparable maturity.
The RTB, established in 1971, makes loans at interest rates based on its average
cost of money (5.54% for its fiscal year ended September 30, 1999), and in some
cases makes loans concurrently with RUS loans. In addition, the RUS guarantees
loans made to telephone companies by the FFB at the federal cost of money. All
such loans have a maturity date based on the life of the assets being financed.

Substantially all of TDS Telecom's telephone plant is pledged under, or is
otherwise subject to, mortgages securing obligations of the operating telephone
companies to the RUS, RTB and FFB. The amount of dividends on common stock that
may be paid by the operating telephone companies is limited by certain financial
requirements set forth in the mortgages. In any calendar year, companies with
greater than 40% net worth to total assets can distribute the entire amount
above 40%. The majority of TDS Telecom's telephone subsidiaries exceed this
percentage. Approximately $470.1 million may be paid as dividends from the
operating subsidiaries to TDS Telecom.

At December 31, 1999, TDS Telecom's operating telephone companies had
unadvanced loan commitments under the RUS, RTB and FFB loan programs aggregating
approximately $124.3 million, at a weighted average annual interest rate of
6.01%, to finance specific construction activities in 2000 and future years.
These loan commitments are generally issued for five-year periods and may be
extended under certain circumstances. TDS Telecom's operating telephone
companies intend to make further applications for additional loans from the RUS,
RTB and FFB as their needs arise. There is no assurance that these applications
will be accepted or what the terms or interest rates of any future loan
commitments will be.

FEDERAL SUPPORT REVENUES

To promote universal service, the FCC developed a number of federal support
mechanisms to keep telephone rates affordable for both high-cost rural areas and
low-income customers. Many of TDS Telecom's ILEC subsidiaries provide telephone
service in rural areas and all of them offer service to a range of customers
including low-income customers.

The FCC continues to work on reforming universal service. The
Telecommunications Act codified universal service; set forth clear principles
for ensuring affordable access to modern telephone service

28
nationwide; established discounts for schools, libraries and rural health care
facilities; and established a federal-state joint board to make recommendations
to the FCC regarding implementation of the universal service provisions of the
Telecommunications Act.

On May 8, 1997, the FCC released its universal service order. The FCC
adopted the use of forward-looking proxy cost models to determine costs rather
than relying on actual costs. Non-rural companies will begin using the FCC's
Hybrid Cost Proxy Model in 2000 to determine their costs of providing universal
service. Rural LECs will continue to receive support based on their actual costs
using the existing mechanisms, as opposed to proxy models, through at least
December 31, 2000. The Rural Task Force (which is a committee appointed by the
FCC including representatives of the rural ILEC industry, the public and other
telecommunications companies) is currently working on its recommendation to the
Federal-State Joint Board on the appropriate mechanism for rural carriers. Rural
LECs will not transition to another method of receiving support until it can be
shown that the method will be sufficient to meet the universal service needs of
customers in the areas they serve. The Rural Task Force's recommendation is not
due to the Joint Board and the FCC until September 2000.

All telecommunications carriers are required to contribute to the universal
service fund based on their interstate and international revenues. Carriers may
recover their contributions through their access charges; however, they are not
required to do so. Since TDS Telecom's ILECs are members of the NECA pools, they
will continue to recoup their contributions through access charges rather than
through end-user charges.

Historically, telephone company acquisition and investment decisions assumed
the ability to recover costs and a reasonable rate of return through local
service, access, and support revenues. As universal service and access are being
reformed, these revenues streams are becoming less certain. Potential declining
access rates and revisions to universal service support may lead to higher local
rates and/or declining earnings. Significant changes in the universal service
funding system could affect TDS's and TDS Telecom's acquisition and investment
strategy.

TELEPHONE ACQUISITIONS

TDS and TDS Telecom continually review attractive opportunities to acquire
operating telephone companies. Since January 1, 1995, TDS has acquired 14
telephone companies serving a total of 57,900 net access lines for an aggregate
consideration totaling $161.5 million, all of which were transferred to TDS
Telecom. The consideration paid by TDS consisted of $22.3 million in cash and
notes, 30,000 TDS Preferred Shares and 3.0 million TDS Common Shares. TDS sold
one telephone company serving 1,100 access lines in 1995.

Telephone holding companies and others actively compete for the acquisition
of telephone companies and such acquisitions are subject to the consent or
approval of regulatory agencies in most states and, in some cases, to federal
waivers that may affect the form of regulation or amount of interstate cost
recovery of acquired telephone exchanges. While management believes that it will
be successful in making additional acquisitions, there can be no assurance that
TDS or TDS Telecom will be able to negotiate additional acquisitions on terms
acceptable to them or that regulatory approvals, where required, will be
received.

TDS Telecom provides the telephone subsidiaries with centralized purchasing
and general management and other services. These services afford the
subsidiaries expertise in finance, accounting and treasury services; marketing;
customer service; traffic; network management; engineering and construction;
customer billing; rate administration; credit and collection; and the
development of administrative and procedural practices.

CLEC TELEPHONE MARKETS

The Telecommunications Act facilitates entry of TDS Telecom into new markets
by requiring non-exempted ILECs (e.g., RBOCs and GTE) to provide reasonable and
non-discriminatory interconnection services and access to unbundled network
elements to any CLEC that seeks to enter the markets in which the ILEC already
offers services. TDS Telecom, through TDS METROCOM and USLink,

29
wholly owned subsidiaries of TDS Telecom, has targeted certain midsized,
geographically clustered communities, for facilities-based entry as a CLEC.
Management of TDS Telecom believes that the size of many of the target markets
will sustain a limited number of facilities-based competitors in addition to the
ILEC. While additional competitors may enter such markets as resellers, TDS
Telecom believes only facility-based CLECs will be significantly profitable over
the long term because facilities will provide a long-run cost advantage,
discourage further competitors from entry and enable an alternative wholesale
strategy for growth. To this end, TDS Telecom plans to build switching and other
network facilities in its targeted CLEC markets. TDS Telecom plans to follow a
"clustering" approach to building its CLECs which will allow it to seek regional
long distance traffic, share service and repair resources, and realize marketing
efficiencies. As in its ILEC markets, TDS Telecom intends to become an
Integrated Communications Provider ("ICP") in its chosen CLEC markets. It will
provide local, long distance, Internet access and other services through its own
facilities and via resale. TDS Telecom intends to resell mobile services in many
markets.

TDS Telecom's first CLEC, TDS METROCOM, became operational in Madison,
Wisconsin, in January 1998. TDS METROCOM is a facilities-based, full-service
alternative to the Ameritech (now SBC) telephone company, providing both voice
and data services to commercial and consumer accounts, as well as wholesale
services to IXCs and other carriers. TDS METROCOM now also operates as a CLEC in
Appleton, Green Bay, Menasha, Neenah and Oshkosh, Wisconsin. In early 2000, TDS
METROCOM expects to begin facility-based services in the western suburbs of
Milwaukee and Fond Du Lac, Wisconsin. USLink began offering local service (in
addition to its long distance and Internet products) on a resale basis in 1998
in Minnesota, with a focus on the Brainerd, St. Cloud and Duluth markets. In
1999, USLink deployed local switching platforms in three markets in
Minnesota--Brainerd, St. Cloud and Duluth to enhance the operating margins. TDS
Telecom's CLEC strategy is currently focused on markets in Wisconsin and
Minnesota and adjoining geographical areas. TDS Telecom expects to continue to
grow the competitive local exchange business with a controlled entry strategy.

The CLEC strategy will place primary emphasis on the small and medium-sized
commercial and wholesale customers. Consumer markets are typically pursued soon
after the CLEC enters the commercial market. Wholesale customers purchase
transmission capacity and access services from CLECs. These services will be
available to wholesale customers shortly after network completion. TDS Telecom
believes that these customers are generally more sophisticated and are more
likely to switch providers to obtain network reliability, redundancy and more
flexible pricing. Medium-sized commercial prospects are characterized by
above-average access line to employee ratios, heavier utilization of data
services, and a focus on using telecommunications for business improvement
rather than on cost reduction concerns. Commercial prospects are generally
growth-oriented and may be underserved by the ILEC or major IXCs. TDS Telecom's
CLECs will pursue a personal selling approach for their primary target markets.
This approach builds on customer preference for integrated communication
services and the customer's perception that the quality of the product includes
personalized service.

While the CLECs are positioning themselves as high-quality providers, they
expect price competition from the ILECs as they attempt to retain and regain
their customers. The CLECs will seek to maintain an efficient cost structure to
ensure that they can match price-based initiatives from competitors. The ILEC is
likely to be constrained in the short term by the existing regulatory
environment; as a result, TDS Telecom's CLECs expect to be more flexible in
responding to customer needs. To effectively compete in this new environment,
TDS Telecom's CLECs will enhance their efforts at product development to provide
high-quality, cutting-edge services to their customers.

TDS Telecom believes the targeted CLEC markets present a significant
opportunity to market data services, as the major carriers serving these
locations have typically underinvested in these markets despite the growing
demand. Switched data communications represents one of the fastest growing
segments of the telecommunications services market. Computer proliferation,
connectivity via local and wide area networks, the Internet and the emergence of
multimedia applications are all driving demand. As a result, the United States
network infrastructure is strained at the local level. TDS Telecom's CLEC
initiative will add local capacity in its selected markets designed to help
accommodate this growth.

30
DATA INITIATIVES

TDS Telecom is also seeking to recognize additional revenue opportunities in
related areas of the telecommunications industry. In 1999 TDS Telecom continued
to expand its investments into data communications to offer a suite of data
products in its CLEC and in many of its ILEC markets. TDSNET, TDS Telecom's
Internet service provider, expanded its operation in 1999 adding 16 additional
markets. During 1999, TDS Telecom completed the integration of its Internet and
developing data services operations into products and services offered by its
ILEC and CLEC business units. Alignment of TDS's growing Internet product line
into its core business units, coupled with sales and marketing strategies
focused on in-territory and nearby markets, has allowed TDS Telecom to continue
its Internet sales growth while benefiting from operational and financial
synergies. At December 31, 1999, TDS Telecom provided Internet services to
approximately 73,000 customers through its ILEC and CLEC subsidiaries.

In furtherance of TDS Telecom's strategy to position itself as a
full-service, networking service provider, it plans to make high-speed Digital
Subscriber Loop ("DSL") based services available in the near term to customers
in several of its ILEC markets. TDS Telecom believes DSL technology will form
the foundation for new, high-speed data services and applications and has
conducted trials of DSL modems manufactured by several vendors. TDS Telecom's
first commercial offering of DSL began in Wisconsin in 1998 in TDS METROCOM and
DSL was introduced in the ILEC Tennessee market in the fall of 1999. This
technology is employed to offer high-speed Internet access as well as high-speed
LAN connectivity. TDS Telecom's data business offerings include web-hosting
services, co-location services and customized web content development for
various sized customer market segments.

TDS Telecom is offering enterprise network management center services to
large businesses and government through expanded use of its own network
management facilities, and its knowledgeable personnel. Such services consist of
centralized network monitoring as well as network management. In 1997, the State
of Wisconsin awarded TDS Telecom the "BadgerNet" enterprise network management
center multi-year contract. The BadgerNet enterprise network management center
has been designed to provide a focal point for the operational management of
state agency and university networks, services and equipment and began
operations in 1998. TDS Telecom is currently developing an enterprise network
management center product offering. TDS Telecom believes that it has the
experience, partnerships and technology to actively manage networks for third
parties, and has the capacity to provide enterprise network management center
services to additional third parties.

Although TDS Telecom currently operates these data businesses, they are in
early stages of development. There can be no assurance that TDS Telecom will
substantially expand these businesses.

SALES AND MARKETING--ILEC

TDS Telecom seeks to leverage its networks through sales and marketing
activities targeted at two separate customer groups: retail and wholesale.
Retail customers are composed primarily of residential customers, businesses,
government and institutional telecommunications users. Wholesale customers
consist of IXCs and information service providers such as commercial data
processing service providers and Internet service providers.

RETAIL MARKETS

COMMERCIAL MARKETS. Businesses account for approximately 22% of TDS
Telecom's ILEC access lines. TDS Telecom focuses its marketing on
information-intensive industries such as financial services, health services,
realty, hotels and motels, education and government. TDS Telecom uses its direct
sales force, targeted mailings, and telemarketing to sell products and services
to the commercial markets, which are segmented into tiers based on size and
strategic importance. Different sales and distribution channels are employed for
each segment. Account executives focus on the most profitable customers by
staying in contact with them on a regular basis. TDS Telecom employs an
aggressive compensation plan for its account executives targeted at revenue and
customer satisfaction results.

CONSUMER MARKETS. TDS Telecom's promotional and sales strategy consists of
two major initiatives: building brand equity by creating awareness of the TDS
Telecom brand name; and using direct

31
marketing to sell specific products and product groupings. Approximately 78% of
TDS Telecom's total ILEC access lines are residential. Approximately 71% of
these residential customers live in rural areas, while the other 29% are located
in suburban settings. The nature of TDS Telecom's markets has historically made
direct marketing more effective than mass media such as radio and television. In
addressing its consumer markets, TDS Telecom has made extensive and aggressive
use of direct mail. It has been more selective, though still active, in the use
of telemarketing as a means of generating awareness, qualified leads, and actual
sales. Newspaper advertising is used as well. Uniform branding has made the use
of mass media more attractive, and TDS Telecom has increasingly incorporated
these elements into its marketing media mix.

In nearly all of its ILEC markets, TDS Telecom offers the complete family of
custom calling services including call waiting, call forwarding, three-way
calling, and speed dialing. In 1999, TDS Telecom sold 10,959 residential second
lines, an increase of 29% over 1998. TDS Telecom's advanced calling services
family of products is centered around Caller ID service. In 1999, the ACS family
of services was available to 96% of the lines in service compared to 89% in
1998. Penetration of Caller ID increased from 19% to 24% of lines equipped, and
aggregate penetration of ACS increased from 35% to 41% of lines equipped.

WHOLESALE MARKETS

Access charges, billing and collection services and other primarily
traditional wholesale offerings generated $286 million, or approximately 58%, of
TDS Telecom's revenue for the year ended December 31, 1999. Account teams in
Madison, Wisconsin, and Knoxville, Tennessee currently service wholesale
customers. These teams manage and coordinate the purchasing of access services
by the major IXCs and RBOCs on a national basis.

TDS Telecom also provides new wholesale offerings to non-traditional
customers. TDS Telecom has targeted wireline and wireless telecommunications
service providers and select vertical markets.

COMPETITION

ILEC MARKETS

The Telecommunications Act has helped to introduce a new wave of competition
in the telecommunications industry. The Telecommunications Act embraced
competition in telecommunications as a national policy and also started the
process of deregulation. The Telecommunications Act requires ILECs to provide
reasonable and non-discriminatory interconnection services and access to
unbundled network elements to any CLEC that seeks to enter the markets in which
the ILEC already offers services. The Telecommunications Act also allows CLECs
to co-locate network equipment on the ILEC's premises and prevents ILECs and
CLECs from unduly restricting each other from use of facilities or information
that would allow other organizations to effectively compete with them. The FCC
has recently added further interconnection requirements to spur competitive
broadband development.

All 104 TDS Telecom ILEC companies are exempt from many of the provisions of
the Telecommunications Act. Specifically, they are exempt from the requirements
imposed on the ILECs until they receive a bona fide request for interconnection
and the state commission lifts the exemption. This, coupled with the economics
of competing in lower population density markets, may delay certain forms of
competition in TDS Telecom ILEC service areas while additional regulatory issues
are resolved. However, some TDS Telecom ILECs already face interconnection
requests, filed by potential competitors, and TDS Telecom believes there will
eventually be open entry into nearly every aspect of the telephone industry,
including local service, interstate and intrastate toll, switched and special
access services and customer premises equipment.

TDS Telecom expects competition in the telephone business to be dynamic and
intense as a result of the entrance of new competitors and the development of
new technologies, products and services. Increased competition is expected from
competitive access providers, IXCs, out-of-territory RBOCs and independent
telephone companies, niche entrepreneurs, cable and utility companies, and
wireless and satellite providers. To face this increasing competition, TDS
Telecom's strategy is to build customer loyalty by providing superior customer
service, offering a suite of standardized products and services bundled in
response to customer preferences, and rapidly developing new data products and
services.

32
In the long run, TDS Telecom believes that the wireless companies pose the
most significant threat to the local exchange industry. Wireless providers are
also seeking universal service support in various rural markets. Although
traditional analog cellular radio service currently cannot match the features or
the clarity of communications provided via wireline networks, and as a result of
high error rates and speed limitations is not suitable for data transmission,
advances in digital cellular and PCS technology may permit wireless companies to
match the functionality and clarity of wireline communication and still allow
customers the mobility of traditional wireless service. As the emerging PCS
companies compete directly with established cellular radio companies, flat-rate
pricing alternatives may drive wireless rates towards or below wireline rates.
In order to minimize the impact of wireless competition, TDS Telecom is pursuing
wholesale service agreements with wireless companies to provide services to them
and expects to provide wireless services through resale in many of its markets.

CLEC MARKETS

In Wisconsin and Minnesota and in each geographical area in which TDS
Telecom expands as a CLEC, TDS Telecom faces, and expects to continue to face,
significant competition from the ILECs which currently dominate their local
telecommunications markets. TDS Telecom will compete with the ILECs on the basis
of price, reliability, state-of-the-art technology, product offerings, route
diversity, ease of ordering and customer service. However, the ILECs have
long-standing relationships with their customers, may have the potential to
subsidize competitive services from monopoly service revenues, and benefit from
some favorable state and federal regulations.

Although the ILECs generally are subject to greater pricing and regulatory
constraints than CLECs, ILECs are achieving increased pricing flexibility for
their services as a result of, among other things, the Telecommunications Act.
Existing competition for private line, special access and local exchange
services is based primarily on quality, capacity and reliability of network
facilities, customer service, response to customer needs, service features and
price, and is not based on any proprietary technology. As a result of the
technology used in its networks, TDS Telecom may have cost and service quality
advantages over some currently available ILEC networks. In addition, TDS Telecom
believes that, in general, it will provide more attention and responsiveness to
its customers than will its ILEC competitors.

TDS Telecom may face competition from other CLECs and other potential
competitors in the cities in which TDS Telecom offers and plans to offer its
services. Many of TDS Telecom's existing and potential competitors have
financial, personnel and other resources significantly greater than those of TDS
Telecom. However, TDS Telecom believes that its strategy of targeting midsized
communities, and its capital, technical and management resources will enable it
to achieve its strategic objectives.

In addition to the ILECs and other CLECs, potential competitors capable of
offering private line, special access and local exchange services include long
distance carriers, cable television companies, electric utilities, microwave
carriers, wireless telephone system operators, and private networks built by
large end users. Previous impediments to certain utility companies entering
telecommunications markets under the Public Utility Holding Company Act of 1935
were removed by the Telecommunications Act.

CONSTRUCTION AND DEVELOPMENT PROGRAM--ILEC

In 1999, TDS Telecom continued its program of enhancing and expanding its
service providing network. TDS Telecom intends to meet competition by providing
its customers with high-quality telecommunications services and building its
network to take full advantage of advanced telecommunications technologies such
as:

- Signaling System 7 ("SS7"), a high speed data network with dedicated
access points that provides for various call set up, call routing and
enhanced calling features,

- Fiber optic fed Digital Serving Areas ("DSAs"), a defined geographic area
within an exchange that is served by a digital loop carrier system. The
digital loop carrier system extends to that geographic area the line side
hardware of the central switch.

33
- Integrated Services Digital Network ("ISDN"), a digital switched service
that provides end-to-end digital transmission and signaling, and

- Advanced Calling Services.

The following table shows that TDS Telecom continues to make these advanced
features available to a large majority of its ILEC customers:

<TABLE>
<CAPTION>
AS OF DECEMBER 31, 1999
-------------------------------------------------
# OF ILEC WORKING LINES % OF ILEC WORKING LINES
----------------------- -----------------------
<S> <C> <C>
Signaling System 7............................... 556,973 98%
Advanced Calling Services........................ 556,973 98%
Integrated Services Digital Network.............. 450,711 79%
</TABLE>

As TDS Telecom upgrades and expands its network, it is also standardizing
equipment and processes to increase efficiency and has centralized the
monitoring and management of its network to reduce costs and improve service
reliability. TDS Telecom formed strategic alliances with Lucent Technologies and
Siemens Telecom Networks to modernize and standardize TDS Telecom's ILEC
switching platform with the Lucent 5ESS-2000 and Siemens EWSD switches. This
standardized switching platform assisted TDS Telecom in implementing its
24-hour-a-day/7-day-per-week ILEC and CLEC network management center. The
network management center continuously monitors the network in an effort to
proactively identify and correct network faults prior to any customer impact.
The network management center is proactively monitoring 100% of TDS Telecom's
ILEC network.

TDS Telecom's total 2000 capital budget is $125.0 million compared to actual
capital expenditures of $122.2 million in 1999 and $143.1 million in 1998. The
telephone capital additions budget for 2000 includes approximately
$30.2 million for CLEC markets, and $39.3 million for outside plant facilities
and $31.3 million for switching facilities in the ILEC markets. Financing for
the 2000 capital additions will be primarily provided by internally generated
funds and supplemented by federal long-term financing.

REGULATION

TDS Telecom subsidiaries are primarily ILECs, the traditional regulated
local telephone companies in their communities. TDS Telecom's ILEC subsidiaries
are regulated by state regulatory agencies and TDS Telecom seeks to maintain
positive relationships with these regulators. Rates, including local rates,
intrastate toll rates and intrastate access charges, are subject to state
commission approval in most states. The state regulators also establish and
oversee any state universal service funds. TDS Telecom intends to continue to
pursue changes in rate structures and regulation that will provide affordable
rates and reasonable earnings. TDS Telecom is currently evaluating whether to
elect alternative forms of regulation in each of its states. Alternative
regulation describes regulatory frameworks which allow local exchange carriers
to benefit from revenue growth and expense control in exchange for rate ceilings
and other restrictions. In some states, alternative regulation, together with
controls on expense growth, has the potential to boost regulated earnings. The
TDS Telecom subsidiaries that provide services in competition with other ILECs,
or long distance services in competition with other long distance providers are
subject to minimal regulation with respect to such services.

For the TDS Telecom ILECs, state regulators can approve service areas,
service standards, and accounting methods. In some states, construction plans,
borrowing, depreciation rates, affiliated charge transactions and certain other
financial transactions are also subject to regulatory approval. States
traditionally regulated entry into local markets by designating a single carrier
to be the universal service provider. However, the Telecommunications Act has
almost completely pre-empted state authority over market entry. Each state
retains the power to impose competitively neutral requirements that are
consistent with the Telecommunications Act's universal service provision and
necessary for universal services, public safety, and welfare, continued service
quality and consumer rights. While a state may not impose requirements that
effectively function as barriers to entry, and the FCC must pre-empt challenged
state requirements if they impose such barriers to entry, a state retains
limited authority to regulate certain competitive practices in rural telephone
company service areas. Proceedings to pre-empt laws and policies in several
states are pending before the FCC, and the FCC has preempted several state laws
as unduly restricting competitive entry or unduly giving preferences to
incumbents.

34
The Telecommunications Act establishes a general duty for all
telecommunications carriers, including wireless providers, to interconnect with
other carriers. Congress prescribed a more specific list of interconnection
requirements for all local exchange carriers ("LECs") including resale, number
portability, dialing parity, access to rights-of-way and reciprocal
compensation. Unless exempted or granted suspension or modification, ILECs have
additional obligations: (a) to negotiate in good faith terms of interconnection;
(b) to comply with more detailed interconnection terms, including
non-discrimination and unbundling their network and service components so
competitors may use only those elements they choose for providing their
services; (c) to offer their retail services at wholesale rates to facilitate
resale by their competitors; and (d) to allow other carriers to place equipment
necessary for interconnection or access on their premises. The FCC also requires
ILEC's rates for interconnection and network components to be based on
"forward-looking economic costs." Challenges to the new cost methodology,
pending in a federal court of appeals, attack the requirement because it does
not let ILECs recover their full historical or actual costs as measured under
the FCC's prior cost measurement approach.

As defined in the Telecommunications Act, all of TDS Telecom's ILEC
subsidiaries qualify as rural telephone companies. Therefore, they are exempt
from the ILEC interconnection requirements until they receive a bona fide
request for interconnection and the state commission lifts the exemption. That
process is underway in some TDS Telecom ILEC markets. Under an FCC
interpretation of the Telecommunications Act, under challenge in the same
federal appellate court case, rural telephone companies bear the burden of proof
to show that elimination of the rural exemption would be likely to cause undue
economic burden beyond the economic burdens typically associated with efficient
competitive entry or to meet other tests in the law for remaining exempt. The
FCC has also adopted extensive rules for state commissions to follow in
mediating and arbitrating interconnection negotiations between incumbent LECs
and carriers requesting interconnection, services or network elements. The
Telecommunications Act establishes deadlines, standards for state commission
approval of interconnection agreements and recourse to the FCC if a state
commission fails to act.

The FCC is still considering rules and policies implementing the provisions
of the Telecommunications Act. Many of the FCC determinations made to implement
the Telecommunications Act and to facilitate competition in local service and
other telephone services involve mandatory investment in and upgrades to TDS
Telecom LEC networks, and impose greater costs and obligations on ILECs than on
their competitors. These investments and upgrades include requirements to
implement local number portability so subscribers may change to competitors'
services without changing their telephone numbers, network signaling information
that must be provided to certain other carriers and pay phone providers, and
other changes that require additional investments and expenses. TDS Telecom is
seeking to comply with these requirements or to obtain the necessary suspensions
or modifications where appropriate, while at the same time also pursuing
policies that provide a fair opportunity to recover its costs. For example, the
ILEC industry is seeking FCC reconsideration of an order setting rates for
providing directory listing information about ILEC customers to competing
telephone directory publishers because the rates, set to recover the costs of
the largest ILECs, are inadequate for companies such as the TDS Telecom ILECs. A
new law also requires LECs to provide access to certain communications for law
enforcement purposes. The full cost of complying and the adequacy of the
government compensation are not yet known, but the LEC industry is pursuing
regulatory policies that cover any shortfall in available government
compensation.

The FCC continues to explore how to comply with the requirement in the
Telecommunications Act for federal and state authorities to encourage nationwide
advanced broadband infrastructure development. Future FCC decisions could
require extensive additional investment. For example, in November 1999, the FCC
released an order mandating line sharing. In its order, the FCC amended its
unbundling rules to require ILECs to provide unbundled access to a new network
element--the high frequency portion of the local loop. As noted, TDS Telecom
ILECs are currently exempt from the interconnection and unbundling provisions of
the Telecommunications Act. Until a TDS Telecom ILEC has received a bona fide
request and the state commission has terminated the rural exemption, that ILEC
will not be required to provide line sharing. When a currently exempt ILEC is
required to provide line sharing, additional costs may be incurred to condition
loops to provide the service. As another example,

35
any requirement for nationwide access to advanced network capabilities at this
time would entail large investments. If such regulatory requirements did not
carry sufficient added support or cost recovery based on real market demand, TDS
Telecom would need to seek rate increases or other relief.

TDS Telecom seeks to maintain and enhance existing revenue streams despite
heightened earnings review activity by state regulators and the advent of local
exchange competition sparked by the Telecommunications Act. TDS Telecom is
preparing for competition even though its operating subsidiaries remain governed
by state regulators. For example, TDS Telecom is seeking the necessary pricing
flexibility to adjust its rate structures to a more competitive model. TDS
Telecom also continues to participate in state and federal regulatory and
legislative processes to urge that any telecommunications reform measures treat
rural areas fairly and continue to provide sufficient contributions to high cost
rural service areas to keep TDS Telecom ILECs' rates affordable and allow for
the continued development of rural infrastructure. The ongoing changes in public
policy due to numerous FCC and court proceedings and the introduction of
competition may affect the earnings of the operating subsidiaries, and TDS
Telecom is not able to predict the impact of these changes.

While the majority of TDS Telecom's ILEC subsidiaries continue to operate in
a rate-of-return environment, a number of state commissions are negotiating, or
have agreed to, alternative regulation plans with LECs. Price regulation, the
most common form of alternative regulation, focuses on the price of
telecommunication services. TDS Telecom's ILEC subsidiaries in Alabama,
Arkansas, Michigan and Pennsylvania are currently operating in a price-regulated
environment, whereby the commissions in those states no longer review earnings.
For several years, the regional Bell operating companies and some of the
nation's larger LECs have operated under an FCC "price cap" plan, modified in
1997, where earnings can be increased only through productivity improvements.

In 1999, TDS Telecom's telephone subsidiaries did not elect either price
caps or an alternative FCC plan, which was designed for smaller LECs. Instead,
the operating subsidiaries plan to continue under traditional rate-of-return
regulation for interstate purposes, unless those regulatory requirements are
changed. Approximately one-third of TDS Telecom's telephone subsidiaries serve
high-cost areas and a number of TDS Telecom ILECs receive federal universal
service support under the current transitional federal high cost support
program. Important averaging mechanisms associated with the NECA pooling process
would be lost if TDS Telecom elected either of the alternatives to traditional
rate-of-return regulation. TDS Telecom is also participating in ongoing
proceedings to make universal service sustainable as competition takes hold in
rural markets. TDS Telecom and rural ILEC associations seek to demonstrate that
proposals to measure rural telephone companies' costs for universal service
support calculations using a forward-looking proxy model based on the costs of a
hypothetical maximally-efficient carrier, fail to comport with the universal
service mandate of the Telecommunications Act. Significant reductions in high
cost support for TDS Telecom's high cost ILECs, due to changes in support
mechanisms or the shifting of support per line that is "portable" to competitors
that qualify for support, may affect their ability to modernize and recover
their full actual costs. The proceeding to represcribe the authorized rate of
return for interstate services provided by ILECs remains pending at the FCC.
Currently, this rate is set at 11.25%. Reduction of the interstate rate of
return would have detrimental effects on ILECs and could impact the ability of
ILECs to continue to invest in infrastructure. TDS Telecom, along with the rural
industry associations, believes that it is inappropriate for the FCC to
represcribe the rate of return at this time, and that represcription should not
occur until after the FCC resolves other pending issues including universal
service, access reform, and separations (the allocation of costs to state and
interstate jurisdictions) reform. If the FCC proceeds with the represcription,
TDS Telecom may potentially be faced with a lower allowed interstate rate of
return, a reduction in universal service funds, and potentially higher local
rates. Both access reform and universal service reform issues remain to be
resolved by the FCC in further proceedings. A rural industry association effort,
led in part by TDS Telecom, has developed a comprehensive plan to address
universal service, access reform, rate of return and separations reform for
rural and rate of return LECs.

Access to affordable long-distance service in rural areas was achieved
because the FCC ordered AT&T to provide nationwide average rates. As a result of
increasing competition, the FCC lifted all regulations relating to AT&T's
interstate services in 1996. However, the Telecommunications Act preserves
interstate toll rate averaging and imposes a nationwide policy that interstate
and intrastate

36
long-distance rates of all long-distance carriers should not be higher in rural
areas than in urban areas they serve. In 1999, AT&T and several regional Bell
operating companies began limiting and/or discontinuing their long distance
services in TDS Telecom serving areas. TDS Telecom will continue to monitor and
participate in regulatory activities at both the federal and state levels to
ensure continued affordable long-distance and local rates for even its most
remote exchanges. Unresolved issues affecting TDS Telecom ILECs' access charge,
jurisdictional cost separations and federal universal service support payments
are described in "Wholesale Markets" and "Federal Support Revenues," above.

The FCC is investigating objections by interexchange carriers that they
should not be required to use CLECs' terminating access services when they
consider the charges excessive and is considering whether and how to prevent
excessive charges by CLECs although the person to whom a call is terminated, not
the interexchange carrier, controls the choice of what terminating access
carrier the interexchange carrier must use. The FCC's ruling that Internet
access is an interstate service, and not a local service when an Internet access
call is delivered to an information provider, also may result in decreased
intrastate revenues for CLECs providing access to information providers when
current grandfathered contract terms expire.

BROADBAND PCS OPERATIONS

VOICESTREAM MERGER

On September 17, 1999, the Board of Directors of TDS decided not to pursue a
spin-off of Aerial Communications, Inc., an 82.1%-owned subsidiary of TDS, and
approved a merger between Aerial and VoiceStream Wireless Corporation
("VoiceStream") pursuant to an Agreement and Plan of Reorganization dated
September 17, 1999. As a result of the merger, Aerial shareholders will receive
0.455 VoiceStream common shares for each share of Aerial stock they own, subject
to adjustment in certain circumstances. Aerial public shareholders will have a
right to elect to receive $18 in cash in lieu of shares of VoiceStream. The
parties anticipate that the merger will be tax-free to Aerial shareholders that
elect to receive VoiceStream stock. This merger is subject to the approval of
the Federal Communications Commission. The merger is expected to close in the
second quarter of 2000. See "Discontinued Operations."

As a result of the board's approval of the plan, the consolidated financial
statements and supplemental data of TDS have been adjusted to reflect the
results of operations and net assets of Aerial as discontinued operations in
accordance with generally accepted accounting principles. Financial statements
for prior periods have been reclassified to conform to current year
presentation.

TDS expects to recognize a net gain on the ultimate disposition of Aerial
and, accordingly, has deferred recognition of Aerial's net operating losses of
$44.2 million from September 18, 1999 through December 31, 1999.

COMPANY

Aerial is a provider of Personal Communications Services in the Minneapolis,
Tampa-St. Petersburg-Orlando, Houston, Pittsburgh, Kansas City and Columbus
Major Trading Areas (collectively, the "PCS Markets"). The PCS Markets include
approximately 27.9 million population equivalents. Aerial has constructed
networks for its PCS Markets using Global System for Mobile Communication
("GSM") technology. Aerial served 422,900 PCS telephones at December 31, 1999.
At December 31,1999, Aerial had expanded its system coverage to total more than
80% of the six Major Trading Areas ("MTAs") total population.

PCS is the term used to describe the wireless telecommunications services
that are offered by those companies that acquired licenses for radio spectrum
(frequency range 1850-1990 MHz) in the FCC auctions and are the newest entrants
in the wireless telecommunications market. PCS competes directly with existing
cellular telephone, paging and specialized mobile radio services. PCS providers
were the first in most markets to offer mass market all-digital mobile networks.
In addition, Aerial believes PCS providers may be among the first to be able to
offer mass market wireless local loop applications, in competition with switched
and direct access local telecommunications services.

37
Aerial's strategic goal is to take full advantage of the potential of
wireless telecommunications. Aerial sees an opportunity for significant growth
in the wireless telecommunications market through the shift of existing wireless
usage patterns from applications focused on business use, special occasions and
emergencies to much broader applications for everyday use. Aerial is structured
to meet the increasingly competitive challenges of the wireless
telecommunications marketplace, and has a marketing-oriented approach focused on
serving its customers and their needs. Since 1983, the demand for wireless
telecommunications services has grown dramatically as cellular, paging and other
emerging wireless personal communications services have become widely available
and increasingly affordable. As of December 31, 1999, there were an estimated
86 million domestic wireless telephone subscribers (representing both cellular
and PCS customers), which represented U.S. market penetration of approximately
32%.

During 1996 and early 1997, Aerial contracted for network equipment, billing
systems, support software and the equipment and services necessary to launch
service. Additionally during this period, Aerial completed the design for its
PCS networks, acquired and built out the switching centers serving each market,
leased and built out a National Operations Center, leased or purchased the cell
sites required to launch service and commenced zoning and building the sites.
The Columbus MTA launched service on March 27, 1997. Aerial's five remaining
MTAs launched service during the second quarter of 1997. Across all six markets,
Aerial launched with approximately 600 cell sites in service. Aerial had 1,278
cell sites in service by the end of 1999. The coverage of Aerial's PCS networks
includes the major metropolitan areas within the PCS Markets, as well as
portions of the major highway corridors extending out from those areas.

In November 1996, TDS entered into a Member Control Agreement ("Agreement")
forming a joint venture with Rural Cellular Corporation ("RCC"), called the
Wireless Alliance, LLC ("WALLC"), to build out certain rural areas covering
approximately 925,000 population equivalents in the Minneapolis MTA. Aerial has
contributed 20 MHz of its Minneapolis MTA license covering certain territories
as defined in the Agreement in return for a 30% equity interest in the joint
venture. RCC built the network and is responsible for the ongoing operations.
The WALLC launched service in 1998. The joint venture purchases services such as
network switching from Aerial. The network uses GSM technology.

WIRELESS TELECOMMUNICATIONS INDUSTRY

OVERVIEW. Wireless service is currently available using analog or digital
technology. Traditionally wireless services transmitted voice and data signals
over analog-based networks by varying the amplitude or frequency of one
continuous electronic signal transmitted over a single radio channel. Analog
technology currently has several limitations, including inconsistent service
quality, lack of privacy, limited capacity and less reliability in transferring
data without errors. Aerial has chosen GSM, which utilizes a digital technology,
for use in the PCS Markets. Digital systems convert voice or data signals into a
stream of digits that is compressed before transmission, enabling a single radio
channel to carry multiple simultaneous signal transmissions. This additional
capacity, along with improvements in digital protocols, allows digital-based
wireless technologies to offer new and enhanced services, such as greater call
privacy and more robust data transmission features, such as "mobile office"
applications (including facsimile, electronic mail and wireless connections to
computer/data networks, including the Internet).

PCS spectrum differs from existing cellular and SMR spectrum in three basic
ways: frequency, spectrum and geographic division. PCS networks will operate in
a higher frequency range (1850-1990 MHz) compared to the cellular and SMR
frequency range (800-900 MHz). PCS is comprised of 30 or 10 MHz spectrum versus
25 MHz spectrum for cellular networks. As a result of the improved capacity of
the infrastructure and large allocation of spectrum in the A, B and C PCS
frequency Blocks, PCS will have more capacity for new wireless services such as
data and video transmission. Finally, the geographic areas for PCS licenses are
divided differently than for cellular licenses. PCS is segmented among 51 MTAs
and 493 Basic Trading Areas ("BTAs") as opposed to cellular's 306 Metropolitan
Statistical Areas ("MSA") and 428 Rural Service Areas ("RSA"). An MTA license
generally covers a much larger geographic area than a BTA, MSA or RSA license.

38
OPERATION OF WIRELESS NETWORKS.  Wireless service areas are divided into
smaller geographic areas called "cells", each of which contains an antenna and a
base transceiver station ("BTS") consisting of a low-power transmitter, a
receiver and signaling equipment. The cells are typically configured on a grid
in a honeycomb-like pattern, although terrain factors (including natural and
man-made obstructions) and signal coverage patterns may result in irregularly
shaped cells and overlaps or gaps in coverage. The BTS in each cell is connected
by microwave, fiber optic cable or telephone wires to a switching office
("mobile switching center" or "MSC"). The MSC controls the operation of the
wireless phone network for its entire service area, performing inter-BTS
hand-offs, managing call delivery to phones, allocating calls among the cells
within the network and connecting calls to local landline telephone systems or
to long-distance telephone carriers. Wireless service providers have
interconnection agreements with various local exchange carriers and
interexchange carriers, thereby integrating the wireless phone network with
landline telecommunications systems. Because two-way wireless networks are fully
interconnected with landline telephone networks and long-distance networks,
customers can receive and originate both local and long-distance calls from
their wireless phones.

The signal strength of a transmission between a phone and a BTS antenna
declines as the phone moves away from the BTS antenna. The MSC and the BTSs
monitor the signal strength of calls in process. When the signal strength of a
call declines to a predetermined level, the MSC may "hand off" the call to
another BTS that can establish a stronger signal with the phone. If a phone
leaves the service area of the wireless service provider, the call is
disconnected unless an appropriate technical interface is established to hand
off the call to an adjacent service provider's system.

Operators of wireless networks frequently agree to provide service to
customers from other compatible networks who are temporarily located in or
traveling through the operator's service area. Such customers are called
"roamers." Agreements among network operators allocate revenues received from
roamers. With automatic roaming, wireless customers are preregistered in certain
networks outside their home service area and receive service automatically while
they are roaming. Other roaming features permit calls to a customer to follow
the customer into different networks, so that the customer will continue to
receive calls in a different network just as if the customer were within his or
her service area.

Wireless customers generally are charged separately for monthly access, air
time, long-distance calls and custom-calling features (although custom-calling
features may be included in monthly access charges in certain pricing plans).
Wireless network operators pay fees to local exchange and long-distance
telephone companies for access to their networks and toll charges based on
standard or negotiated rates. When wireless operators provide service to roamers
from other networks, they generally charge roamer air-time usage rates, which
usually are higher than standard air-time usage rates for their own customers,
and additionally may charge daily access fees. Special, discounted rate roaming
arrangements, often between neighboring operators who wish to stimulate usage in
their respective territories, provide for reduced roaming fees and no daily
access fees.

TECHNOLOGY

With GSM technology, Aerial offers easy-to-use, interactive menu-driven
phones, and advanced features such as caller identification and a smart card, as
well as more complex features such as text messaging, which allows the GSM
handset to function as a two-way messaging device. GSM is not compatible with
other PCS or cellular technologies. However, compatibility can be achieved
through the use of phones that support multiple technologies. Aerial launched
its dual-mode service in April 1999 that enables roaming between GSM and the
existing analog cellular systems through the use of dual-mode phones.

In addition, Aerial has established roaming arrangements with over 75
international operators in more than 40 countries. This enables Aerial
customers, using their own phone numbers, to place calls anywhere within the
country they are visiting as well as return calls to the U.S.

To date, seventeen North American PCS companies are providing commercial GSM
service. GSM systems are currently in commercial operation in approximately
4,000 North American cities with

39
approximately 6 million customers. Aerial's customers are able to roam
substantially throughout the United States, either on other GSM-based PCS
networks or by using dual-mode phones that can also be used on existing cellular
networks.

Aerial is a member of the North American GSM Alliance LLC ("GSM Alliance"),
an all-digital wireless PCS network of U.S. and Canadian carriers. The GSM
Alliance was established to create a national network and develop seamless
wireless communications for customers, whether at home, away or abroad. The GSM
Alliance's collaborative efforts focus on serving the wireless customer
efficiently by addressing the areas of roaming, customer care, national
distribution and data communications. Aerial is also a limited partner of the
GSM Capital Limited Partnership. The partnership was formed to make investments
in companies mainly engaged in the wireless communications industry using the
GSM platform, that are in a development or expansion stage, or whose securities
trade in an organized market. Aerial is also a part of GSM North America, which
is the North American interest group for the GSM Association. Formed in 1995,
GSM North America brings together service providers and equipment manufacturers
to identify and resolve issues related to making GSM the premier PCS digital
technology.

SOURCES OF EQUIPMENT

Aerial does not manufacture any of the GSM network equipment, phones or
accessories ("equipment") used or anticipated to be used in its operations. The
equipment Aerial uses or anticipates to use is available from multiple sources,
and Aerial anticipates such equipment will continue to be available to Aerial in
the foreseeable future, consistent with normal manufacturing and delivery lead
times. As GSM uses an open system architecture, and due to the fact that GSM has
well-developed features, software systems and equipment that are available "off
the shelf", Aerial is able to design its GSM networks and systems without being
dependent upon any single manufacturing source. Nokia Telecommunications Inc.
has been Aerial's sole supplier of digital radio channel and switching
infrastructure equipment to date. Aerial's current phone vendors are Nokia
Mobile Phones, Inc., Ericsson Inc., Motorola Inc., and Mitsubishi Wireless
Communications, Inc.

PRODUCTS AND SERVICES

Aerial offers coverage in those areas of the PCS Markets where most of the
population lives and works. Continuing construction of its PCS networks will
provide coverage which, in combination with roaming services as described above,
is competitive with that of current cellular operators. Aerial provides roaming
capabilities through agreements with other GSM and cellular operators.

Aerial's two primary sources of revenues are similar to those available to
other cellular system providers. Service revenue primarily consists of charges
for access, airtime and value-added services provided to Aerial's retail
customers who use the network operated by Aerial, and charges for long-distance
calls made on Aerial's systems. Service revenue also consists of charges to
customers of other wireless carriers who use Aerial's PCS network when roaming
(outcollect roaming revenue). Equipment sales revenue consists of the sale of
phones and related accessories to retailers, independent agents and end user
customers. At December 31, 1999, Aerial had 422,900 customers. Service revenues
and equipment sales revenues totaled $195.1 million and $30.4 million,
respectively, for the year ended December 31, 1999.

Aerial provides the following services and features:

THE SMART CARD. GSM technology employs a Smart Card which contains a
microchip containing detailed information about a customer's service profile.
The Smart Card allows Aerial to initiate services or change a customer's service
package from a remote location. The Smart Card also allows customers to roam
onto other participating GSM-based networks by using their cards in phones
compatible with the local network.

40
FEATURE-RICH PHONES.  As part of its basic service package, Aerial provides
easy-to-use, interactive menu-driven phones that enable customers to utilize the
features available in a GSM network. These handsets primarily use words and
easy-to-use menus rather than numeric codes to operate handset functions such as
call-forwarding, call-waiting and text messaging.

SHORT TEXT MESSAGING. GSM technology allows for the capability to send and
receive short text messages, similar to two-way radio paging services. This
service allows Aerial to offer a quicker and less expensive form of wireless
communication when a full conversation is not necessary.

ENHANCED SECURITY. Aerial's service provides greater security from
eavesdropping and cloning than analog wireless service. Greater conversation
security is provided by the encryption code of the digital GSM signal. Greater
fraud protection is provided because GSM phones require the use of a Smart Card
with a sophisticated authentication scheme, the replication of which is
virtually impossible.

MARKETING AND DISTRIBUTION

Aerial's marketing objective is to create demand for its PCS service by
clearly differentiating its service offerings. Aerial believes the strength of
its marketing efforts is a key contributor to its success. Aerial's mass
marketing efforts emphasize the value of its services and its "fairness" to
customers and are supported by heavily promoting the Aerial brand name. This is
supported by a substantial advertising program.

Aerial offers its services and products through traditional cellular sales
channels as well as through new, lower cost channels which increase the quality
of the typical sale. Aerial utilizes traditional sales channels which include
mass merchandisers and retail outlets, company retail stores, sales agents and a
direct sales force. National distributors include Best Buy, Circuit City, Office
Depot, and Staples. Aerial currently also distributes its services and products
through over 100 company retail locations (mall stores, strip mall stores and
kiosks).

COMPETITION

The wireless telecommunications industry is experiencing significant
technological change, as evidenced by the increasing pace of digital upgrades to
existing analog cellular networks, evolving industry standards, ongoing
improvements in the capacity and quality of digital technology, shorter
development cycles for new products and enhancements, and changes in end-user
requirements and preferences. Accordingly, Aerial expects competition in the
wireless telecommunications business to be dynamic and intense as a result of
the entrance of new competitors and the development of new technologies,
products and services.

Aerial competes directly with up to five other PCS providers in each of its
PCS Markets. The other successful bidders in the FCC's broadband Block A and
Block B PCS auction in each of the six PCS Markets were PCS PrimeCo (Houston and
Tampa-St. Petersburg-Orlando), Sprint PCS (Minneapolis, Pittsburgh and Kansas
City) and AT&T Wireless Services, Inc. (Columbus). The existing cellular
providers in the PCS Markets, most of which have an infrastructure in place and
have been operational for a number of years, have in most cases, upgraded their
networks to provide comparable services in competition with Aerial. Principal
cellular providers in the PCS Markets are AT&T Wireless Services, Inc.,
BellSouth Mobility, Inc., GTE Mobile Communications Corporation, AirTouch
Communications, Inc., SBC Wireless, Bell Atlantic-NYNEX Mobile and Ameritech
Cellular. Additionally, Aerial competes with SMR provider Nextel
Communications, Inc. in each of its six PCS Markets.

Aerial also competes with other communications technologies that now exist,
such as paging and global satellite networks. In the future, cellular service
and PCS will also compete more directly with traditional landline telephone
service providers and with cable operators who expand into the offering of
traditional communications services over their cable systems.

All of such competition is intense. There can be no assurance that Aerial
will be able to compete successfully in this environment or that new
technologies and products that are more commercially effective than Aerial's
technologies and products will not be developed. In addition, many of Aerial's
competitors have substantially greater financial, technical, marketing, sales
and distribution resources

41
than those of Aerial and have significantly greater experience than Aerial in
testing new or improved telecommunications products and services and obtaining
regulatory approvals. Some competitors are expected to market other services,
such as cable television access, with their wireless telecommunications service
offerings. Several of Aerial's competitors are operating, or planning to
operate, through joint ventures and affiliation arrangements, wireless
telecommunications networks that cover most of the United States.

Aerial anticipates that market prices for two-way wireless services
generally will continue to decline in the future based on increased competition.
Aerial will compete to attract and retain customers principally on the basis of
services and enhancements, its customer service, the size and location of its
service areas and pricing. Aerial's ability to compete successfully will also
depend, in part, on its ability to anticipate and respond to various competitive
factors affecting the industry, including new services that may be introduced,
changes in consumer preferences, demographic trends, economic conditions and
discount pricing strategies by competitors, which could adversely affect
Aerial's operating margins.

REGULATION

REGULATORY ENVIRONMENT. The FCC regulates the licensing, construction,
operation and acquisition of wireless telecommunications systems in the United
States pursuant to the Communications Act of 1934, as amended, and the rules,
regulations and policies promulgated by the FCC thereunder. Under the
Communications Act, the FCC is authorized to allocate, grant and deny licenses
for PCS frequencies, establish regulations governing the interconnection of
Commercial Mobile Radio Service networks with wireline and other wireless
carriers, grant or deny license renewals and applications for transfer of
control or assignment of Commercial Mobile Radio Service licenses, and impose
fines and forfeitures for any violations of FCC regulations.

In addition, the Telecommunications Act, which amended the Communications
Act, mandates significant changes in existing telecommunications rules and
policies to promote competition, ensure the availability of telecommunications
services to all parts of the nation and to streamline regulation of the
telecommunications industry to remove regulatory burdens, as competition
develops, and makes regulation less necessary. The FCC promulgated and continues
to promulgate regulations governing construction and operation of wireless
carriers, licensing (including renewal of licenses) and technical standards for
the provision of PCS services under the Communications Act, and is implementing
the legislative objectives of the Telecommunications Act, as discussed below.

PCS LICENSING. The FCC established PCS service areas in the United States
and its possessions and territories based upon Rand McNally's market definition
of 51 MTAs comprised of 493 smaller BTAs. Each MTA consists of at least two
BTAs.

The FCC has allocated 120 MHz of radio spectrum in the 2 GHz band for
licensed broadband PCS services. The FCC divided the 120 MHz of spectrum into
six individual blocks, each of which is allocated to serve either MTAs or BTAs.
The spectrum allocation includes two 30 MHz blocks ("A" and "B" Blocks) licensed
for each of the 51 MTAs, one 30 MHz block ("C" Block) licensed for each of the
493 BTAs, and three 10 MHz blocks ("D," "E" and "F" Blocks) licensed for each of
the 493 BTAs. A PCS license has been awarded for each MTA and substantially all
of the BTAs in every block, for a total of more than 1,500 licenses. This means
that in any PCS service area as many as six licensees could be operating
separate PCS networks. Under the FCC's rules, a broadband PCS licensee may own
combinations of licenses with total aggregate spectrum coverage of up to 45 MHz
in a single geographic area, except for rural areas where the limit is 55 MHz.
The FCC adopted comprehensive rules that outlined the bidding process, described
the bidding application and payment process, established penalties for certain
bid withdrawals, default or disqualification and established regulatory
safeguards.

The grants of licenses to Aerial are conditioned upon timely compliance with
the FCC's build-out requirements, I.E., coverage of one-third of the population
of a PCS market within five years of initial license grant and coverage of
two-thirds of that population within ten years. Aerial has exceeded the buildout
requirements for both the five year and ten year stages for each of its MTAs.

42
The FCC also imposes a requirement that all licensees register and obtain
FCC registration numbers for all of their antenna towers which require prior FAA
clearance. All broadband PCS transmitting facilities of Aerial also must comply
with federal "radio frequency" radiation requirements. Aerial has complied with
and continues to comply with the antenna registration and radio frequency
radiation requirements.

The FCC enhanced 911 regulations require broadband PCS operators to be
capable of transmitting 911 calls from individuals with speech or hearing
disabilities through the use of "text telephone devices." Text telephone devices
currently, however, are not compatible with digital wireless systems such as
Aerial's. Consequently, on December 4, 1998, Aerial filed a petition with the
FCC requesting a waiver of the applicability of the text telephone devices
connectivity requirement to Aerial's digital system. On December 30, 1998, the
FCC granted Aerial, along with over 100 other wireless operators, a temporary
waiver of the regulation. Equipment manufacturers are developing hardware and
software that will make text telephone devices compatible with the digital
wireless technologies used by Aerial and other wireless service providers.
Aerial is working with manufacturers and other members of the wireless industry
in developing solutions for users of text telephone devices.

The enhanced 911 regulations also require broadband PCS operators to
determine the approximate location of persons making emergency calls. On
February 5, 1999, Aerial filed a petition requesting a waiver to clarify that
handset based location technology will meet the FCC's enhanced 911 location
requirements. A waiver will enable Aerial to be compliant with the location
requirements by introducing new handsets that have the capability of being
located rather than installing very expensive upgraded equipment throughout
Aerial's entire network. Aerial's waiver request and dozens of other wireless
operators' waiver requests were dismissed as moot by the FCC's Third Report and
Order in light of rules changes which require PCS systems to improve their
ability to locate wireless 911 callers during 2001 and 2002. On December 6,
1999, Aerial filed a Petition for Reconsideration of the FCC's Third Report and
Order. The Petition for Reconsideration is pending at the FCC.

The FCC licenses granted to Aerial are issued for a ten-year period expiring
June 23, 2005 and may be renewed. In the event challengers file competing
applications in response to any of Aerial's renewal filings, the FCC has rules
and policies providing that the application of the licensee seeking renewal will
be granted and the application of the challenger will not be considered in the
event that the broadband PCS licensee involved has (i) provided "substantial"
service, which is defined as "sound, favorable and substantially above a level
of mediocre service just minimally justifying renewal" and (ii) substantially
complied with FCC rules, policies and the Communications Act. Although Aerial is
unaware of any circumstances which would prevent the approval of any future
renewal applications, there can be no assurance that Aerial's licenses will be
renewed by the FCC in the future. Moreover, although revocation and involuntary
modification of licenses are extraordinary regulatory measures, the FCC has the
authority to restrict the operation of licensed facilities or revoke or modify
licenses.

The FCC has proceedings in process which could lead to the re-auction of PCS
licenses previously granted to auction winners who filed for bankruptcy and
could open up other frequency bands for wireless telecommunications and PCS-like
services. Such proceedings could result in additional wireless competition.

In addition, there are citizenship requirements, assignment requirements and
other federal regulations and requirements which may affect the business of
Aerial.

RECENT EVENTS. There are certain regulatory proceedings currently pending
before the FCC which are of particular importance to the broadband PCS industry.

The FCC has adopted a limited expansion of the obligation of cellular
carriers to serve the subscribers of broadband PCS providers, among others, even
though neither the subscribers or the PCS providers involved have a pre-existing
service relationship with such cellular carrier. Under these new policies,
broadband PCS providers may offer their subscribers phones which are capable of
operating over broadband PCS and cellular networks so that when their
subscribers are out of range of broadband PCS networks, they will be able to
obtain non-automatic access to cellular networks. The FCC expects that
implementation of these roaming capabilities will promote competition between

43
broadband PCS and cellular service providers. The FCC is considering whether
cellular, broadband PCS and certain specialized mobile radio providers instead
should be required to provide "automatic" roaming service to other providers
(i.e., carrier-to-carrier roaming service).

The FCC has adopted requirements which will make it possible for subscribers
to retain, subject to certain geographic and other limitations, their existing
telephone numbers when they switch from one service provider to another. This
numbering portability will include switching between LEC and other wireline
providers, between wireless service providers and between LEC/wireline and
wireless providers. LECs, in the 100 largest MSAs, had implementation deadlines
by the end of 1998 at those switches which received specific requests for
numbering portability. The FCC has extended the compliance date for cellular,
broadband PCS, and certain other wireless providers to November 2002.

Also, in August 1999, the FCC added certain additional capabilities
necessary to meet requirements under the Communications Assistance for Law
Enforcement Act, which are to become applicable by September 2001. Also, issues
remain as to when carriers may obtain reimbursement from the federal government
for upgrades related to such requirements. Aerial will work diligently to comply
with all such related requirements in cooperation with industry groups and
standard setting bodies.

The FCC has recently taken action in proceedings:

- To ensure that the customers of wireless providers, among other carriers,
will receive complete, accurate, and understandable bills.

- To establish safeguards to protect against unauthorized access to customer
information (though these rules have been overturned, at least
temporarily, by court order).

- To increase to 55 megahertz ("MHz") in rural areas its 45 MHz "cap" on the
amount of spectrum which entities under common ownership and control may
hold in a single wireless market and to relax its related cellular cross
ownership restriction.

- To require improved access to telecommunications facilities by persons
with disabilities.

The FCC also has pending proceedings:

- To implement a wireless billing option under which wireline customers who
call wireless customers could be charged for the wireless "airtime" as
opposed to the wireless customer receiving the call, as is the case at
present ("calling party pays").

- To implement requirements for wireless providers to set interstate
interexchange rates in each state at levels no higher than the rates
charged to subscribers in any other state.

- To set national policy for the allocation by state public utilities
commissions of telephone numbers to wireline and wireless carriers.

Aerial intends to monitor such proceedings and comply with new federal
requirements as they become applicable.

In January 2000, the FCC took an action which may have an impact on both
cellular and PCS licensees. Pursuant to a congressional directive, the FCC
adopted service rules for licensing the commercial use of 30 MHz of spectrum in
the 746-764 MHz and 776-794 MHz spectrum bands. The spectrum is to be auctioned,
beginning in June 2000, for six regional service areas, in 20 and 10 MHz blocks,
to provide a wide range of wireless services. There will be no eligibility
restrictions on participation in the auctions for this spectrum. Cellular and
PCS carriers and other entities will be eligible to bid in the auction. Use of
the spectrum by licensees selected in the auction may be affected by the
presence of incumbent broadcast licensees on some of the auctioned frequencies
through at least December 31, 2006.

The FCC is also continuing to implement the Telecommunications Act. The
Telecommunications Act provides that implementing its legislative objectives
will be the task of the FCC, the state public utilities commissions and a
Federal-State Joint Board. Much of this implementation has and continues to be

44
proceeding in numerous, concurrent proceedings with aggressive deadlines. Aerial
cannot predict the full extent and nature of developments of the
Telecommunications Act, which will depend, in part, upon interrelationships
among state and federal regulators.

The primary purpose and effect of the Telecommunications Act is to open all
telecommunications markets to competition, including local telephone service.
The Telecommunications Act makes most direct or indirect state and local
barriers to competition unlawful. It directs the FCC to preempt all inconsistent
state and local laws and regulations, after notice and comment proceedings. It
also enables electric and other utilities to engage in telecommunications
service through qualifying subsidiaries.

Only narrow powers over competitive entry are left to state and local
authorities. Each state retains the power to impose competitively neutral
requirements that are consistent with the Telecommunications Act's universal
service provision and necessary for universal services, public safety and
welfare, continued service quality and consumer rights.

The Telecommunications Act establishes principles and a process for
implementing a modified "universal service" policy. This policy seeks
nationwide, affordable service and access to advanced telecommunications and
information services. It calls for reasonably comparable urban and rural rates
and services. The Telecommunications Act also requires universal service to
schools, libraries and rural health facilities at discounted rates. In a series
of orders adopted in 1997, the FCC established universal service support
mechanisms which require telecommunications providers, including all wireless
carriers, to contribute. Aerial has made the required universal service
worksheet filings and makes the required periodic payments.

Since enactment, the FCC has adopted orders implementing the local
competition provisions of the Telecommunications Act. The FCC found that
broadband PCS and certain other wireless providers that are entitled to
reciprocal compensation, may not be charged for LEC-originated traffic or for
code opening/per-number fees, and may obtain LEC interconnection subject to the
terms of the Telecommunications Act. Appeals were taken to the United States
Supreme Court from these FCC orders by numerous parties alleging that the FCC
has exceeded its statutory mandate, among other matters. On January 25, 1999,
the U.S. Supreme Court upheld the FCC's general jurisdiction to implement the
local competition provisions of the Telecommunications Act.

STATE AND LOCAL REGULATION. The scope of state and local regulatory
authority covers such matters as the terms and conditions of interconnection
between LECs and wireless carriers with respect to intrastate services, customer
billing information and practices, billing disputes, other consumer protection
matters, facilities construction issues and transfers of control, among other
matters. In these areas, particularly the terms and conditions of
interconnection between LECs and wireless providers, the FCC and state
regulatory authorities share regulatory responsibilities with respect to
interstate and intrastate issues, respectively.

The FCC has pending numerous petitions for preemption of state and local
regulations which allege such regulations prohibit or impair the provision of
interstate or intrastate telecommunications services. It has also requested
public comment on a petition requesting preemption of moratoria imposed by state
and local governments on siting of telecommunications facilities, the imposition
of state taxes on the gross receipts of Commercial Mobile Radio Service
providers and other proposed state taxes based on the asset value of Commercial
Mobile Radio Service licenses awarded by the FCC. The FCC has been actively
involved in educating state and local regulatory and zoning authorities as to
the prohibitions in the Telecommunications Act against the creation of
unreasonable and discriminatory zoning, taxation or other barriers to new
wireless providers.

The FCC is required to forbear from applying any statutory or regulatory
provision that is not necessary to keep telecommunications rates and terms
reasonable or to protect consumers. A state may not apply a statutory or
regulatory provision that the FCC decides to forbear from applying. In addition,
the FCC must review its telecommunications regulations every two years and
change any that are no longer necessary.

Aerial and its subsidiaries have been and intend to remain active
participants in proceedings before the FCC and before state regulatory and
zoning authorities. Proceedings with respect to the foregoing

45
policy issues before the FCC and state regulatory authorities could have
significant impacts on the competitive market structure among wireless providers
and the relationships between wireless providers and other carriers. Aerial is
unable to predict the scope, pace, or financial impact of policy changes which
could be adopted in these proceedings.

EMPLOYEES

TDS enjoys satisfactory employee relations. As of December 31, 1999,
10,150 persons were employed by TDS (2,000 of whom were employed at Aerial), 162
of whom are represented by unions.

- --------------------------------------------------------------------------------

ITEM 2. PROPERTIES

The property of TDS consists principally of switching and cell site
equipment related to cellular telephone operations; telephone lines, central
office equipment, telephone instruments and related equipment, and land and
buildings related to telephone operations. As of December 31, 1999, TDS's
property, plant and equipment, net of accumulated depreciation, totaled
approximately $2.1 billion, $1.2 billion at U.S. Cellular and $0.9 billion at
TDS Telecom.

The plant and equipment of TDS is maintained in good operating condition and
is suitable and adequate for TDS's business operations. The properties of the
operating telephone subsidiaries are subject to the lien of the mortgages
securing the funded debt of such companies. TDS leases many of its offices and
transmitter sites used in its cellular business and owns substantially all of
its central office buildings, local administrative buildings, warehouses, and
storage facilities used in its telephone operations. All of TDS's cell and
transmitter sites and telephone lines are located either on private or public
property. Locations on private land are by virtue of easements or other
arrangements.

- --------------------------------------------------------------------------------

ITEM 3. LEGAL PROCEEDINGS

TDS is involved in a number of legal proceedings before the FCC and various
state and federal courts. Management does not believe that any such proceeding
should have a material adverse impact on the financial position or results of
operations of TDS. See Item 1. Business--"Discontinued Operations."

- --------------------------------------------------------------------------------

ITEM 4. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS

No matter was submitted to a vote of security holders during the fourth
quarter of 1999.

46
- --------------------------------------------------------------------------------
PART II
- --------------------------------------------------------------------------------

ITEM 5. MARKET FOR REGISTRANT'S COMMON EQUITY AND RELATED STOCKHOLDER MATTERS

Incorporated by reference from Exhibit 13, Annual Report sections entitled
"TDS Stock and Dividend Information" and "Market Price per Common Share by
Quarter."

- --------------------------------------------------------------------------------

ITEM 6. SELECTED FINANCIAL DATA

Incorporated by reference from Exhibit 13, Annual Report section entitled
"Selected Consolidated Financial Data," except for ratios of earnings to fixed
charges, which are incorporated herein by reference from Exhibit 12 to this
Annual Report on Form 10-K.

- --------------------------------------------------------------------------------

ITEM 7. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS
OF OPERATIONS

Incorporated by reference from Exhibit 13, Annual Report section entitled
"Management's Discussion and Analysis of Results of Operations and Financial
Condition."

- --------------------------------------------------------------------------------

ITEM 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Incorporated by reference from Exhibit 13, Annual Report section entitled
"Management's Discussion and Analysis of Results of Operations and Financial
Condition" under the caption "Market Risk."

- --------------------------------------------------------------------------------

ITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

Incorporated by reference from Exhibit 13, Annual Report sections entitled
"Consolidated Statements of Operations," "Consolidated Statements of Cash
Flows," "Consolidated Balance Sheets," "Consolidated Statements of Common
Stockholders' Equity," "Notes to Consolidated Financial Statements,"
"Consolidated Quarterly Income Information (Unaudited)," and "Report of
Independent Public Accountants."

- --------------------------------------------------------------------------------

ITEM 9. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND
FINANCIAL DISCLOSURE

None.

47
- --------------------------------------------------------------------------------
PART III
- --------------------------------------------------------------------------------

ITEM 10. DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT

Incorporated by reference from Proxy Statement sections entitled "Election
of Directors" and "Executive Officers."

- --------------------------------------------------------------------------------

ITEM 11. EXECUTIVE COMPENSATION

Incorporated by reference from Proxy Statement section entitled "Executive
Compensation" except for the information specified in Item 402(a)(8) of
Regulation S-K under the Securities Exchange Act of 1934, as amended.

- --------------------------------------------------------------------------------

ITEM 12. BENEFICIAL OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT

Incorporated by reference from Proxy Statement sections entitled "Security
Ownership of Management" and "Principal Shareholders."

- --------------------------------------------------------------------------------

ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS

Incorporated by reference from Proxy Statement section entitled "Certain
Relationships and Related Transactions."

48
- --------------------------------------------------------------------------------
PART IV
- --------------------------------------------------------------------------------

ITEM 14. EXHIBITS, FINANCIAL STATEMENT SCHEDULES AND REPORTS ON FORM 8-K

The following documents are filed as a part of this report:

(a) (1) Financial Statements

<TABLE>
<S> <C>
Consolidated Statements of Operations....................... Annual Report*
Consolidated Statements of Cash Flows....................... Annual Report*
Consolidated Balance Sheets................................. Annual Report*
Consolidated Statements of Common Stockholders' Equity...... Annual Report*
Notes to Consolidated Financial Statements.................. Annual Report*
Consolidated Quarterly Income Information (Unaudited)....... Annual Report*
Report of Independent Public Accountants.................... Annual Report*
</TABLE>

- ------------------------

* Incorporated by reference from Exhibit 13.

(2) Schedules

<TABLE>
<CAPTION>
LOCATION
---------
<S> <C> <C>
Report of Independent Public Accountants on Financial Statement Schedules........... page S-1
I. Condensed Financial Information of Registrant-Balance Sheets
as of December 31, 1999 and 1998 and Statements of
Operations and Statements of Cash Flows for each of the
Three Years in the Period Ended December 31, 1999........... page S-2
II. Valuation and Qualifying Accounts for each of the Three
Years in the Period Ended December 31, 1999................. page S-7
</TABLE>

All other schedules have been omitted because they are not applicable or not
required because the required information is shown in the financial statements
or notes thereto.

(3) Exhibits

The exhibits set forth in the accompanying Index to Exhibits are filed as a
part of this Report. The following is a list of each management contract or
compensatory plan or arrangement required to be filed as an exhibit to this form
pursuant to Item 14(c) of this Report.

49
<TABLE>
<CAPTION>
EXHIBIT
NUMBER DESCRIPTION
- --------------------- -----------
<S> <C>
10.1 Salary Continuation Agreement for LeRoy T. Carlson dated
May 20, 1977, as amended May 22, 1981 and May 25, 1984 is
hereby incorporated by reference to TDS's Registration
Statement on Form S-2, No. 2-92307.

10.2(a) Supplemental Benefit Agreement for LeRoy T. Carlson dated
March 21, 1980, as amended March 20, 1981 is hereby
incorporated by reference to an exhibit to TDS's
Registration Statement on Form S-7, No. 2-74615.

10.2(b) Memorandum of Amendment to Supplemental Benefit Agreement
dated May 28, 1991 is hereby incorporated by reference to
Exhibit 10.2(b) to TDS's Annual Report Form 10-K for the
year ended December 31, 1991.

10.3 Description of Terms of Letter Agreement with Sandra L.
Helton dated August 7, 1998 is hereby incorporated by
reference to Exhibit 10.3 to TDS's Annual Report on
Form 10-K for the year ended December 31, 1998.

10.4(a) 1988 Stock Option and Stock Appreciation Rights Plan of TDS
is hereby incorporated by reference to Exhibit A to TDS's
definitive Notice of Annual Meeting and Proxy Statement
dated March 31, 1988.

10.4(b) Amendment #1 to 1988 Stock Option and Stock Appreciation
Rights Plan of TDS is hereby incorporated by reference to
Exhibit 10.7(b) to TDS's Annual Report on Form 10-K for the
year ended December 31, 1993.

10.4(c) Amendment #2 to 1988 Stock Option and Stock Appreciation
Rights Plan of TDS is hereby incorporated by reference to
Exhibit 10.7(c) to TDS's Annual Report on Form 10-K for the
year ended December 31, 1993.

10.5 Telephone and Data Systems, Inc. 1994 Long-Term Incentive
Plan is hereby incorporated by reference to Exhibit 99.1 to
TDS's Registration Statement on Form S-8 (Registration
No. 33-57257).

10.6(a) Telephone and Data Systems, Inc. 1998 Long-Term Incentive
Plan is hereby incorporated by reference to Exhibit D to
TDS's Proxy Statement/Prospectus dated March 24, 1998, which
was part of TDS's Registration Statement on Form S-4
(Registration No. 333-42535).

10.6(b) Amendment No. 1 to Telephone and Data Systems, Inc. 1998
Long Term Incentive Plan, filed herewith.

10.7 Amended and Restated Supplemental Executive Retirement Plan
of TDS is hereby incorporated by reference to Exhibit 10.7
to TDS's Annual Report on Form 10-K for the year ended
December 31, 1998.

10.11 Supplemental Benefit Agreement between United States
Cellular Corporation and H. Donald Nelson is hereby
incorporated by reference to an exhibit to United States
Cellular Corporation's Registration Statement on Form S-1
(Registration No. 33-16975).

10.12 Deferred Compensation Agreement for H. Donald Nelson dated
July 15, 1996, is hereby incorporated by reference to
Exhibit 10.1 to TDS's Quarterly Report in Form 10-Q for the
quarterly period ended September 30, 1996.

10.13 Stock Option and Stock Appreciation Rights Plan, is hereby
incorporated by reference to Exhibit B to United States
Cellular Corporation's definitive Notice of Annual Meeting
and Proxy Statement dated April 15, 1991, as filed with the
Commission on April 16, 1991.

10.14 Summary of 1999 Bonus Program for the Senior Corporate Staff
on United States Cellular Corporation is hereby incorporated
by reference to Exhibit 10.11 to United States Cellular
Corporation's Annual Report on Form 10-K for the year ended
December 31, 1999.
</TABLE>

50
<TABLE>
<CAPTION>
EXHIBIT
NUMBER DESCRIPTION
- --------------------- -----------
<S> <C>
10.15 United States Cellular Corporation 1994 Long-Term Incentive
Plan is hereby incorporated by reference to Exhibit 99.1 to
United States Cellular Corporation's Registration Statement
on Form S-8 (Registration No. 33-57255).

10.16 United States Cellular Corporation 1996 Senior Executive
Stock Bonus and Restricted Stock Award Plan is hereby
incorporated by reference to Exhibit 99.1 to United States
Cellular Corporation's Registration Statement on Form S-8
(Registration No. 333-19405).

10.17 United States Cellular Corporation Special Retention
Restricted Stock Award Plan is hereby incorporated by
reference to Exhibit 99.1 to United States Cellular
Corporation's Registration Statement on Form S-8
(Registration No. 333-23861).

10.18 United States Cellular Corporation 1998 Long-Term Incentive
Plan is hereby incorporated by reference to Exhibit 99.4 to
United States Cellular Corporation's Registration Statement
on Form S-8 (Registration No. 333-57063).

10.19 Form of 1997 Special Retention Restricted Stock Awards is
hereby incorporated by reference to Exhibit 99.2 to United
States Cellular Corporation's Registration Statement on
Form S-8 (Registration No. 333-57063).

10.20 TDS Compensation Plan for Non-Employee Directors is hereby
incorporated by reference to Exhibit 99.1 of TDS's
Registration Statement on Form S-8 (Registration
No. 333-23947).

10.21 Executive Deferred Compensation Agreement for James
Barr III dated January 1, 1998, is hereby incorporated by
reference to Exhibit 10.15 to TDS's Annual Report on
Form 10-K for the year ended December 31, 1997.

10.22 Form of TDS Telecommunications Corporation Phantom Stock
Option Incentive Agreement between TDS Telecommunications
Corporation and James Barr III is hereby incorporated by
reference to Exhibit 10.16 to TDS's Annual Report on
Form 10-K for the year ended December 31, 1997.
</TABLE>

(b) Reports on Form 8-K filed during the quarter ended December 31, 1999.

None

51
REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS
ON FINANCIAL STATEMENT SCHEDULES

To the Stockholders and Board of Directors of Telephone and Data Systems, Inc.:

We have audited, in accordance with auditing standards generally accepted in
the United States, the consolidated financial statements included in Telephone
and Data Systems, Inc. and Subsidiaries Annual Report incorporated by reference
in this Form 10-K, and have issued our report thereon dated January 26, 2000.
Our audits were made for the purpose of forming an opinion on the basic
consolidated financial statements taken as a whole. The financial statement
schedules listed in Item 14(a)(2) are the responsibility of TDS's management and
are presented for purposes of complying with the Securities and Exchange
Commission's rules and are not part of the basic consolidated financial
statements. These financial statement schedules have been subjected to the
auditing procedures applied in the audits of the basic consolidated financial
statements and, in our opinion, fairly state in all material respects the
financial data required to be set forth therein in relation to the basic
consolidated financial statements taken as a whole.

ARTHUR ANDERSEN LLP

Chicago, Illinois
January 26, 2000

S-1
SCHEDULE I--CONDENSED FINANCIAL INFORMATION OF REGISTRANT
TELEPHONE AND DATA SYSTEMS, INC. (PARENT)
BALANCE SHEETS

ASSETS

<TABLE>
<CAPTION>
DECEMBER 31,
-----------------------
1999 1998
---------- ----------
(DOLLARS IN THOUSANDS)
<S> <C> <C>
CURRENT ASSETS
Cash and cash equivalents................................. $ 32,910 $ 264
Temporary investments..................................... 166 --
Notes receivable from affiliates.......................... 80,341 91,354
Accounts receivable
Due from subsidiaries................................... 7,409 21,379
Other................................................... 7,445 3,838
Prepaid income taxes...................................... 26,114 5,064
Other current assets...................................... 5,622 2,621
---------- ----------
160,007 124,520
---------- ----------
INVESTMENT IN SUBSIDIARIES.................................. 2,933,405 2,588,893
---------- ----------
OTHER INVESTMENTS
Notes receivable from affiliates.......................... -- 6,050
Marketable equity securities.............................. 136,742 --
Minority interests and other investments.................. 33,152 27,724
---------- ----------
169,894 33,774
---------- ----------
PROPERTY AND EQUIPMENT
Property and equipment, net of accumulated depreciation... 15,425 19,778
---------- ----------
OTHER ASSETS AND DEFERRED CHARGES
Net deferred income taxes................................. 155,944 165,752
Debt issuance expenses.................................... 12,685 13,350
Development and acquisition expenses...................... 143 426
Other..................................................... 388 483
---------- ----------
169,160 180,011
---------- ----------
NET ASSETS OF DISCONTINUED OPERATIONS....................... 246,801 471,990
---------- ----------
$3,694,692 $3,418,966
========== ==========
</TABLE>

The Notes to Consolidated Financial Statements, included in the Annual
Report, are an integral part of these statements.

S-2
SCHEDULE I--CONDENSED FINANCIAL INFORMATION OF REGISTRANT
TELEPHONE AND DATA SYSTEMS, INC. (PARENT)
BALANCE SHEETS
LIABILITIES AND STOCKHOLDERS' EQUITY

<TABLE>
<CAPTION>
DECEMBER 31,
-----------------------
1999 1998
---------- ----------
(DOLLARS IN THOUSANDS)
<S> <C> <C>
CURRENT LIABILITIES
Current portion of long-term debt......................... $ 258 $ 248
Notes payable............................................. -- 170,889
Notes payable to affiliates............................... 373,744 179,606
Accounts payable
Due to subsidiaries--Income Taxes....................... 25,043 12,854
Due to subsidiaries--Other.............................. 4,544 3,037
Other................................................... 14,924 7,637
Accrued interest.......................................... 15,895 16,527
Other..................................................... 4,445 5,346
---------- ----------
438,853 396,144
---------- ----------
DEFERRED LIABILITIES AND CREDITS
Postretirement benefits obligation other than pensions.... 844 779
Other..................................................... 12,714 7,717
---------- ----------
13,558 8,496
---------- ----------
LONG-TERM DEBT, excluding current portion (Note A).......... 440,895 441,153
LONG-TERM DEBT, due to affiliates (Note B).................. 309,280 309,280
---------- ----------
750,175 750,433
---------- ----------
PREFERRED SHARES............................................ 9,005 25,985
---------- ----------
COMMON STOCKHOLDERS' EQUITY
Common Shares, par value $.01 per share, respectively;
authorized 100,000,000 shares; issued and outstanding
55,411,746 and 54,988,498 shares, respectively........... 554 550
Series A Common Shares, par value $.01 per share,
respectively; authorized 25,000,000 shares; issued and
outstanding 6,958,691 and 6,949,904 shares,
respectively............................................. 70 69
Capital in excess of par value............................ 1,897,402 1,882,710
Accumulated other comprehensive income from
subsidiaries............................................. 179,071 75,609
Treasury Shares, at cost, 1,237,207 and 761,220 shares,
respectively............................................. (102,975) (29,439)
Retained earnings......................................... 508,979 308,409
---------- ----------
2,483,101 2,237,908
---------- ----------
$3,694,692 $3,418,966
========== ==========
</TABLE>

The Notes to Consolidated Financial Statements, included in the Annual
Report, are an integral part of these statements.

S-3
SCHEDULE I--CONDENSED FINANCIAL INFORMATION OF REGISTRANT
TELEPHONE AND DATA SYSTEMS, INC. (PARENT)
STATEMENTS OF OPERATIONS

<TABLE>
<CAPTION>
YEAR ENDED DECEMBER 31,
---------------------------------
1999 1998 1997
--------- --------- ---------
(DOLLARS IN THOUSANDS)
<S> <C> <C> <C>
Operating service revenues................................ $ 66,600 $ 69,768 $ 67,349
Cost of sales and operating expenses...................... 75,103 76,238 72,249
--------- --------- ---------
Net operations.......................................... (8,503) (6,470) (4,900)
--------- --------- ---------
Other income
Interest income received from affiliates................ 23,343 19,344 14,321
Gain on sale of investments............................. -- 7,164 10,307
Other, net.............................................. (2,658) (10,182) (4,612)
--------- --------- ---------
20,685 16,326 20,016
--------- --------- ---------
Income before interest and income taxes................... 12,182 9,856 15,116
Interest expense.......................................... 84,965 78,002 49,422
Income tax credit......................................... (66,796) (79,394) (39,423)
--------- --------- ---------
Corporate operations...................................... (5,987) 11,248 5,117
Equity in net income of subsidiaries and other
investments............................................. 320,138 190,151 94,628
--------- --------- ---------
Net income from continuing operations..................... 314,151 201,399 99,745
--------- --------- ---------
Discontinued operations, net of tax....................... (84,190) (136,991) (109,294)
--------- --------- ---------
Net income (loss)......................................... $ 229,961 $ 64,408 $ (9,549)
========= ========= =========
</TABLE>

The Notes to Consolidated Financial Statements, included in the Annual
Report, are an integral part of these statements.

Note A: The annual requirements for principal payments on long-term debt are
$258,000, $270,000, $283,000, $32.1 million, and $7.5 million for the years
2000 through 2004, respectively.

Note B: In 1998, TDS Capital II, a subsidiary trust ("Capital II") of TDS,
issued 6,000,000 of its 8.04% Company-Obligated Mandatorily Redeemable
Preferred Securities (the "1998 Preferred Securities") at $25 per Preferred
Security. Net proceeds totaled $144.9 million and were used to reduce
short-term debt. The sole asset of TDS Capital II is $154.6 million
principal amount of TDS's 8.04% Subordinated Debentures due March 31, 2038.

In 1997, TDS Capital I, a subsidiary trust ("Capital I") of TDS, issued
6,000,000 of its 8.5% Company-Obligated Mandatorily Redeemable Preferred
Securities (the "1997 Preferred Securities") at $25 per Preferred Security.
Net proceeds totaled $144.8 million and were used to reduce short-term
debt. The sole asset of TDS Capital I is $154.6 million principal amount of
TDS's 8.5% Subordinated Debentures due December 31, 2037.

The obligations of TDS Capital I and II under the 1998 Preferred Securities
and 1997 Preferred Securities (the "Preferred Securities") issued by TDS
Capital I and II are fully and unconditionally guaranteed by TDS. However,
TDS's obligations are subordinate and junior in right of payment to certain
other indebtedness of TDS. TDS has the right to defer payments of interest
on the Subordinated Debentures by extending the interest payment period, at
any time, for up to 20 consecutive quarters. If interest payments on the
Subordinated Debentures are so deferred, distributions on the Preferred
Securities will also be deferred. During any deferral, distributions will
continue to accrue with interest thereon. In addition, during any such
deferral, TDS may not declare or pay any dividend or other distribution on,
or redeem or purchase, any of its common stock.

S-4
The 8.04% and 8.5% Subordinated Debentures are redeemable by TDS, in whole
or in part, from time to time, on or after March 31, 2003, and
November 18, 2002, respectively, or, in whole but not in part, at any time
in the event of certain income tax circumstances. If the Subordinated
Debentures are redeemed, TDS Capital I and II must redeem Preferred
Securities on a pro rata basis having an aggregate liquidation amount equal
to the aggregate principal amount of the Subordinated Debentures so
redeemed. In the event of the dissolution, winding up or termination of TDS
Capital I and II, the holders of Preferred Securities will be entitled to
receive, for each Preferred Security, a liquidation amount of $25 plus
accrued and unpaid distributions thereon to the date of payment, unless, in
connection with the dissolution, winding up or termination, Subordinated
Debentures are distributed to the holders of the Preferred Securities.

Note C: On September 17, 1999, the Board of Directors of Telephone and Data
Systems, Inc. decided not to pursue a spin-off of Aerial Communications,
Inc. ("Aerial"), an 82.1%-owned subsidiary of TDS, and approved a plan of
merger between Aerial and VoiceStream Wireless Corporation ("VoiceStream").
As a result of the merger, Aerial shareholders will receive 0.455
VoiceStream common shares for each share of Aerial stock they own, subject
to adjustment in certain circumstances. Aerial public shareholders will
have a right to elect to receive $18 in cash in lieu of shares of
VoiceStream. The parties anticipate that the merger will be tax-free to
Aerial shareholders that elect to receive VoiceStream stock. This merger is
subject to the approval of the Federal Communications Commission. The
merger is expected to close in the second quarter of 2000.

As a result of the board's approval of the plan, the consolidated financial
statements and supplemental data of TDS have been adjusted to reflect the
results of operations and net assets of Aerial as discontinued operations
in accordance with generally accepted accounting principles. Financial
statements for prior periods have been reclassified to conform to current
year presentation. TDS expects to recognize a net gain on the ultimate
disposition of Aerial and, accordingly, has deferred recognition of
Aerial's net operating losses of $44.2 million from September 18, 1999
through December 31, 1999.

S-5
SCHEDULE I--CONDENSED FINANCIAL INFORMATION OF REGISTRANT
TELEPHONE AND DATA SYSTEMS, INC. (PARENT)
STATEMENTS OF CASH FLOWS

<TABLE>
<CAPTION>
YEAR ENDED DECEMBER 31,
---------------------------------
1999 1998 1997
--------- --------- ---------
(DOLLARS IN THOUSANDS)
<S> <C> <C> <C>
CASH FLOWS FROM OPERATING ACTIVITIES
Net income from continuing operations..................... $ 314,151 $ 201,399 $ 99,745
Add (Deduct) adjustments to reconcile net income to net
cash provided by operating activities
Depreciation and amortization........................... 9,859 10,365 9,508
Gain on sale of investments............................. -- (7,164) (10,307)
Deferred taxes.......................................... (43,839) (126,354) (53,068)
Equity in net income of subsidiaries and other
investments............................................ (320,138) (190,151) (94,628)
Other noncash expense................................... 31 (394) (211)
Change in accounts receivable........................... (6,949) 27,352 (15,992)
Change in accounts payable.............................. 11,643 6,810 3,612
Change in accrued taxes................................. (4,106) 9,310 2,151
Change in other assets and liabilities.................. 3,401 6,058 677
--------- --------- ---------
(35,947) (62,769) (58,513)
--------- --------- ---------
CASH FLOWS FROM FINANCING ACTIVITIES
Long-term debt borrowings................................. -- 343,127 144,788
Repayment of long-term debt............................... (248) (239) (735)
Change in notes payable................................... (170,889) (354,996) 368,658
Change in notes payable to affiliates..................... 194,138 183,216 (47,990)
Change in notes receivable from affiliates................ (4,096) (130,152) (87,021)
Change in advances to affiliates.......................... -- -- 1,616
Common stock issued....................................... 7,991 3,391 5,225
Redemption of preferred shares............................ (531) (367) (359)
Dividends from subsidiaries............................... 7,973 38,391 22,022
Dividends paid............................................ (29,390) (28,488) (27,192)
Repurchase of Common Shares............................... (69,014) -- (69,942)
Purchase of subsidiary common stock....................... -- (9,107) (9,801)
--------- --------- ---------
(64,066) 44,776 299,269
--------- --------- ---------
CASH FLOWS FROM INVESTING ACTIVITIES
Acquisitions
Value of assets acquired................................ (2,450) (14,425) (47,851)
Common Shares issued.................................... -- 10,028 42,685
Preferred Shares issued................................. -- -- 3,000
--------- --------- ---------
Net cash paid for acquisitions........................ (2,450) (4,397) (2,166)
Capital expenditures...................................... (6,703) 6,662 (20,957)
Payment to subsidiary under contract agreement............ -- (28,696) --
Proceeds from sale of investments......................... -- 5,382 20,886
Investments in subsidiaries............................... 179 262 (2,301)
Other investments......................................... (60) 184 2,851
Change in temporary investments........................... (166) 132 22
--------- --------- ---------
(9,200) (20,471) (1,665)
--------- --------- ---------
CASH FLOWS FROM DISCONTINUED OPERATIONS..................... 141,859 38,457 (238,961)
--------- --------- ---------
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS........ 32,646 (7) 130
CASH AND CASH EQUIVALENTS
Beginning of period....................................... 264 271 141
--------- --------- ---------
End of period............................................. $ 32,910 $ 264 $ 271
========= ========= =========
</TABLE>

The Notes to Consolidated Financial Statements, included in the Annual
Report, are an integral part of these statements.

S-6
TELEPHONE AND DATA SYSTEMS, INC. AND SUBSIDIARIES
SCHEDULE II-VALUATION AND QUALIFYING ACCOUNTS

<TABLE>
<CAPTION>
BALANCE AT CHARGED TO CHARGED TO BALANCE AT
BEGINNING OF COSTS AND OTHER END OF
DESCRIPTION PERIOD EXPENSES ACCOUNTS DEDUCTIONS PERIOD
- ----------- ------------ ---------- ---------- ---------- ----------
COLUMN A COLUMN B COLUMN C-1 COLUMN C-2 COLUMN D COLUMN E
<S> <C> <C> <C> <C> <C>
(DOLLARS IN THOUSANDS)
FOR THE YEAR ENDED DECEMBER 31, 1999
Deducted from deferred state tax
asset:
For unrealized net operating
losses............................ $(27,779) $ 2,778 $ (78) $ -- $(25,079)
Deducted from accounts receivable:
For doubtful accounts............ (6,732) (26,938) -- 23,145 (10,525)
FOR THE YEAR ENDED DECEMBER 31, 1998
Deducted from deferred state tax
asset:
For unrealized net operating
losses............................ (15,602) (1,023) (11,154) -- (27,779)
Deducted from accounts receivable:
For doubtful accounts............ (7,850) (21,254) -- 22,372 (6,732)
FOR THE YEAR ENDED DECEMBER 31, 1997
Deducted from deferred state tax
asset:
For unrealized net operating
losses............................ (13,367) 877 (3,112) -- (15,602)
Deducted from accounts receivable:
For doubtful accounts............ $ (6,090) $(31,855) $ -- $30,095 $ (7,850)
</TABLE>

S-7
SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities
Exchange Act of 1934, the registrant has duly caused this report to be signed on
its behalf by the undersigned, thereunto duly authorized.

<TABLE>
<S> <C> <C>
TELEPHONE AND DATA SYSTEMS, INC.

By: /s/ LEROY T. CARLSON
-----------------------------------------
LeRoy T. Carlson
CHAIRMAN

By: /s/ LEROY T. CARLSON, JR.
-----------------------------------------
LeRoy T. Carlson, Jr.
PRESIDENT, (CHIEF EXECUTIVE OFFICER)

By: /s/ SANDRA L. HELTON
-----------------------------------------
Sandra L. Helton
EXECUTIVE VICE PRESIDENT--FINANCE
(CHIEF FINANCIAL OFFICER)

By: /s/ D. MICHAEL JACK
-----------------------------------------
D. Michael Jack
VICE PRESIDENT AND CONTROLLER
(PRINCIPAL ACCOUNTING OFFICER)
</TABLE>

Dated March 29, 2000

Pursuant to the requirements of the Securities Exchange Act of 1934, this
report has been signed below by the following persons on behalf of the
registrant and in the capacities and on the dates indicated.

<TABLE>
<CAPTION>
SIGNATURE TITLE DATE
--------- ----- ----
<C> <S> <C>
/s/ LEROY T. CARLSON
------------------------------------------- Director March 29, 2000
LeRoy T. Carlson

/s/ LEROY T. CARLSON, JR.
------------------------------------------- Director March 29, 2000
LeRoy T. Carlson, Jr.

/s/ SANDRA L. HELTON
------------------------------------------- Director March 29, 2000
Sandra L. Helton

/s/ JAMES BARR III
------------------------------------------- Director March 29, 2000
James Barr III

/s/ WALTER C.D. CARLSON
------------------------------------------- Director March 29, 2000
Walter C.D. Carlson

/s/ LETITIA G.C. CARLSON
------------------------------------------- Director March 29, 2000
Letitia G.C. Carlson
</TABLE>
<TABLE>
<CAPTION>
SIGNATURE TITLE DATE
--------- ----- ----
<C> <S> <C>
/s/ HERBERT S. WANDER
------------------------------------------- Director March 29, 2000
Herbert S. Wander

/s/ DONALD C. NEBERGALL
------------------------------------------- Director March 29, 2000
Donald C. Nebergall

/s/ GEORGE W. OFF
------------------------------------------- Director March 29, 2000
George W. Off

/s/ MARTIN L. SOLOMON
------------------------------------------- Director March 29, 2000
Martin L. Solomon

/s/ KEVIN A. MUNDT
------------------------------------------- Director March 29, 2000
Kevin A. Mundt

/s/ MURRAY L. SWANSON
------------------------------------------- Director March 29, 2000
Murray L. Swanson
</TABLE>
INDEX TO EXHIBITS

<TABLE>
<CAPTION>
EXHIBIT
NO. DESCRIPTION OF DOCUMENT
- --------------------- -----------------------
<C> <S>
3.1 Restated Certificate of Incorporation, as amended, are
hereby incorporated by reference to Exhibit 3.1 to TDS's
Report on Form 8-A/A filed on July 10, 1998.

3.2 Restated By-laws, as amended, filed herewith.

4.1 Restated Certificate of Incorporation, as amended, are
hereby incorporated by reference to Exhibit 3.1 to TDS's
Report on Form 8-A/A filed on July 10, 1998.

4.2 Restated By-laws, as amended, filed herewith as
Exhibit 3.2.

4.3(a) The Indenture between TDS and Harris Trust and Savings Bank,
Trustee, dated February 1, 1991, under which TDS's
Medium-Term Notes are issuable, is hereby incorporated by
reference to TDS's Current Report on Form 8-K filed on
February 19, 1991.

4.3(b) Form of First Supplemental Indenture with Harris Trust and
Savings Bank is hereby incorporated by reference to
Exhibit 4.1(b) of Post Effective Amendment No. 1 to
Form S-3 (Registration No. 33-68456).

4.4(a) Revolving Credit Agreement, dated as of June 7, 1996, among
TDS and the First National Bank of Boston, as agent and
LaSalle National Bank and Toronto Dominion (Texas), Inc. as
co-agents, is hereby incorporated by reference to the
registrant's Form 8-K dated July 1, 1996.

4.4(b) Amendment No. 1 to Revolving Credit Agreement, filed
herewith.

4.4(c) Assignment and Assumption Agreement with respect to
Revolving Credit Agreement, filed herewith.

4.5 The Trust Indenture dated as of November 4, 1996 between
Aerial Communications, Inc. as issuer, TDS as guarantor, and
The First National Bank of Chicago, as trustee for Aerial's
Series A Zero Coupon Notes, is hereby incorporated by
reference to Exhibit 4.1 to Aerial's Current Report on
Form 8-K filed on November 29, 1996.

4.6 The Trust Indenture, dated as of February 5, 1998, between
Aerial Communications, Inc. as issuer, TDS as guarantor, and
The First National Bank of Chicago, as trustee for Aerial's
Series B Zero Coupon Notes, is hereby incorporated by
reference to Exhibit 4.1 to Aerial's Current Report on
Form 8-K filed on April 29, 1998.

4.7(a) The Amended and Restated Declaration of Trust, dated
November 18, 1997, by and among TDS, as Sponsor, the Trust,
The First National Bank of Chicago, as Property Trustee,
First Chicago Delaware, Inc., as Delaware Trustee and the
Regular Trustees named therein, is hereby incorporated by
reference to Exhibit 4.1 to TDS's Current Report on
Form 8-K filed on December 2, 1997, dated November 18, 1997.

4.7(b) The Amended and Restated Declaration of Trust, dated
February 10, 1998, by and among TDS, as Sponsor, the Trust,
The First National Bank of Chicago, as Property Trustee,
First Chicago Delaware, Inc., as Delaware Trustee and the
Regular Trustees named therein, is hereby incorporated by
reference to Exhibit 4.1 to TDS's Current Report on
Form 8-K filed on April 28, 1998, dated February 10, 1998.

4.7(c) Form of First Supplemental Indenture to Amended and Restated
Declaration of Trust relating to assumption of TDS Delaware
is hereby incorporated by reference to Exhibit 4.7 of Post
Effective Amendment No. 1 to Form S-3 (Registration
No. 333-38355).

4.8(a) The Subordinated Indenture, dated October 15, 1997, by and
between TDS and the First National Bank of Chicago, as
Trustee under which the Trust Originated Preferred
Securities are issuable, is hereby incorporated by reference
to Exhibit 4.3 to TDS's Current Report on Form 8-K filed on
December 2, 1997, dated November 18, 1997.
</TABLE>

E-1
<TABLE>
<CAPTION>
EXHIBIT
NO. DESCRIPTION OF DOCUMENT
- --------------------- -----------------------
<C> <S>
4.8(b) The Supplemental Indenture dated November 18, 1997, by and
between TDS and the First National Bank of Chicago, as
Trustee under which the Trust Originated Preferred
Securities are issuable, is hereby incorporated by reference
to Exhibit 4.4 to TDS's Current Report on Form 8-K filed on
December 2, 1997, dated November 18, 1997.

4.8(c) The Second Supplemental Indenture, dated as of February 10,
1998, by and among TDS and The First National Bank of
Chicago, as Debt Trustees, is hereby incorporated by
reference to Exhibit 4.3 to TDS's Current Report on
Form 8-K filed on April 28, 1998, dated February 10, 1998.

4.8(d) Form of Third Supplemental Indenture to Subordinated
Indenture relating to assumption by TDS Delaware is hereby
incorporated by reference to Exhibit 4.9 of Post Effective
Amendment No. 1 to Form S-3 (Registration No. 333-38355).

4.9(a) The Preferred Securities Guarantee Agreement, dated as of
November 18, 1997, by and among TDS and The First National
Bank of Chicago, as Guarantee Trustee for the benefit of the
holders of Trust Preferred Securities of the Trust, is
hereby incorporated by reference to Exhibit 4.2 to TDS's
Current Report on Form 8-K filed on December 2, 1997, dated
November 18, 1997.

4.9(b) The Preferred Securities Guarantee Agreement, dated as of
February 10, 1998, by and among TDS and The First National
Bank of Chicago, as Guarantee Trustee for the benefit of the
holders of Trust Preferred Securities of the Trust, is
hereby incorporated by reference to Exhibit 4.2 to TDS's
Current Report on Form 8-K filed on April 28, 1998, dated
February 10, 1998.

4.9(c) Form of First Supplemental Indenture to Preferred Securities
Guarantee Agreement relating to assumption by TDS Delaware
is hereby incorporated by reference to Exhibit 4.8 of Post
Effective Amendment No. 1 to Form S-3 (Registration
No. 333-38355).

9.1(a) Voting Trust Agreement, dated as of June 30, 1989, is hereby
incorporated by reference to an exhibit to Post-Effective
Amendment No. 3 to TDS's Registration Statement on
Form S-1, No. 33-12943.

9.1(b) Amendment dated as of May 9, 1991 to the Voting Trust
Agreement dated as of June 30, 1989, is hereby incorporated
by reference to Exhibit 9.2 to TDS's Annual Report on
Form 10-K for the year ended December 31, 1991.

9.1(c) Amendment dated as of November 20, 1992, to the Voting Trust
Agreement dated as of June 30, 1989, as amended, is hereby
incorporated by reference to Exhibit 9.1(c) to TDS's Annual
Report on Form 10-K for the year ended December 31, 1992.

9.1(d) Amendment dated as of May 22, 1998, to the Voting Trust
Agreement dated as of June 30, 1989, as amended, is hereby
incorporated by reference to Exhibit 99.3 to TDS's Current
Report on Form 8-K filed on June 5, 1998.

10.1 Salary Continuation Agreement for LeRoy T. Carlson dated
May 20, 1977, as amended May 22, 1981 and May 25, 1984 is
hereby incorporated by reference to TDS's Registration
Statement on Form S-2, No. 2-92307.

10.2(a) Supplemental Benefit Agreement for LeRoy T. Carlson dated
March 21, 1980, as amended March 20, 1981, is hereby
incorporated by reference to an exhibit to TDS's
Registration Statement on Form S-7, No. 2-74615.

10.2(b) Memorandum of Amendment to Supplemental Benefit Agreement
dated as of May 28, 1991, is hereby incorporated by
reference to Exhibit 10.2(b) to TDS's Annual Report on
Form 10-K for the year ended December 31, 1991.

10.3 Description of Terms of Letter Agreement with Sandra L.
Helton dated August 7, 1998 is hereby incorporated by
reference to Exhibit 10.3 to TDS's Annual Report on
Form 10-K for the year ended December 31, 1998.
</TABLE>

E-2
<TABLE>
<CAPTION>
EXHIBIT
NO. DESCRIPTION OF DOCUMENT
- --------------------- -----------------------
<C> <S>
10.4(a) 1988 Stock Option and Stock Appreciation Rights Plan of TDS,
is hereby incorporated by reference to Exhibit A to TDS's
definitive Notice of Annual Meeting and Proxy Statement
dated March 31, 1988.

10.4(b) Amendment #1 to 1988 Stock Option and Stock Appreciation
Rights Plan of TDS, is hereby incorporated by reference to
Exhibit 10.7(b) to TDS's Annual Report on Form 10-K for the
year ended December 31, 1993.

10.4(c) Amendment #2 to 1988 Stock Option and Stock Appreciation
Rights Plan of TDS, is hereby incorporated by reference to
Exhibit 10.7(c) to TDS's Annual Report on Form 10-K for the
year ended December 31, 1993.

10.5 Telephone and Data Systems, Inc. 1994 Long-Term Incentive
Plan is hereby incorporated by reference to Exhibit 99.1 to
TDS's Registration Statement on Form S-8 (Registration
No. 33-57257).

10.6(a) Telephone and Data Systems, Inc. 1998 Long-Term Incentive
Plan is hereby incorporated by reference to Exhibit D to
TDS's Proxy Statement/Prospectus dated March 24, 1998 which
was part of TDS's Registration Statement on Form S-4
(Registration No. 333-42535).

10.6(b) Amendment No. 1 to Telephone and Data Systems, Inc. 1998
Long-term Incentive Plan, filed herewith.

10.7 Amended and Restated Supplemental Executive Retirement Plan
is hereby incorporated by reference to Exhibit 10.7 to TDS's
Annual Report on Form 10-K for the year ended December 31,
1998.

10.8 Securities Loan Agreement, dated June 13, 1995, between TDS
and Merrill Lynch & Co. is hereby incorporated by reference
to Exhibit 99.1 to the Form 8-K dated June 16, 1995 of
United States Cellular Corporation.

10.9 Registration Rights Agreement among TDS, Merrill Lynch & Co.
and United States Cellular Corporation is hereby
incorporated by reference to Exhibit 99.2 to the Form 8-K
dated June 16, 1995 of United States Cellular Corporation.

10.10 Common Share Delivery Arrangement Agreement among TDS,
Merrill Lynch & Co. and United States Cellular Corporation
is hereby incorporated by reference to Exhibit 99.3 to the
Form 8-K dated June 16, 1995 of United States Cellular
Corporation.

10.11 Supplemental Benefit Agreement between United States
Cellular Corporation and H. Donald Nelson is hereby
incorporated by reference to an exhibit to United States
Cellular Corporation's Registration Statement on Form S-1
(Registration No. 33-16975).

10.12 Deferred Compensation Agreement for H. Donald Nelson dated
July 15, 1996, is hereby incorporated by reference to
Exhibit 10.1 to TDS's Quarterly Report on Form 10-Q for the
quarter ended September 30, 1996.

10.13 Stock Option and Stock Appreciation Rights Plan, is hereby
incorporated by reference to Exhibit B to United States
Cellular Corporation's definitive Notice of Annual Meeting
and Proxy Statement dated April 15, 1991, as filed with the
Commission on April 16, 1991.

10.14 Summary of 1999 Bonus Program for the Senior Corporate Staff
on United States Cellular Corporation is hereby incorporated
by reference to Exhibit 10.11 to United States Cellular
Corporation's Annual Report on Form 10-K for the year ended
December 31, 1999.

10.15 United States Cellular Corporation 1994 Long-Term Incentive
Plan is hereby incorporated by reference to Exhibit 99.1 to
United States Cellular Corporation's Registration Statement
on Form S-8 (Registration No. 33-57255).
</TABLE>

E-3
<TABLE>
<CAPTION>
EXHIBIT
NO. DESCRIPTION OF DOCUMENT
- --------------------- -----------------------
<C> <S>
10.16 United States Cellular Corporation 1996 Senior Executive
Stock Bonus and Restricted Stock Award Plan is hereby
incorporated by reference to Exhibit 99.1 to United States
Cellular Corporation's Registration Statement on Form S-8
(Registration No. 333-19405).

10.17 United States Cellular Corporation Special Retention
Restricted Stock Award Plan is hereby incorporated by
reference to Exhibit 99.1 to United States Cellular
Corporation's Registration Statement on Form S-8
(Registration No. 333-23861).

10.18 United States Cellular Corporation 1998 Long-Term Incentive
Plan is hereby incorporated by reference to Exhibit 99.4 to
United States Cellular Corporation's Registration Statement
on Form S-8 (Registration No. 333-57063).

10.19 Form of 1997 Special Retention Restricted Stock Awards is
hereby incorporated by reference to Exhibit 99.2 to United
States Cellular Corporation's Registration Statement on
Form S-8 (Registration No. 333-57063).

10.20 TDS Compensation Plan for Non-Employee Directors is hereby
incorporated by reference to Exhibit 99.1 of TDS's
Registration Statement on Form S-8 (Registration
No. 333-23947).

10.21 Executive Deferred Compensation Agreement for James
Barr III dated January 1, 1998 is hereby incorporated by
reference to Exhibit 10.15 to TDS's Annual Report on
Form 10-K for the year ended December 31, 1997.

10.22 Form of TDS Telecommunications Corporation Phantom Stock
Option Incentive Agreement between TDS Telecommunications
Corporation and James Barr III is hereby incorporated by
reference to Exhibit 10.16 to TDS's Annual Report on
Form 10-K for the year ended December 31, 1997.

10.23 Credit Agreement dated June 30, 1998, by and between Nokia
Telecommunications Inc. and Aerial Communications, Inc., is
hereby incorporated by reference to Exhibit 99.1 of Aerial
Communications, Inc.'s Form 8-K dated June 30, 1998 and
filed on November 9, 1998.

10.24 Investment Agreement by and between Aerial Communications,
Inc., TDS, Aerial Operating Company, Inc. and Sonera Ltd. is
hereby incorporated by reference to Exhibit 99.2 of the
Aerial Form 8-K dated September 8, 1998 and filed on
September 17, 1998.

10.25 Registration Rights Agreement by and between Aerial
Communications, Inc. and Sonera Ltd. is hereby incorporated
by reference to Exhibit 99.3 of the Aerial Form 8-K dated
September 8, 1998 and filed on September 17, 1998.

10.26 Joint Venture Agreement by and between Aerial
Communications, Inc., Aerial Operating Company, Inc. and
Sonera Corporation U.S., is hereby incorporated by reference
to Exhibit 99.4 of the Aerial Form 8-K dated September 8,
1998 and filed on September 17, 1998.

10.27 Supplemental Agreement by and between Aerial Communications,
Inc., Aerial Operating Company, Inc. and Sonera Ltd., is
hereby incorporated by reference to Exhibit 99.5 of the
Aerial Form 8-K dated September 8, 1998 and filed on
September 17, 1998.

10.28 Agreement and Plan of Reorganization dated September 17,
1999 among VoiceStream Wireless Corporation, VoiceStream
Wireless Holding Corporation, VoiceStream Subsidiary III
Corporation, Aerial Communications, Inc., and TDS is hereby
incorporated by reference to Exhibit 99.2 of TDS's Form 8-K
dated September 17, 1999 and filed on September 28,1999.

10.29 Stockholder Agreement dated September 17, 1999 by and
between Telephone and Data Systems, Inc. and stockholder of
Aerial Communications, Inc., and VoiceStream Wireless
Corporation, and VoiceStream Wireless Holding Corporation is
hereby incorporated by reference to Exhibit 99.3 of TDS's
Form 8-K dated September 17, 1999 and filed on
September 28,1999.
</TABLE>

E-4
<TABLE>
<CAPTION>
EXHIBIT
NO. DESCRIPTION OF DOCUMENT
- --------------------- -----------------------
<C> <S>
10.30 Indemnity Agreement dated September 17, 1999 among
VoiceStream Wireless Corporation, VoiceStream Wireless
Holding Corporation, Aerial Communications, Inc., Aerial
Operating Company, Inc., and TDS is hereby incorporated by
reference to Exhibit 99.4 of TDS's Form 8-K dated
September 17, 1999 and filed on September 28,1999.

10.31 Debt/Equity Replacement Agreement dated as of September 17,
1999 made by and among TDS, Aerial Communications, Inc.,
Aerial Operating Company, Inc., VoiceStream Wireless
Corporation and VoiceStream Wireless Holding Corporation is
hereby incorporated by reference to Exhibit 99.5 of TDS's
Form 8-K dated September 17, 1999 and filed on
September 28,1999.

10.32 Parent Stockholder Agreement dated as of September 17, 1999
by and among Aerial Communications, Inc., TDS, VoiceStream
Wireless Corporation, VoiceStream Wireless Holding
Corporation and certain individuals and entities set forth
therein, is hereby incorporated by reference to
Exhibit 99.6 of TDS's Form 8-K dated September 17, 1999 and
filed on September 28,1999.

10.33 Settlement Agreement and Release dated as of September 17,
1999 by and among Sonera Ltd., Sonera Corporation U.S., TDS,
Aerial Communications, Inc., and Aerial Operating Company,
Inc. is hereby incorporated by reference to Exhibit 99.7 of
TDS's Form 8-K dated September 17, 1999 and filed on
September 28,1999.

11 Statement regarding computation of per share earnings
(included in Footnote 4 to financial statements in
Exhibit 13).

12 Statements regarding computation of ratios.

13 Incorporated portions of 1999 Annual Report to Security
Holders.

21 List of Subsidiaries of TDS.

23 Consent of independent public accountants.

27.1 Financial Data Schedule for the year ended December 31, 1999

27.2 Financial Data Schedule for the three months ended
March 31, 1999 and the six months ended June 30, 1999, as
restated.

27.3 Financial Data Schedule for the three months ended
March 31, 1998, the six months ended June 30, 1998, the nine
months ended September 30, 1998 and the year ended
December 31, 1998, as restated.

27.4 Financial Data Schedule for the year ended December 31,
1997, as restated.
</TABLE>

E-5
[LOGO]
TELEPHONE AND DATA SYSTEMS, INC.

30 North LaSalle Street
Chicago, Illinois 60602
312/630-1900