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FORM 10-K
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, DC 20549

(X) ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF
THE SECURITIES EXCHANGE ACT OF 1934

For The Fiscal Year Ended December 31, 1999

OR

( ) TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF
THE SECURITIES EXCHANGE ACT OF 1934

For The Transition Period From _________ to _________

Commission File Number 1-1105

AT&T CORP.

A NEW YORK I.R.S. EMPLOYER
CORPORATION NO. 13-4924710

32 Avenue of the Americas, New York, New York 10013-2412
Telephone Number 212-387-5400

Securities registered pursuant to Section 12(b) of the Act: See attached
SCHEDULE A.

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 con-tained 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. [ ]

At February 29, 2000, the aggregate market value of voting stock held by
non-affiliates was approximately $157 billion. At February 29, 2000,
3,194,755,604 shares of AT&T common stock, 1,181,420,568 shares of Class A
Liberty Media Group tracking stock and 103,117,226 shares of Class B Liberty
Media Group tracking stock were outstanding.

DOCUMENTS INCORPORATED BY REFERENCE
(1) Portions of the registrant's annual report to shareholders for the year
ended December 31, 1999 (Part II)
(2) Portions of the registrant's definitive proxy statement dated March 27,
2000 issued in connection with the annual meeting of shareholders (Part III)



SCHEDULE A

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

Name of each exchange on
Title of each class which registered

Common Shares # New York, Boston, Chicago,
(Par Value $1 Per Share) #### Philadelphia and Pacific
# Stock Exchanges
#
#
Class A Liberty Media Group Tracking #
Shares (common, Par Value $1 Per Share) #
#### New York Stock Exchange
Class B Liberty Media Group Tracking #
Shares (common, Par Value $1 Per Share) #
#
#
#
Thirty-Five Year 5-1/8% Debentures, due #
April 1, 2001 #
#
Ten Year 7-1/8% Notes, due January 15, 2002 #
#
Three Year 61/2% Notes due September 15, 2002 #
#
Five Year 5 5/8% Notes due March 15, 2004 #
#
Ten Year 6-3/4% Notes, due April 1, 2004 #
#
Ten Year 7% Notes, due May 15, 2005 #
#
Twelve Year 7-1/2% Notes, due June 1, 2006 ###### New York Stock Exchange
#
Twelve Year 7-3/4% Notes, due March 1, 2007 #
#
Ten Year 6% Notes due March 15, 2009 #
#
Thirty Year 8-1/8% Debentures, due #
January 15, 2022 #
#
Thirty Year 8.35% Debentures, due #
January 15, 2025 #
#
Thirty-Two Year 8-1/8% Debentures, due #
July 15, 2024 #
#
Thirty Year 61/2% Notes due March 15, 2029 #
#
Forty Year 8-5/8% Debentures, due #
December 1, 2031 #



TABLE OF CONTENTS

PART I

Item Description Page

1. Business . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2. Properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
3. Legal Proceedings . . . . . . . . . . . . . . . . . . . . . . . . . 36
4. Submission of Matters to a Vote of Security-Holders . . . . . . . . 37

PART II

Description

5. Market for Registrant's Common Equity and Related Stockholder
Matters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
6. Selected Financial Data . . . . . . . . . . . . . . . . . . . . . . 39
7. Management's Discussion and Analysis of Financial Condition and
Results of Operations . . . . . . . . . . . . . . . . . . . . . . 39
8. Financial Statements and Supplementary Data . . . . . . . . . . . . 39
9. Changes in and Disagreements with Accountants on Accounting and
Financial Disclosure . . . . . . . . . . . . . . . . . . . . . . . 39

PART III

Description

10. Directors and Executive Officers of the Registrant . . . . . . . . . 39
11. Executive Compensation . . . . . . . . . . . . . . . . . . . . . . . 39
12. Security Ownership of Certain Beneficial Owners and Management . . . 39
13. Certain Relationships and Related Transactions . . . . . . . . . . . 39

PART IV

Description

14. Exhibits, Financial Statement Schedule, and Reports on Form 8-K . . 40

See page 38 for "Executive Officers of the Registrant."



PART I

ITEM 1. BUSINESS.

GENERAL

AT&T Corp. was incorporated in 1885 under the laws of the State of New
York and has its principal executive offices at 32 Avenue of the Americas, New
York, New York 10013-2412 (telephone number 212-387-5400).

On March 9, 1999, AT&T completed the acquisition of
Tele-Communications, Inc. (TCI) in a merger. In the merger, AT&T acquired all
the business and assets of the TCI Group (now referred to as AT&T Broadband),
which consisted primarily of TCI's domestic cable and telecommunications
operations, as well as TCI's interest in At Home Corporation (@Home) in exchange
for approximately 664 million shares of Common Stock. AT&T Common Stock
continues to represent an interest in the business and assets of the historical
AT&T together with those assets acquired in the merger.

In addition, at the time of the merger TCI combined Liberty Media
Group, its programming arm, and TCI Ventures Group, its technology investments
unit, to form the new Liberty Media Group. The shareowners of the new Liberty
Media Group were issued separate tracking stock rather than traditional Common
Stock by AT&T Corp. in exchange for the shares held in Liberty Media Group and
TCI Ventures Group. Under the tracking stock arrangement, the Liberty Media
Group's earnings and losses will be excluded from earnings available to the
holders of Common Stock and the Liberty Media Group's businesses and assets will
be managed by a separate operating Board of Directors. As a result, although the
Liberty Media Group is wholly owned by AT&T Corp., it is accounted for as an
investment under the equity method of accounting in the consolidated financial
statements of AT&T Corp. since AT&T does not have a "controlling financial
interest" in the Liberty Media Group.

Consequently, throughout this document, references to AT&T or the
Company refer to the businesses, results or assets attributable to the Common
Stock; references to Liberty Media refer to the businesses, results or assets
attributable to the Liberty Media Group tracking stock; and references to AT&T
Corp. refer to the combined legal entity. References herein to AT&T Common
Shares, Common Shares, AT&T Common Stock or Common Stock excludes the Liberty
Media Group tracking stock.

On March 14, 2000 the AT&T shareholders approved amendments to the AT&T
certificate of incorporation that would permit AT&T to create a separate class
of its common stock, the AT&T Wireless Group tracking stock, which would track
the performance of our wireless business. As of the date of filing this Form
10-K, no shares of the AT&T Wireless Group tracking stock were outstanding.

AT&T

AT&T is among the world's communications leaders, providing voice, data
and video communications services to large and small businesses, consumers and
government entities. AT&T and its subsidiaries furnish domestic and
international long distance, regional, local and wireless communications
services, cable television and Internet communications services. AT&T also
provides billing, directory, and calling card services to support its
communications business.



AT&T's primary lines of business are business services; consumer
services; broadband services; and wireless services. In addition, AT&T's other
lines of business include network management and professional services through
AT&T Solutions and international operations and ventures.

Internet users can access information about AT&T and its services at
www.att.com. Our web site is not a part of this Form 10-K.

DEVELOPMENT OF BUSINESS

Separation

During 1999 AT&T continued the transformation of its business begun in
1996 when AT&T separated its business into three publicly held stand-alone
companies: the current AT&T, focused on communications and information services;
Lucent Technologies Inc. (Lucent), focused on communications systems and
technology; and NCR Corporation (NCR), focused on transaction-intensive
computing. AT&T distributed to its shareowners all of the shares AT&T owned of
Lucent on September 30, 1996 and all of the shares of NCR on December 31, 1996.

Asset Sales

Following the separation, AT&T focused on its core businesses and
disposed of assets and businesses that were not strategic. In October 1996, AT&T
completed the sale of its majority interest in AT&T Capital Corporation (leasing
services business). In 1997, AT&T completed the sales of AT&T Skynet (satellite
services), AT&T Tridom (satellite data and video communications services), and
its submarine systems business, as well as its investment in DirectTV
(direct-broadcast television service and DSS equipment business). In addition,
in 1998 AT&T sold AT&T Universal Card Services, Inc. (credit card services
business), American Transtech Inc. (customer care services), its investment in
LIN Television Corporation (commercial television broadcasting), and its
investment in SmarTone Telecommunications Holdings Limited (a wireless joint
venture in Hong Kong). In 1999, AT&T sold its interest in Wood-TV (commercial
television broadcasting), AT&T Language Line Services (over the phone
interpretation business) and ACC Corp.'s operations in Europe
(telecommunications services).

TCG Acquisition

During 1998, AT&T engaged in a series of transactions to further
transform the Company from one dominated by a single product, domestic long
distance telecommunications, to a fully integrated, any distance, broadband
communications service provider. In July 1998, AT&T completed the merger with
Teleport Communications Group (TCG) pursuant to which each share of TCG was
exchanged for AT&T Common Stock in an all-stock transaction. TCG was the largest
competitive local exchange carrier (CLEC) in the United States, offering
comprehensive telecommunications services in major metropolitan markets
throughout the United States. TCG provides a broad array of telecommunications
services, including basic local exchange services, enhanced switch services,
Internet services, disaster avoidance services and video channel transmission
services, aimed at addressing high-volume business customers.



TCI Acquisition

In the TCI merger, which closed on March 9, 1999, AT&T issued AT&T
Common Stock for each share of TCI Group Series A tracking stock and TCI Group
Series B tracking stock. In addition, AT&T Corp. issued newly created Liberty
Media Group Class A or Class B tracking stock for each outstanding TCI Liberty
Media Group Class A or Class B tracking stock and each outstanding TCI Ventures
Group Class A or Class B tracking stock. In the merger, AT&T also exchanged AT&T
Common Stock or Liberty Media Group tracking stock for shares of TCI convertible
preferred stock and made a cash payment in lieu of any fractional AT&T Common
Share or Liberty Media Group tracking share.

IBM Global Network Acquisition

On April 30, 1999, AT&T completed the first phase of its acquisition of
the IBM Global Network business (renamed AT&T Global Network Services or AGNS)
by obtaining the IBM Global Network assets in the United States. Under the terms
of the agreement, AT&T acquired the global network of IBM for approximately $5
billion, and the two companies entered into outsourcing agreements with each
other. IBM is outsourcing a significant portion of its global networking needs
to AT&T, and AT&T is outsourcing certain applications-processing and
data-center-management operations to IBM. AGNS serves the networking needs of
several hundred large global companies, tens of thousands of mid-sized
businesses and more than one million individual Internet users in 59 countries.
About 5,300 IBM employees joined AT&T as part of the acquisition. AGNS has more
than 1,300 dial-up points of presence and dedicated access from more than 850
cities in 59 countries. AGNS offers business customers innovative services and
worldwide operations and support, including in-country, native-language support
personnel. The acquisition occurred in phases throughout 1999 as legal and
regulatory requirements were met in each of the countries in which the business
operates. As of December 31, 1999, operations in over 70 countries have been
transferred from IBM to AT&T, representing more than 99% of the contract
revenue. We are awaiting regulatory approval in the remaining countries and
expect to be providing service to customers operating in over 80 countries by
the end of the first quarter of 2000.

Vanguard Acquisition

On May 3, 1999, AT&T acquired Vanguard Cellular Systems, Inc.
(Vanguard), an independent operator of wireless telephone systems in the United
States with over 700,000 subscribers and which operates in markets with a
population of approximately 6.9 million. Vanguard served 26 markets in the
Eastern United States. Consummation of the acquisition resulted in the issuance
of approximately 12.6 million shares of AT&T common stock and the payment of
approximately $485 million in cash.

Comcast Corporation Exchange

On May 4, 1999, AT&T and Comcast announced an agreement to exchange
various cable systems, which are designed to improve each company's geographic
coverage by better clustering its systems. The agreement will result in a net
addition to Comcast of approximately 750,000 subscribers. Because Comcast will
receive more subscribers than it is contributing in the exchange, it will pay
AT&T consideration having a value of approximately $4,500 per added subscriber
for a total value of $3.0 billion to $3.5 billion. Comcast has also agreed to
offer AT&T-branded telephony in all of its markets, subject to certain
conditions. The foregoing agreements are subject to completion of the proposed
AT&T/MediaOne merger and other regulatory and legal approvals.



MediaOne Group, Inc. Acquisition

On May 6, 1999, AT&T and MediaOne Group, Inc. (MediaOne) entered into a
definitive merger agreement. October 21, 1999, shareholders of MediaOne voted in
favor of the proposed merger between AT&T and MediaOne. Under the agreement,
each MediaOne shareholder is entitled to elect to receive either cash or AT&T
common stock in exchange for their MediaOne shares, subject to the limitation
that the aggregate consideration will consist of $30.85 per share in cash plus
0.95 of a share of AT&T stock for every MediaOne share. In addition, the cash
portion of the AT&T offer will be increased to offset up to a 10% decline in
AT&T's closing stock price of $57 per share on April 21, 1999, the date the
offer was extended. This will maintain a value of $85 per share for every
MediaOne share, provided AT&T's stock trades between $57 per share and $51.30
per share. The additional amount of cash that may be received is limited to
$5.42 per share. AT&T estimates that we will issue approximately 600 million
shares in the transaction. The merger, which remains subject to regulatory and
other approvals, is expected to close in the second quarter of 2000.

MetroNet Merger

On June 1, 1999, AT&T Canada Corp. merged with MetroNet Communications
Corp., Canada's largest competitive local exchange carrier. Under the terms of
the merger agreement, AT&T received 31 percent of the equity interest and 23
percent of the voting interest in the combined entity in exchange for AT&T
Canada Corp. and ACC TelEnterprises Ltd. In addition, AT&T agreed to purchase
all of the remaining shares at the greater of the then appraised fair market
value or the accreted minimum price, which initially is C$37.50 per share
accreting after June 30, 2000 at a rate of 16% per annum, compounded quarterly.
If the acquisition is not completed by June 30, 2003, those shares, along with
AT&T's shares, would be sold through an auction process and AT&T will make whole
the other shareholders for the amount they would have been entitled to if AT&T
had purchased the shares. The completion of the acquisition is subject to the
condition that AT&T is permitted to acquire the shares under Canada's foreign
ownership restrictions. AT&T may acquire the shares prior to a change in the
ownership restrictions by developing a structure that addresses such ownership
restrictions.

Cox Communications, Inc. Exchange

On July 6, 1999, AT&T and Cox Communications, Inc. (Cox) signed an
agreement whereby AT&T would redeem approximately 50.3 million shares of AT&T
common stock held by Cox in exchange for cable television systems serving
approximately 312,000 customers, our interest in certain investments and
approximately $750 million in other consideration, including cash. Based on the
closing price of AT&T's stock on July 6, 1999, the transaction is valued at
approximately $2.8 billion. The transaction closed in March 2000.

AT&T/BT Joint Investments

On August 16, 1999, AT&T completed its sale to BT of 30% of AT&T's
stake in AT&T Canada for C$600 million. In addition, BT has agreed to purchase
30% of the shares AT&T will be acquiring from the other stockholders in
connection with the MetroNet merger, subject to BT's right to cap its purchase
at C$1.65 billion.



In addition, on August 16, 1999, AT&T and BT completed their joint
purchase of 33.3% of the equity interest and 30.6% of the voting interest in
Rogers Cantel Mobile Communications Inc., Canada's largest mobile company
serving more than two million customers coast to coast, for a total purchase
price of C$1.4 billion. AT&T and BT hold their ownership position through a
newly established and jointly owned entity.

BT Joint Venture

On January 6, 2000 AT&T and British Telecommunications plc (BT) created
a global venture to serve the communications needs of multinational companies
and the international calling needs of businesses around the world. The venture,
named Concert, is owned equally by AT&T and BT and combined transborder assets
and operations of each company, including their existing international networks,
their international traffic, their transborder products for business customers
- -- including an expanding set of Concert services -- and AT&T and BT's
multinational accounts in selected industry sectors.

BUSINESS SERVICES

Business Services provides a variety of global communications services
including long distance, local and data and IP networking to large domestic and
multinational businesses, small and medium-sized businesses, and government
agencies. Business units within this group provide regular and custom long
distance and local communications services, data transmission and Internet
services, 500 services, toll-free or 800 and 888 services, 900 services, private
line services, software defined network services (SDN), asynchronous transfer
mode (ATM) and Internet protocol (IP) technology based services, integrated
services digital network (ISDN) technology based services, electronic mail,
electronic data interchanges, and enhanced facsimile services.

AT&T also provides special long distance services, including AT&T
Calling Card services, special calling plans and the Company's domestic and
international operator services. AT&T provides communications services
internationally, including transaction services, global networks, network
management and value added network services (i.e., services offered over
communications transmission facilities that employ computer processing
applications).

Business Services has a dedicated sales force through which it markets
its voice and data communication services. Sales forces are divided into
geographic markets, and in each market focus on large, multinational
corporations, small businesses, government markets, and value-added resellers
and other wholesalers. Business Services employs full service support teams to
provide significant customer support and service to ensure customer satisfaction
and retention.

Business Services offers its regulated services in accordance with
applicable tariffs filed with the Federal Communications Commission (FCC) and
various states. Rates can vary by a number of factors, particularly the volume
of usage and the day and time that calls are made. AT&T Business Services offers
voice and data services individually and in combination with other offerings.
Through combined offerings, AT&T provides customers with benefits such as single
billing, unified services for multilocation companies and customized calling
plans.



Voice Services

Long distance voice services. Business Services' voice communication
offerings include the traditional "one plus" dialing of domestic and
international long distance for customers that select AT&T as their primary long
distance carrier.

Business Services' dedicated services include private line and
special access services that use high-capacity digital circuits to carry voice,
data and video (or multimedia) transmission from point-to-point in multiple
configurations. These services provide high-volume customers with a direct
connection to an AT&T switch instead of switched access shared by many users.
These services permit customers to create internal computer networks, access
external computer networks and the Internet, as well as reduce originating
access costs.

Business Services also offers toll free (800, 888 or 877) inbound
service, where the receiving party pays for the call. This is used in a wide
variety of applications, many of which generate revenue for the user (such as
reservation centers or customer service centers). AT&T offers a variety of
features to enhance customers toll free service, including call routing by
origination point and time of day routing.

Business Services also offers a variety of calling cards which allow
the user to place calls from virtually anywhere in the world. Additional
features include prepaid calling cards, conference calling, international
origination, information service access (such as weather or stock quotes), speed
dialing and voice messaging.

Business Local Services. Local carriers provide local exchange,
exchange access, toll, and resold services; sell, install and maintain customer
premises equipment; and provide operator and directory services. The market for
local exchange services consists of a number of distinct service components.
These service components are defined by specific regulatory tariff
classifications including: (i) local network services, which generally include
basic dial tone charges and private line services; (ii) network access services,
which consist of access charges received by local exchange carriers (LECs) from
long distance carriers for the local transport and termination portion of long
distance telephone calls; (iii) long distance network services, which include
the variable portion of charges received by local exchange carriers for
intra-LATA long distance calls; and (iv) additional value added services such as
caller identification, call waiting, call forwarding, three way calling and
voice mail.

AT&T Business Local's customers are principally
telecommunications-intensive businesses, healthcare, and educational
institutions, governmental agencies, long distance carriers and resellers,
Internet service providers, disaster recovery service providers and wireless
communications and financial services companies. AT&T Business Local's centrally
managed customer care and support operations are designed to facilitate the
installation of new services and the processing of orders for changes and
upgrades in customer services.

With a direct sales force in each of its markets, AT&T Business Local
initially targets the large telecommunications-intensive businesses concentrated
in the major metropolitan markets served by its networks. AT&T Business Local
also targets small- and medium-sized business customers in office buildings or
multiple dwelling units already served by its network.



AT&T Business Local generally offers its services in accordance with
applicable tariffs filed with state regulatory agencies (for intrastate
services). AT&T Business Local typically offers local service as part of a
package of services, which can include any combination of other AT&T offerings.
Customers also choose among analog, digital voice-only and ISDN Centrex
telephone lines to their desktops. AT&T owns, houses, manages and maintains the
switch, while customers retain control over network configurations, allowing
customers to add, delete and move lines as needed. For local service, customers
are billed a fixed charge plus usage.

Data and Internet Services

Enhanced Data Communications. Enhanced data services consist of
interexchange data networks utilizing packet switching and transmission
technologies and application services, such as Internet access and Web Site
hosting and management, which utilize the frame relay network. Enhanced data
services enable customers to economically and securely transmit large volumes of
data typically sent in bursts from one site to another. Enhanced data services
are utilized for local area network (LAN) interconnection, remote site, point of
sale and branch office communications solutions.

AT&T utilizes both IP and ATM systems. Both technologies offer
significant efficiencies over circuit switched systems which use a single,
dedicated circuit to complete each transmission. ATM switching is also a more
efficient method of switching and transmitting comingled or multimedia
information. The packet switching technology breaks up a transmission into short
pieces, or packets, which are encoded and transmitted with other packets on the
same circuit, and reassembled at the desired destination. ATM differs from IP in
that the data packets used in ATM (called cells) are one size (53 bytes) whereas
in IP the data packets vary in length. Also, whereas ATM establishes virtual
circuits to ensure that the information sent is reassembled at its destination
in its proper sequence, IP ships each packet of information to its destination
by a different path. While AT&T will continue to have both circuit and packet
switching and transmission technologies for some time, significant future
capital expenditures are not scheduled for circuit switching.

ISDN services provide customers with multiple voice and data
communications services over a single telecommunications line. The Company's
ISDN services allow customers to perform multiple functions such as simultaneous
voice and computer links, and enable the Company to offer customers value-added
features. High speed ISDN applications include desk top video conferencing,
interconnection of LANs and Internet access.

AT&T Business Internet Services. AT&T WorldNet Business Services
provides IP connectivity and IP value-added services, messaging, and electronic
commerce services to businesses. AT&T offers Managed Internet Service, which
gives customers dedicated, high-speed access to the public Internet for business
applications at a variety of speeds and types of access, as well as Business
Dial Service, a dial-up version of Internet access designed to meet the needs of
small- and medium-sized businesses.

AT&T Virtual Private Network (VPN) Service allows businesses to obtain
remote access to e-mail, order entry systems, employee directories, human
resources and other databases, or to create an Intranet and extranets with their
clients, suppliers and business partners, and enables customers to tailor their
VPNs to accommodate specific business applications, performance requirements or
the need to integrate with existing data networks.



AT&T Web Services are a family of hosting and transaction services and
platforms serving the web needs of thousands of businesses. Offers include AT&T
Shared Hosting Services, an economical way for businesses to establish a
presence on the World Wide Web, and AT&T Enhanced Web Development Package for
businesses that want to create web sites that require higher performance and
greater user demand. AT&T Dedicated Hosting Service provides customizable and
pre-packaged Web hosting solutions. AT&T SecureBuySM Service provides the
backoffice infrastructure required to electronically process credit card
transactions online, high-speed links into two of the leading credit card
processing services, and management reports that measure a site's success.

Other IP services AT&T offers let Web site visitors click on a "call me
now" icon if they wish to speak to a customer service agent; connect enterprise
networks that use host or LAN-based and browser-based e-mail systems to AT&T's
value-added messaging services such as e-mail and fax; and enhanced fax
services.

Transport

Business Services is one of the leaders in providing wholesale
networking services to other carriers, providing both network capacity and
switched services. AT&T offers a combination of high-volume transmission
capacity, conventional dedicated line services and dedicated switched services
to Internet service providers (ISPs) and Tier 1 and Tier 2 carriers on a
national or regional basis, as well as switchless resale services to Tier 3
carriers.

Wholesale networking service is typically provided pursuant to
long-term service agreements for terms of one year or longer. These agreements
generally provide for payments at fixed rates based on the capacity and length
of the circuit used. Customers are typically billed on a monthly basis and also
may incur an installation charge or certain ancillary charges for equipment.
After contract expiration, the contracts may be renewed or the services may be
provided on a month-to-month basis. Switched services agreements are generally
offered on a month-to-month basis and the service is billed on a minutes-of-use
basis. More recently, AT&T has also sold network capacity through indefeasible
rights of use agreements under which capacity is furnished for contract terms as
long as 25 years.

CONSUMER SERVICES

Long Distance Voice

AT&T is the leading provider of domestic and international long
distance service to residential consumers in the United States. AT&T provides
regular and custom long distance communications services which it offers
individually and in combination with other services.

AT&T provides interstate and intrastate long distance
telecommunications services throughout the continental United States and
provides, or joins in providing with other carriers, telecommunications services
to and from Alaska, Hawaii, Puerto Rico and the Virgin Islands and international
telecommunications services to and from virtually all nations and territories
around the world. Consumers can use AT&T domestic and international long
distance services by the traditional "one plus" dialing of the desired call
destination, by dial-up access or through the use of AT&T calling cards.



AT&T both delivers and receives international traffic pursuant to its
operating agreements with foreign carriers throughout the world. The terms of
most switched voice operating agreements, as well as established FCC policy,
require that inbound switched voice traffic from the foreign carrier to the
United States be routed to United States international carriers, like AT&T, in
proportion to the percentage of United States outbound traffic routed by that
United States international carrier to the foreign carrier. AT&T's revenues and
costs of sales are sensitive to changes in international settlement rates and
international traffic routing patterns.

In the continental United States, AT&T provides long distance
telecommunications services over AT&T's backbone network. International
telecommunications services are provided by submarine cable systems in which
AT&T holds investment positions, satellites and facilities of other domestic and
foreign carriers.

AT&T markets its consumer long distance services in a variety of ways,
including by means of television advertising, direct mail solicitations and
telephonic solicitations, as well as through brand awareness.

AT&T charges customers based on applicable tariffs filed with the FCC
and individual states. Customers select different services and from various rate
plans which determine the price per minute that they pay on their long distance
calls. Rates typically vary based on a variety or factors, particularly the
volume of usage and the day and time that calls are made.

Consumer Local Services

Local carriers provide local exchange, exchange access, toll, and
resold services; and provide operator and directory services. By the end of
1997, AT&T offered resold local service to residential customers in 8 states.
Notwithstanding its substantial efforts, AT&T experienced significant difficulty
in entering local markets. AT&T's ability to purchase combined network elements
from the incumbent LECs (ILECs), one of the primary methods by which AT&T
intended to provide local service to residential customers, was severely limited
by, among other factors, ILEC-sponsored regulatory and judicial actions, and a
lack of operating interfaces necessary to process network element orders with
ILECs. In spite of strong demand, in the fourth quarter of 1997 AT&T stopped
actively marketing resold local service to residential customers in most of the
areas in which it offered such service because of limitations on ILECs' ability
to handle anticipated demand and because the wholesale rates AT&T received from
ILECs on the sale of such service were insufficient to make resale a viable
method of offering service.

AT&T intends to pursue local entry by transforming the cable footprint
of one-way cable plant into a two-way, broadband network capable of meeting the
full spectrum of communication needs of the residential customer. AT&T intends
to deploy a variety of services over the upgraded cable plant, including a
richly featured all distance (i.e., local, long distance, international) voice
telephony offering. AT&T has used existing circuit-switched technology to pilot
telephony service offers over the cable plant beginning in 1999. However, AT&T
expects to begin to transition to an integrated Internet protocol (IP) packet
data architecture by the end of 2000 that affords cost and feature benefits over
the older circuit-switched technology.



In addition, AT&T will pursue other transport options, including:

o Expanding AT&T's ability to offer the full range of consumer services
our existing cable footprint through a variety of partnership and
investment initiatives;

o Continued investment in alternative narrowband, wideband and broadband
access technologies, including the fixed wireless technology that AT&T
is currently testing in select markets, and the construction of
dedicated, high-capacity access facilities to serve the broadband
communication needs of residential customers living in multiple
dwelling units (MDUs); and

o Using combinations of ILEC unbundled network elements, as well as ILEC
unbundled loops (which can be combined with switching, transport and
other network elements) to support differentiated voice and data
services.

AT&T intends to use the AT&T Broadband sales force actively to solicit
cable customers as local service customers. In these areas, AT&T intends to
offer cable and local telephony as a bundle of services. AT&T will market local
service in other areas as it rolls out its local telephony capabilities.

For local service, customers are billed a fixed charge plus usage. AT&T
intends to offer rates competitive with those offered by LECs, as well as
discounted offers for certain bundles of services.

AT&T WorldNet(R) Consumer Services

AT&T offers dial-up Internet access to consumers through its AT&T
WorldNet Services, a leading provider of direct Internet access service in the
United States. At December 31, 1999, AT&T WorldNet service had approximately
1.479 million customers.

In 1998, AT&T WorldNet Services entered into agreements with Yahoo!,
Excite and Lycos to offer co-branded access services to the portals' customers.
For example, a Yahoo! customer may subscribe to Internet access through Yahoo!
Online Powered by AT&T WorldNet Services. In these cases AT&T WorldNet Services
supplies the underlying access, billing and customer care, while the portal
provides the content in the form of a personalizable start page and other
popular features.

In 1999, AT&T WorldNet Services began offering members an AT&T branded
search engine as part of redesign of the Company's web site, and enhanced
several other subscriber features, including increasing the disk storage space
for personal web pages to 10 megabytes for each e-mail id (six e-mail ids per
account, 60 megabytes of disk storage) and providing a template that helps
members build personal web pages quickly and easily. AT&T WorldNet Services
entered into a co-marketing arrangement with Sega, providing Internet access via
Sega's new Dreamcast game machine, and it received recognition as the top ISP in
the industry from PC Week, PC Magazine and Smart Money.

AT&T WorldNet Services generates revenues principally through
subscription and usage fees, as well as from electronic commerce and advertising
revenues. AT&T WorldNet Service offers a variety of pricing plan options,
including bundled options. Generally, customers are charged a flat rate for a
certain number of hours with charges for each additional hour of usage.



AT&T WorldNet Services' marketing programs are designed to attract and
retain profitable customers. AT&T seeks to build brand recognition and customer
loyalty and to make it easy for consumers to try, and stay with, AT&T WorldNet
Services. In addition to direct marketing through brand name advertising, direct
mail and magazine insert promotions and bundling offers, AT&T WorldNet service
maintains a large indirect channel marketing effort. Through this indirect
channel AT&T WorldNet service software is bundled in new computers produced by
major manufacturers, and is included on millions of software titles published by
independent software vendors.

BROADBAND SERVICES

AT&T Broadband offers a variety of services through its cable
broadband network, including traditional analog video and new services such as
digital cable and AT&T@Home, which offers high-speed cable Internet access
service. Also included in AT&T Broadband are the operations associated with
developing and refining the infrastructure that will support broadband
telephony.

Cable television systems receive video, audio and data signals
transmitted by nearby television and radio broadcast stations, terrestrial
microwave relay services and communications satellites. Such signals are then
amplified and distributed by coaxial cable and optical fiber to the premises of
customers who pay a fee for the service. In many cases, cable television systems
also originate and distribute local programming.

At December 31, 1999, approximately 74% of AT&T Broadband's cable
television systems had bandwidth capacities ranging from 450 megahertz to 750
megahertz. The Company's cable television systems generally carry up to 80
analog channels. Compressed digital video technology converts on average twelve
analog signals (now used to transmit video and voice) into a digital format and
compresses such signals (which is accomplished primarily by eliminating the
redundancies in television imagery) into the space normally occupied by one
analog signal. The digitally compressed signal is uplinked to a satellite, which
retransmits the signal to a customer's satellite dish or to a cable system's
headend to be distributed, via optical fiber and coaxial cable, to the
customer's home. At the home, a set-top video terminal converts the digital
signal into analog channels that can be viewed on a normal television set.

Domestic Basic-TV cable customers served by AT&T Broadband are
summarized as follows (amounts in millions):

Basic-TV customers at December 31,
-----------------------------------------
1999 1998 1997 1996 1995
------ ------ ------ ------ ------
Managed through AT&T Broadband's
operating divisions 11.3 11.4 14.2 13.4 11.9
Other non-managed subsidiaries of
AT&T Broadband 0.1 0.5 0.2 0.5 0.6
------ ------ ------ ------ ------
11.4 11.9 14.4 13.9 12.5
====== ====== ====== ====== ======



During 1999, AT&T Broadband completed two transactions in which it
contributed cable television systems serving in the aggregate approximately
863,000 customers to two separate joint ventures in exchange for non-controlling
ownership interests in such joint ventures, and the assumption and repayment by
the joint ventures of indebtedness.

The decline in total Basic-TV customers between 1997 and 1998 is
attributable to certain contribution transactions entered into in 1998. In the
most significant of these transactions, on March 4, 1998, AT&T Broadband
contributed to Cablevision Systems Corporation (CSC) certain of its cable
television systems serving approximately 830,000 customers in exchange for
approximately 48.9 million newly issued CSC Class A common shares (the CSC
Transaction) and the assumption of indebtedness.

In addition to the CSC Transaction, during 1998 AT&T Broadband also
completed eight transactions whereby AT&T Broadband contributed cable television
systems serving in the aggregate approximately 1,924,000 customers to eight
separate joint ventures (collectively, the 1998 Joint Ventures) in exchange for
non-controlling ownership interests in each of the 1998 Joint Ventures, and the
assumption and repayment by the 1998 Joint Ventures of indebtedness.

AT&T Broadband had approximately 1.8 million digital customers and
200,000 AT&T@Home customers at December 31, 1999.

AT&T Broadband operates cable television systems throughout the United
States.

Service Charges. AT&T Broadband offers a limited "basic service"
(Basic-TV) (primarily comprised of local broadcast signals and public,
educational and governmental (PEG) access channels) and an "expanded tier"
(primarily comprised of specialized programming services, in such areas as
health, family entertainment, religion, news, weather, public affairs,
education, shopping, sports and music). The monthly fee for basic service
generally ranges from $9.50 to $15.00, and the monthly service fee for the
expanded tier generally ranges from $15.00 to $21.50. AT&T Broadband offers
"premium services" (referred to in the cable television industry as "Pay-TV" and
"pay-per-view") to its customers. Such services consist principally of feature
films, as well as live and taped sports events, concerts and other programming.
AT&T Broadband also offers Pay-TV services for a monthly fee. Charges are
usually discounted when multiple Pay-TV services are ordered. Customers may also
elect to subscribe to digital video services comprised of up to 80 additional
video channe;s and between 10 and 30 additional audio channels featuring
additional specialized programming and premium services at an average
incremental monthly charge of $10.00.

As further enhancements to their cable services, for a monthly charge
customers may generally rent converters or converters with remote control
devices, as well as purchase a channel guide. Also a nonrecurring installation
charge is usually charged.

Monthly fees for Basic-TV and Pay-TV services to commercial customers
vary widely depending on the nature and type of service. Except under the terms
of certain contracts to provide service to commercial accounts, customers are
free to discontinue service at any time without penalty.

AT&T Broadband also offers AT&T@Home, a high speed cable Internet
access service, in some markets. Monthly charges for AT&T@Home range from $29.95
to $39.95.



The Cable Television Consumer Protection and Competition Act of 1992
(the 1992 Cable Act) and the Telecommunications Act of 1996 (the
Telecommunications Act, together with the 1992 Cable Act, the Cable Acts),
established rules under which AT&T Broadband's basic service and expanded tier
service rates and equipment and installation charges are regulated if a
complaint is filed or if the appropriate franchise authority is certified.

Local Franchises. Cable television systems generally are constructed
and operated under the authority of nonexclusive permits or "franchises" granted
by local and/or state governmental authorities. Federal law, including the Cable
Communications Policy Act of 1984 (the 1984 Cable Act) and the 1992 Cable Act,
limits the power of the franchising authorities to impose certain conditions
upon cable television operators as a condition of the granting or renewal of a
franchise.

Franchises contain varying provisions relating to construction and
operation of cable television systems, such as time limitations on commencement
and/or completion of construction; quality of service, including (in certain
circumstances) requirements as to the number of channels and broad categories of
programming offered to customers; rate regulation; provision of service to
certain institutions; provision of channels for public access and commercial
leased-use; and maintenance of insurance and/or indemnity bonds. AT&T
Broadband's franchises also typically provide for periodic payments of fees, not
to exceed 5% of revenue, to the governmental authority granting the franchise.
Additionally, many franchises require payments to the franchising authority for
the funding of PEG access channels. Franchises usually require the consent of
the franchising authority prior to a transfer of the franchise or a transfer or
change in ownership or operating control of the franchisee.

Subject to applicable law, a franchise may be terminated prior to its
expiration date if the cable television operator fails to comply with the
material terms and conditions thereof. Under the 1984 Cable Act, if a franchise
is lawfully terminated, and if the franchising authority acquires ownership of
the cable television system or effects a transfer of ownership to a third party,
such acquisition or transfer must be at an equitable price or, in the case of a
franchise existing on the effective date of the 1984 Cable Act, at a price
determined in accordance with the terms of the franchise, if any.

In connection with a renewal of a franchise, the franchising authority
may require the cable operator to comply with different and more stringent
conditions than those originally imposed, subject to the provisions of the 1984
Cable Act and other applicable federal, state and local law. The 1984 Cable Act,
as supplemented by the renewal provisions of the 1992 Cable Act, establishes an
orderly process for franchise renewal which protects cable operators against
unfair denials of renewals when the operator's past performance and proposal for
future performance meet the standards established by the 1984 Cable Act. AT&T
Broadband believes that its cable television systems generally have been
operated in a manner which satisfies such standards and allows for the renewal
of such franchises; however, there can be no assurance that the franchises for
such systems will be successfully renewed as they expire.

Most of AT&T Broadband's present franchises had initial terms of
approximately 10 to 15 years. The duration of AT&T Broadband's outstanding
franchises presently varies from a period of months to an indefinite period of
time. Approximately one thousand of AT&T Broadband's franchises expire within
the next five years. This represents approximately 25% percent of the franchises
held by AT&T Broadband and involves over 4 million basic customers.



Cable Telephony. AT&T Broadband's telephony pilot market initiatives
progressed on schedule in 1999. As of December 31, 1999, AT&T Broadband had
introduced broadband telephony service to customers in 16 cities within nine
pilot markets and had nearly 8,300 broadband telephony customers. The markets
include the California Bay Area (including Fremont), Chicago, Dallas, Denver,
Pittsburgh, Seattle, Salt Lake City, St. Louis and Portland, Oregon.

WIRELESS SERVICES

The AT&T Wireless Group Tracking Stock

On March 14, 2000 the AT&T shareholders approved amendments to the AT&T
certificate of incorporation that would permit AT&T to create a separate class
of its common stock, the AT&T Wireless Group tracking stock, which would track
the performance of our wireless business. As of the date of filing this Form
10-K, no shares of the AT&T Wireless Group tracking stock were outstanding.

The AT&T Wireless Group includes the results of certain assets and
liabilities which were not managed as part of the Wireless Services segment in
1999. AT&T Wireless Group tracking stock is designed to reflect the separate
economic performance of the AT&T Wireless Group. Except as described below, we
attribute all of AT&T's current wireless operations to the AT&T Wireless Group,
including:

o all mobile and fixed wireless licenses,
o all wireless networks, operations, cell sites,
retail operations, wireless customer care
facilities and customer location assets, and
o interests in partnerships and affiliates providing
wireless mobile communications in the United
States and internationally.

The AT&T Common Stock Group retains:

o existing and future wireless activities that stem
from country-specific joint venture relationships
that are predominantly non-wireless, and
o incidental wireless capabilities or links in any
backbone or other communications network that is
predominantly non-wireless.

We currently intend to include all future wireless activities in the
AT&T Wireless Group. Our board of directors may, however, in its discretion, but
subject to the AT&T Wireless Group policy statement, direct new businesses and
assets to the AT&T Wireless Group or the AT&T Common Stock Group or dispose of
or transfer businesses or assets of either group.

Business of the AT&T Wireless Group

The AT&T Wireless Group is one of the largest wireless service
providers in the United States, based on approximately $7.6 billion in revenues
for the year ended December 31, 1999. Including its partnership markets, the
AT&T Wireless Group had over 12 million total subscribers as of December 31,
1999.

The AT&T Wireless Group operates one of the largest U.S. digital
wireless networks. The AT&T Wireless Group, including its partnership and
affiliate markets, currently holds 850 megahertz and 1900 megahertz licenses to



provide wireless services covering 94% of the U.S. population, with
approximately 81% of the U.S. population covered by at least 30 megahertz of
wireless spectrum as of December 31, 1999. As of December 31, 1999, the AT&T
Wireless Group's built network, including partnership and affiliate markets,
covered 65% of the U.S. population. This includes operations in 42 of the 50
largest U.S. metropolitan areas. The AT&T Wireless Group supplements its own
operations with roaming agreements that allow its subscribers to use other
providers' wireless services in regions where the AT&T Wireless Group does not
have operations. Through these roaming agreements, the AT&T Wireless Group is
able to offer its customers wireless services covering over 95% of the U.S.
population.

Services and products

The AT&T Wireless Group offers a variety of services for both voice and
data communications. Service can include wireless voice transmission as well as
custom calling services for digital services, such as voicemail, call
forwarding, call waiting, caller ID, three-way calling, no-answer and busy
transfer. The AT&T Wireless Group also offers a variety of other enhanced
features, including display messaging, which allows a cellular phone to receive
and store short alphanumeric messages and pages and to provide subscribers with
notification of voicemail messages, even if the handset is in use or switched
off, extended battery life and enhanced directory assistance, which enables
callers to be connected to the party whose number was sought without hanging up
and redialing.

As a packet-switched network, the AT&T Wireless Group's cellular
digital packet data (CDPD) network takes advantage of the fact that with many
data applications, data is sent in bursts with intermittent quiet periods, which
allows many users to share the network channel. As a result, relative to data
services carried over circuit-switched analog or digital wireless networks, the
AT&T Wireless Group's packet-switched CDPD service is a significantly more
cost-effective means of sending data for the majority of applications because it
allows a channel to be shared by many users. For example, for many applications,
the AT&T Wireless Group's packet-switched CDPD network allows it to offer its
customers unlimited, always-on usage, most often for a flat monthly fee. This
makes its CDPD network service attractive for a variety of new applications.

In the future, the AT&T Wireless Group expects a number of additional
applications will be developed, including e-commerce and shopping services and
services that are enhanced by information about the user's location. By
providing or facilitating such applications, the AT&T Wireless Group believes it
can generate new revenue streams, as well as develop personalized relationships
with its customers.

The AT&T Wireless Group offers a variety of products as complements to
its wireless service, including handsets and accessories, such as chargers,
headsets, belt clips, faceplates and batteries. As part of its basic service
offering, the AT&T Wireless Group provides easy-to-use, interactive menu-driven
handsets that can be activated over the air. These handsets primarily feature
word prompts and menus rather than numeric codes to operate handset functions.
Some handsets allow mobile access to the Internet. In addition, the AT&T
Wireless Group offers tri-mode handsets, which are handsets compatible with PCS,
digital cellular and analog cellular frequencies and service modes. Tri-mode
handsets permit customers to roam across a variety of wireless networks and
incorporates AT&T's intelligent roaming data base (IRDB) system. The AT&T
Wireless Group offers its customers use of Nokia, Ericsson, Mitsubishi and
Motorola handsets.



The AT&T Wireless Group markets its wireless services in its managed
markets under the AT&T brand name. It markets wireless services to business and
residential customers through a direct sales force of 2,100, through sales
points of presence in approximately 390 AT&T company-owned stores located in 36
states, and kiosks and other customer points of presence, including the Internet
and inbound call centers, and through local and national non-affiliated
retailers throughout the United States. The AT&T Common Stock Group sales force
also sells wireless services to business and residential customers as part of
bundled offerings with services of the AT&T Common Stock Group. The AT&T
Wireless Group also relies upon dealers to market its services in some
locations.

The AT&T Wireless Group charges may include fees for service
activation, monthly access, per-minute airtime and customer-calling features,
which may include a fixed number of minutes or packets of data per month at a
set price and generally offers a variety of pricing options, most of which
combine a fixed monthly access fee for a fixed number of minutes or packets of
data and additional charges for usage in excess of those allotted. Customers may
also incur long distance and roaming fees.

Fixed Wireless

Fixed wireless service provides customers with high speed broadband
access coupled with wireline quality voice access. Fixed wireless provides a
high speed packet data channel which can be used by up to five data devices
simultaneously (for example, five personal computers simultaneously accessing
the Internet) at download speeds of up to 512 kilobits per second. The service
is expected to be capable of speeds of up to one megabit per second by mid 2000.
In addition, fixed wireless can provide up to four lines of wireline quality
voice telephony, including custom calling features (e.g., call waiting, caller
ID, three-way calling) available today over wireline networks. Fixed wireless
was reported within the Consumer Services segment in 1999, but will be included
in the AT&T Wireless Group in 2000.

Other assets

The AT&T Wireless Group also possesses certain other assets not
described above. The most significant of these assets include a number of equity
interests in domestic and international wireless operations and an air-to-ground
wireless operation.

Domestically, the AT&T Wireless Group has joint ventures with or
interests in a number of wireless operators, including Telecorp PCS, Triton PCS
and Tritel Inc.. Internationally, the AT&T Wireless Group owns one half of the
33.3% equity stake in Rogers Cantel it holds jointly with British
Telecommunications. The AT&T Wireless Group is the operating partner in wireless
ventures in Colombia, India and Taiwan. In 2000 the AT&T Wireless Group was also
allocated one half the interest that AT&T possesses in Japan Telecom. In
addition, subject to existing agreements or commitments, to the extent that AT&T
acquires any international wireless investments in connection with its merger
with MediaOne, AT&T intends to allocate those investments to the AT&T Wireless
Group in exchange for fair and reasonable consideration.

The Aviation Communications Division (ACD) of the AT&T Wireless Group
provides air-to-ground communications services. A minority ownership interest in
ACD is held by Rogers Cantel. ACD owns and operates a network of ground-based
and airborne telecommunications equipment and related assets that deliver
digital telephone service to commercial and private aircraft in North America.



Wireless network

The AT&T Wireless Group's ownership position in U.S. markets was
obtained through FCC auctions and the FCC lottery and settlement process as well
as through acquisitions of, and purchases and exchanges of, licenses with other
cellular providers.

Mobile voice network

Coverage. As of December 31, 1999, the AT&T Wireless Group's built
network, including partnership and affiliate markets, covered 65% of the U.S.
population, including operations in 42 of the 50 largest U.S. metropolitan
areas. The AT&T Wireless Group provides virtually seamless services over its
wireless network, which operates using both 850 megahertz and 1900 megahertz
licenses. Where agreements are in place, the AT&T Wireless Group is able to
offer service to customers of other wireless providers when they travel through
its service area, and AT&T Wireless Group subscribers can roam through other
wireless providers' service areas.

Analog and digital technologies. The AT&T Wireless Group offers both
analog and digital service in its 850 megahertz markets and digital service in
its 1900 megahertz markets. The AT&T Wireless Group believes that digital
technology offers many advantages over analog technology, including
substantially increased network capacity, greater call privacy, enhanced
services and features, lower operating costs, reduced susceptibility to fraud
and the opportunity to provide improved data transmissions. Moving customers to
digital service has been a key component of the AT&T Wireless Group's overall
wireless strategy. Digital service enables the AT&T Wireless Group to provide
added benefits and services to its customers, including extended battery life,
caller ID, text messaging and voicemail with message waiting indicator.

TDMA network. The AT&T Wireless Group has chosen time division multiple
access (TDMA) technology for its digital network. TDMA permits the use of
advanced tri-mode handsets that allow for roaming across analog and digital
systems and across 850 megahertz and 1900 megahertz spectrums. TDMA digital
technology allows for enhanced services and features, such as short alphanumeric
message service, extended battery life, added call security and improved voice
quality. TDMA's hierarchical cell structure enables the AT&T Wireless Group to
enhance network coverage with lower incremental investment through the
deployment of micro and pico, as opposed to macro, cell sites. This enables the
AT&T Wireless Group to offer customized billing options and to track billing
information per individual cell site, which is practical for advanced wireless
applications such as fixed wireless and wireless office applications. TDMA
served an estimated 35 million subscribers worldwide and 18 million subscribers
in North America as of December 31, 1999, according to the Universal Wireless
Communications Consortium, an association of TDMA service providers and
manufacturers. TDMA equipment is available from leading telecommunication
vendors such as Lucent, Ericsson and Nortel Networks Corporation. A number of
other wireless service providers have chosen code division mobile access (CDMA)
or global system for mobile communications (GSM) as their digital wireless
technology.

CDPD network. The AT&T Wireless Group's CDPD network currently covers
89 million POPs, which represents over 60% of its built network, and its CDPD
customers can roam on the CDPD networks of other wireless providers, which,
together, cover an additional 72 million POPs. CDPD is an industry standard
using Internet Protocol, which allows most applications written for the Internet
as well as many corporate applications to run efficiently over the network



without modification. Using CDPD, data files and transactions are divided into
small packets and sent on a dedicated wireless channel. In many data
applications, data is sent in bursts with intermittent quiet periods. Packet
transmission technologies take advantage of this fact and allow user data to be
efficiently carried on the same network channel. As a result, relative to data
services carried over circuit-switched analog or digital wireless networks, the
AT&T Wireless Group's packet-switched CDPD service is a significantly more
cost-effective means of sending data for the majority of applications because it
allows many users to share the same channel.

OTHER BUSINESSES

AT&T Solutions

AT&T Solutions, established in 1995, provides outsourcing, consulting
and networking integration services to large businesses. AT&T Solutions provides
clients with a broad array of professional services to satisfy clients complete
networking technology needs.

AT&T Solutions' offerings include operational and networking management
services for a broad range of computing platforms, including mainframe,
mid-range computers, personal computer and network environments, such as
local-area networks and wide-area networks. Most customers execute long-term
contracts for AT&T Solutions networking services.

AT&T Solutions' customers are generally within the top 2000
multinational corporations in the world. AT&T Solutions' sales force engages in
direct solicitation of those customers as well as referrals from other units of
AT&T.

International

AT&T has established a number of international alliances to increase
the reach and scope of AT&T's services and network over time and has invested in
certain countries in order to increase the range of services AT&T offers in
those countries.

International operations include international carrier services
businesses, international online services, as well as consolidated foreign
operations such as frame relay services in the United Kingdom. AT&T also has a
number of international joint ventures and alliances, such as Alestra in Mexico,
AT&T Canada Corp., and Japan Telecom.

On January 6, 2000 AT&T and British Telecommunications plc (BT) created
a global venture to serve the communications needs of multinational companies
and the international calling needs of businesses around the world. The venture,
called Concert and owned equally by AT&T and BT, combined transborder assets and
operations of each company, including their existing international networks,
their international traffic, their transborder products for business customers
- -- including an expanding set of Concert services -- and AT&T and BT's
multinational accounts in selected industry sectors.

On June 1, 1999, AT&T Canada Corp. merged with MetroNet Communications
Corp., Canada's largest competitive local exchange carrier. Under the terms of
the merger agreement, AT&T received 31 percent of the equity interest and 23
percent of the voting interest in the combined entity in exchange for AT&T
Canada Corp. and ACC TelEnterprises Ltd. In addition, AT&T agreed to purchase



all of the remaining shares at the greater of the then appraised fair market
value or the accreted minimum price, which initially is C$37.50 accreting after
June 30, 2000 at a rate of 16% per annum, compounded quarterly. If the
acquisition is not completed by June 30, 2003, those shares, along with AT&T's
shares, would be sold through an auction process and AT&T will make whole the
other shareholders for the amount they would have been entitled to if AT&T had
purchased the shares. The completion of the acquisition is subject to the
condition that AT&T is permitted to acquire the shares under Canada's foreign
ownership restrictions. AT&T may acquire the shares prior to a change in the
ownership restrictions by developing a structure that addresses such ownership
restrictions.

LEGISLATIVE AND REGULATORY DEVELOPMENTS

Telecommunications Act of 1996

In February 1996, the Telecommunications Act became law. The
Telecommunications Act, among other things, was designed to foster local
exchange competition by establishing a regulatory framework to govern new
competitive entry in local and long distance telecommunications services. The
Telecommunications Act will permit the Regional Bell Operating Companies (RBOCs)
to provide interexchange services originating in any state in its region after
demonstrating to the FCC that such provision is in the public interest and
satisfying the conditions for developing local competition established by the
Telecommunications Act.

In August 1996, the FCC adopted rules and regulations, including
pricing rules (the "Pricing Rules") to implement the local competition
provisions of the Telecommunications Act, including with respect to the terms
and conditions of interconnection with LEC networks and the standards governing
the purchase of unbundled network elements and wholesale services from LECs.
These implementing rules rely on state public utilities commissions (PUCs) to
develop the specific rates and procedures applicable to particular states within
the framework prescribed by the FCC.

On July 18, 1997, the United States Court of Appeals for the 8th
Circuit issued a decision holding that the FCC lacks authority to establish
pricing rules to implement the sections of the local competition provisions of
the Telecommunications Act applicable to interconnection with LEC networks and
the purchase of unbundled network elements and wholesale services from LECs.
Accordingly, the Court vacated the rules that the FCC had adopted in August
1996, and which had been stayed by the Court since September 1996. On October
14, 1997, the 8th Circuit Court of Appeals vacated an FCC Rule that had
prohibited incumbent LECs from separating network elements that are combined in
the LEC's network, except at the request of the competitor purchasing the
elements. This decision increased the difficulty and costs of providing
competitive local service through the use of unbundled network elements
purchased from the incumbent LECs.

On January 25, 1999, the Unites States Supreme Court issued a decision
reversing the 8th Circuit Court of Appeal's holding that the FCC lacks
jurisdiction to establish pricing rules applicable to interconnection and the
purchase of unbundled network elements, and the Court of Appeal's decision to
vacate the FCC's rule prohibiting incumbent LECs from separating network
elements that are combined in the LEC's network. The effect of the Supreme
Court's decision is to reinstate the FCC's rules governing pricing and the
separation of unbundled network elements. The 8th Circuit Court of Appeals will



now consider the incumbent LECs' claims that although the FCC has jurisdiction
to adopt pricing rule, the rules it adopted are not consistent with the
applicable provisions of the Act. The Supreme Court also vacated the FCC's rule
identifying and defining the unbundled network elements that incumbent LECs are
required to make available to new entrants, and directed the FCC to reexamine
this issue in light of the standards mandated by the Act.

In response to the Supreme Court's decision, the FCC completed its
re-examination of and released an order identifying and defining the unbundled
network elements that incumbent LECs are required to make available to new
entrants. That order re-adopted the original list of elements, with certain
exceptions. An association of incumbent LECs has appealed the FCC's order to the
United States Court of Appeals for the District of Columbia Circuit, and asked
the Court to hear the appeal on an expedited basis. A number of parties,
including AT&T and other incumbent LECs, have petitioned the FCC to reconsider
and/or clarify its order. The FCC has moved to hold the appeal in abeyance
pending its disposition of the reconsideration petitions.

In view of the proceedings pending before the 8th Circuit, DC Circuit,
FCC and state PUCs, there can be no assurance that the prices and other
conditions established in each state will provide for effective local service
entry and competition or provide AT&T with new market opportunities.

In December 1999, Bell Atlantic obtained approval to offer long
distance telecommunications service in New York state, the first time an RBOC
had received this approval under the Telecommunications Act. Bell Atlantic began
offering combined local and long distance service in January 2000.

In January 2000, SBC Communications, Inc. filed with the FCC an
application for authorization to offer long distance telecommunications service
in Texas. Under the Telecommunications Act, the FCC is required to issue a
decision on the application by April 2000.

Modification of Final Judgment of 1982

Prior to 1996, AT&T and the RBOCs were subject to the provisions of the
Modification of Final Judgment of 1982 (MFJ) since its implementation. The
Telecommunications Act effectively superseded future operation of the MFJ.
Consequently, on April 11, 1996, Judge Harold Greene issued an order terminating
the MFJ.
Regulation of Rates

AT&T is subject to the jurisdiction of the FCC with respect to
interstate and international rates, lines and services, and other matters. From
July 1989 to October 1995, the FCC regulated AT&T under a system known as "price
caps" whereby AT&T's prices, rather than its earnings, were limited. On October
12, 1995, recognizing a decade of enormous change in the long distance market
and finding that AT&T lacked market power in the interstate long distance
market, the FCC reclassified AT&T as a "non-dominant" carrier for its domestic
interstate services. As a result, AT&T became subject to the same regulations as
its long distance competitors for such services. Thus, AT&T was no longer
subject to price cap regulation for these services, was able to file tariffs
that are presumed lawful on one day's notice, and was free of other regulations
and reporting requirements that apply only to dominant carriers.

In addition, on October 31, 1996, the FCC issued an order that would
have prohibited non-dominant carriers, including AT&T, from filing tariffs for



their domestic interstate services. AT&T and other parties have filed an appeal
of the FCC's order with the United States Court of Appeals for the D.C. Circuit.
In February 1997, the D.C. Circuit stayed the effectiveness of the FCC's order
pending appeal. Oral argument has not yet been scheduled. If the Court affirms
the FCC's order and lifts the stay, non-dominant carriers, including AT&T, will
have to utilize mechanisms other than tariffs to establish the terms and
conditions that apply to domestic, interstate telecommunications services.

Furthermore, in May 1997, the FCC adopted three orders relating to
Price Caps, Access Reform, and Universal Service that substantially revised the
level and structure of access charges that AT&T as a long distance carrier pays
to incumbent LECs. AT&T has agreed to pass through to consumers any savings to
AT&T as a result of access charge reform. AT&T began implementing these
reductions July 15, 1997. Consequently, AT&T's results after June 1997 reflects
lower revenue per minute of usage and lower access and other interconnection
costs per minute of usage.

The Price Cap Order requires LECs to reduce their price cap indices by
6.5 percent annually, less an adjustment for inflation, which is likely to
result in a reduction in the interstate access charges that long distance
carriers, such as AT&T, pay to LECs. The Access Charge Reform Order restructured
access charges so that certain costs that do not vary with usage will be
recovered on a flat-rate basis and permitted increased flat-rate assessments on
multiline business customers and on residential lines beyond the primary
telephone line. This restructuring allows a reduction in access charges assessed
on long distance carriers on a usage basis. Finally, the Universal Service Order
(which represents an FCC mandated contribution to support schools and libraries
and rural health care programs, high cost support and low income support
mechanisms which are paid to the Universal Service Administrative Company)
adopts a new mechanism for funding universal service which expands the set of
carriers that must contribute to support universal service from only long
distance carriers to all carriers, including LECs, that provide interstate
telecommunications services. Similarly, the set of carriers eligible for the
universal service support has been expanded from only LECs to any eligible
carrier providing local service to a customer, including AT&T as a new entrant
in local markets. The Universal Service Order also adopted measures to provide
discounts on telecommunications services, Internet access and inside wire to
eligible schools and libraries and rural health carrier providers.

AT&T remains subject to the statutory requirements of Title II of the
Communications Act. AT&T must offer service under rates, terms and conditions
that are just, reasonable and not unreasonably discriminatory; it is subject to
the FCC's complaint process, and it must give notice to the FCC and affected
customers prior to discontinuance, reduction, or impairment of service. AT&T has
also made certain commitments that address concerns that had been raised with
regard to the potential impact of declaring AT&T to be non-dominant, including a
three-year rate assurance for low income and low usage residential users and a
three-year limit on, and 5 days advance notice for, rate increases on 800
directory assistance and analog private line services.

AT&T's international private line services have been classified as
non-dominant for several years. AT&T's switched international services have
become subject to increased competition, similar to its domestic services and on
May 9, 1996, the FCC adopted an order reclassifying AT&T as a non-dominant
carrier for such services. AT&T has made certain voluntary commitments that
address issues raised in that proceeding, including commitments: (i) to maintain
its annual average revenue per minute for international residential calls at or



below the 1995 level through May 9, 1999, and in the event of a significant
change that substantially raises AT&T's costs, to provide the FCC five business
days notice prior to implementing rate increases that would raise the annual
average revenue per minute for such calls above the 1995 level; and (ii) to
maintain certain discount calling plans providing at least a 15% discount off
basic pricing schedules until May 9, 1999. AT&T also made voluntary commitments
relating to its operation of international cable facilities, its negotiation of
settlement agreements with foreign carriers and its relationship with foreign
partners.

In addition to the matters described above with respect to the
Telecommunications Act, state public service commissions or similar authorities
having regulatory power over intrastate rates, lines and services and other
matters regulate AT&T's local and intrastate communications services. The system
of regulation used in many states is rate-of-return regulation. In recent years,
many states have adopted different systems of regulation, such as: complete
removal of rate-of-return regulation, pricing flexibility rules, price caps and
incentive regulation.

Wireless Regulatory Environment

The FCC regulates the licensing, construction, operation, acquisition,
sale and resale of wireless systems in the United States pursuant to the
Communications Act of 1934 and the associated rules, regulations and policies
promulgated by the FCC.

Licensing of wireless services systems

The AT&T Wireless Group owns protected geographic service area licenses
granted by the FCC to provide cellular service and PCS. It also owns licenses
granted by the FCC to provide point-to-multi-point communications services in
various bands, including significant licenses in the 37 to 39 gigahertz bands.

A cellular system operates on one of two 25 megahertz frequency blocks
that the FCC allocates for cellular radio service. Cellular systems generally
are used for two-way mobile voice applications, although they may be used for
data applications and fixed wireless services as well. Cellular license areas
are issued for either metropolitan service areas or rural service areas.
Initially, one of the two cellular licenses available in each metropolitan
service area or rural service area was awarded to a local exchange telephone
company by the FCC, while the other license was awarded either through
competitive processes or lotteries. Licenses were issued beginning in 1983, and
over the years numerous license transfers and corporate reorganizations have
obscured the original pattern of distributing one set of licenses to local
telephone company affiliates and the other to companies that do not have local
exchange service in the license area.

A PCS system operates on one of six frequency blocks allocated for
personal communications services. PCS systems generally are used for two-way
voice applications although they may carry two-way data communications as well.
Narrowband PCS systems, in contrast, are for non-voice applications such as
paging and data service and are separately licensed. For the purpose of awarding
PCS licenses, the FCC has segmented the United States into 51 large regions
called major trading areas, which are comprised of 493 smaller regions called
basic trading areas. The FCC awarded two PCS licenses for each major trading
area and four licenses for each basic trading area. Thus, generally, six
licensees are authorized to compete in each area. The two major trading area



licenses authorize the use of 30 megahertz of spectrum. One of the basic trading
area licenses is for 30 megahertz of spectrum, and the other three are for 10
megahertz each. The FCC permits licensees to split their licenses and assign a
portion, on either a geographic or frequency basis or both, to a third party.

The FCC awarded initial PCS licenses by auction. Auctions began with
the 30 megahertz major trading area licenses and concluded in 1998 with the last
of the basic trading area licenses. However, in March 1998, the FCC adopted an
order that allows troubled entities that won PCS 30 megahertz C-Block licenses
at auction to obtain financial relief from their payment obligations and to
return some or all of their C-Block licenses to the FCC for reauctioning. The
FCC completed the reauction of the returned licenses in April 1999. In addition,
certain of the C-block licenses are currently in bankruptcy proceedings, and
these licenses may be returned to the FCC for reauction.

Under the FCC's current rules specifying spectrum aggregation limits
affecting wireless licensees, no entity may hold attributable interests,
generally 20% or more of the equity of, or an officer or director position with,
the licensee, in licenses for more than 45 megahertz of PCS, cellular and
certain specialized mobile radio services where there is significant overlap in
any geographic area. Significant overlap will occur when at least 10% of the
population of the PCS licensed service area is within the cellular and/or
specialized mobile radio service area(s). The FCC recently increased this limit
to 55 megahertz in situations in which a 25 megahertz cellular rural service
area is attributed to a 30 megahertz PCS license. These spectrum aggregation
rules are subject to a pending FCC proceeding that could revise or eliminate
them.

All wireless licenses have a 10-year term, at the end of which term
they must be renewed. The FCC will award a renewal expectancy to a wireless
licensee that has provided substantial service during its past license term, and
has substantially complied with applicable FCC rules and policies and the
Communications Act. Licenses may be revoked for cause and license renewal
applications denied if the FCC determines that a renewal would not serve the
public interest. FCC rules provide that competing renewal applications for
licenses will be considered in comparative hearings, and establish the
qualifications for competing applications and the standards to be applied in
hearings.

All wireless licenses must satisfy specified coverage requirements.
Cellular licenses were required, during the five years following the grant of
the license, to construct their systems to provide service (at a specified
signal strength) to the territory encompassed by their service area. Failure to
provide such coverage resulted in reduction of the relevant license area by the
FCC. All A and B block PCS licensees must construct facilities that offer
coverage to one-third of the population of the service area within five years of
the original license grants and to two-thirds of the population within ten
years. All D and E block PCS licensees must construct facilities that offer
coverage to one-fourth of the population of the licensed area or "make a showing
of substantial service in their license area" within five years of the original
license grants. Licensees that fail to meet the coverage requirements may be
subject to forfeiture of the license.

For a period of up to five years after the grant of a PCS license,
subject to extension, a licensee will be required to share spectrum with
existing licensees that operate certain fixed microwave systems within its
license area under circumstances where interconnection is not available through



the local exchange carrier or the competitive local exchange carrier. In an
effort to balance the competing interests of existing microwave users and newly
authorized PCS licensees, the FCC has adopted a transition plan to relocate such
microwave operators to other spectrum blocks and a cost sharing plan so that if
the relocation of an incumbent benefits more than one PCS licensee, those
licensees will share the cost of the relocation. Initially, this transition plan
allowed most microwave users to operate in the PCS spectrum for a voluntary
two-year negotiation period and an additional mandatory one-year negotiation
period. For public safety entities that dedicate a majority of their system
communications to police, fire or emergency medical services operations, the
voluntary negotiation period is three years, with an additional mandatory
two-year negotiation period. In 1998, the FCC shortened the voluntary
negotiation period by one year, without lengthening the mandatory negotiation
period, for non-public safety PCS licensees in the C, D, E and F Blocks. Parties
unable to reach agreement within these time periods may refer the matter to the
FCC for resolution, but the incumbent microwave user is permitted to continue
its operations until final FCC resolution of the matter. The transition and cost
sharing plans expire on April 4, 2005, at which time remaining microwave
incumbents in the PCS spectrum will be responsible for the costs of relocating
to alternate spectrum locations.

Wireless systems are subject to certain FAA regulations governing the
location, lighting and construction of transmitter towers and antennas and are
subject to regulation under federal environmental laws and the FCC's
environmental regulations. State or local zoning and land use regulations also
apply to tower siting and construction activities. We expect to use common
carrier point-to-point microwave facilities to connect certain wireless cell
sites, and to link them to the main switching office. The FCC licenses these
facilities separately and they are subject to regulation as to technical
parameters and service.

The Communications Act preempts state and local regulation of the entry
of, or the rates charged by, any provider of private mobile radio service or of
commercial mobile radio service, which includes PCS and cellular service. The
FCC does not regulate commercial mobile radio service or private mobile radio
service rates. However, commercial mobile radio service providers are common
carriers and are required under the Communications Act to offer their services
to the public without unreasonable discrimination. The FCC's rules currently
require providers to permit others to resell their services for a profit;
however, these rules will expire in 2002.

Transfers and assignments of cellular and PCS
licenses

The Communications Act and FCC rules require the FCC's prior approval
of the assignment or transfer of control of a license for a PCS or cellular
system. In addition, the FCC has established transfer disclosure requirements
that require licensees who assign or transfer control of a PCS license within
the first three years of their license terms to file associated sale contracts,
option agreements, management agreements or other documents disclosing the total
consideration that the licensee would receive in return for the transfer or
assignment of its license. Non-controlling interests in an entity that holds an
FCC license generally may be bought or sold without FCC approval subject to the
FCC's spectrum aggregation limits. However, notification and expiration or
earlier termination of the applicable waiting period under Section 7A of the
Clayton Act by either the Federal Trade Commission or the Department of Justice
may be required, as well as approval by state or local regulatory authorities



having competent jurisdiction, if we sell or acquire PCS or cellular interests
over a certain size.

Foreign ownership

Under existing law, no more than 20% of an FCC licensee's capital stock
may be owned, directly or indirectly, or voted by non-U.S. citizens or their
representatives, by a foreign government or its representatives or by a foreign
corporation. If an FCC licensee is controlled by another entity, as is the case
with our ownership structure, up to 25% of that entity's capital stock may be
owned or voted by non-U.S. citizens or their representatives, by a foreign
government or its representatives or by a foreign corporation. Foreign ownership
above the 25% level may be allowed should the FCC find such higher levels not
inconsistent with the public interest. The FCC has ruled that higher levels of
foreign ownership, even up to 100%, are presumptively consistent with the public
interest with respect to investors from certain nations. If our foreign
ownership were to exceed the permitted level, the FCC could revoke our FCC
licenses, although we could seek a declaratory ruling from the FCC allowing the
foreign ownership or take other actions to reduce our foreign ownership
percentage in order to avoid the loss of our licenses. We have no knowledge of
any present foreign ownership in violation of these restrictions.

Recent regulatory developments

The FCC has announced rules for making emergency 911 services available
by cellular, PCS and other commercial mobile radio service providers, including
enhanced 911 services that provide the caller's telephone number, location and
other useful information. The original timetable required commercial mobile
radio services providers to be able to process and transmit 911 calls without
call validation, including those from callers with speech or hearing
disabilities, by late 1997. Additionally, commercial mobile radio service
providers are required to take actions enabling them to relay a caller's
automatic number identification and cell site if requested to do so by a public
safety dispatch agency that agreed to reimburse the provider for the additional
expenses incurred to provide those services. In October 1999, the FCC revised
its rules to eliminate any requirement that such agencies reimburse wireless
providers. In a companion order issued earlier in the fall of 1999, the FCC also
modified rules requiring commercial mobile radio service providers to provide
information on the location of a 911 call. The modified rules allow providers to
use either network or handset-based technologies to provide such information.
However, providers are not permitted to recover their costs of deploying such
technologies from dispatch agencies.

The FCC has granted waivers of the requirement to provide 911 service
to users with speech or hearing disabilities to various providers, and we have
obtained a waiver. On June 9, 1999, the FCC also adopted rules designed to
ensure that analog cellular calls to 911 are completed. These rules, which do
not apply to digital cellular service or to PCS, give each cellular provider a
choice of three ways to meet this requirement. State actions incompatible with
the FCC rules are subject to preemption.

On August 8, 1996, the FCC released its order implementing the
interconnection provisions of the Telecommunications Act. Although many of the
provisions of this order were struck down by the U.S. Court of Appeals for the
Eighth Circuit, on January 25, 1999, the U.S. Supreme Court reversed the Eighth
Circuit and upheld the FCC in all respects material to our operations. On June
10, 1999, the Eighth Circuit issued an order requesting briefs on certain issues



it did not address in its earlier order, including the pricing regime for
interconnection. While appeals have been pending, the rationale of the FCC's
order has been adopted by many states' public utility commissions, with the
result that the charges that cellular and PCS operators pay to interconnect
their traffic to the public switched telephone network have declined
significantly from pre-1996 levels.

In its implementation of the Telecommunications Act, the FCC
established federal universal service requirements that affect commercial mobile
radio service operators. Under the FCC's rules, commercial mobile radio service
providers are potentially eligible to receive universal service subsidies for
the first time; however, they are also required to contribute to the federal
universal service fund and can be required to contribute to state universal
funds. Many states also are moving forward to develop state universal service
fund programs. A number of these state funds require contributions, varying
greatly from state to state, from commercial mobile radio service providers. The
FCC's universal service order was modified on appeal in the U.S. Court of
Appeals for the Fifth Circuit. The court's ruling has had the effect of reducing
commercial mobile radio service provider support payments required for the
federal universal service programs.

On August 1, 1996, the FCC released a report and order expanding the
flexibility of cellular, PCS and other commercial mobile radio service providers
to provide fixed as well as mobile services. These fixed services include, but
need not be limited to, wireless local loop services, for example, to apartment
and office buildings, and wireless backup services to private branch exchange or
switchboards and local area networks, to be used in the event of interruptions
due to weather or other emergencies. The FCC has not yet decided whether fixed
services provided on a co-primary basis to mobility services should be subjected
to universal service obligations, or how such fixed services should be
regulated, but it has proposed a presumption that they be regulated as
commercial mobile radio service services. If the fixed services are provided as
an ancillary service to a carrier's mobility services, the FCC has decided that
such fixed services should be regulated as commercial mobile radio services.

The FCC has adopted rules on telephone number portability that will
enable customers to migrate their landline and cellular telephone numbers to
cellular or PCS providers and from a cellular or PCS provider to another service
provider. On February 8, 1999, the FCC extended the deadline for compliance with
this requirement to November 24, 2002, subject to any later determination that
number portability is necessary to conserve telephone numbers. The FCC has also
adopted rules requiring cellular and PCS providers to provide functions to
facilitate electronic surveillance by law enforcement officials by June 30,
2000, and has proposed to adopt certain additional obligations furthering
provision of these functions. Representatives of the cellular and PCS industry
are challenging the surveillance rules. Additionally, it is not clear that
commercial mobile radio service providers will be able to comply with the rules'
compatibility requirements by the current deadline of June 30, 2000; nor is it
clear whether the FCC will grant waivers to extend the deadline or what the
scope of penalties for failing to comply may be.

The FCC has determined that the interstate, interexchange offerings,
commonly referred to as long distance, of commercial mobile radio service
providers are subject to the interstate, interexchange rate averaging and
integration provisions of the Communications Act. Rate averaging requires us to
average our interstate long distance commercial mobile radio service rates
between high cost and urban areas. The FCC has delayed implementation of the



rate integration requirements with respect to wide area rate plans we offer
pending further reconsideration of its rules. The FCC also delayed the
requirement to integrate commercial mobile radio service long distance rates
among commercial mobile radio service affiliates. On December 31, 1998, the FCC
reaffirmed, on reconsideration, that its interexchange rate integration rules
apply to interexchange commercial mobile radio service services. The FCC
announced it would initiate a further proceeding to determine how integration
requirements apply to typical commercial mobile radio service offerings,
including one-rate plans. Until this further proceeding is concluded, the FCC
will enforce long distance rate integration on our services only where we
separately state a long distance toll charge and bill to our customers. To the
extent that the AT&T Wireless Group offers services subject to the FCC's rate
integration and averaging requirements, these requirements generally reduce its
pricing flexibility. We cannot assure you that the FCC will decline to impose
rate integration or averaging requirements on the AT&T Wireless Group or decline
to require it to integrate its commercial mobile radio service long distance
rates across its commercial mobile radio service affiliates.

The FCC recently adopted new rules limiting the use of customer
proprietary network information by telecommunications carriers in marketing a
broad range of telecommunications and other services to their customers and the
customers of affiliated companies. The rules were struck down by the federal
circuit court in 1999, and their effectiveness has been stayed pending the
court's review of a petition to the FCC for reconsideration. Even if the rules
are reinstated, the AT&T Wireless Group does not anticipate that they will
result in a significant adverse impact on its financial position, results of
operation or liquidity.

In addition, state commissions have become increasingly aggressive in
their efforts to conserve numbering resources. These efforts may impact wireless
service providers disproportionately by imposing additional costs or limiting
access to numbering resources. Examples of state conservation methods include:
number pooling, number rationing and code sharing. A number of states have
petitioned the FCC for authority to adopt "technology specific" overlays that
would require wireless providers to obtain telephone numbers out of a separate
area code and may require wireless providers to change their customers'
telephone numbers. The FCC approval and the states' subsequent implementation of
such "technology specific overlays" could increase wireless providers' cost of
doing business and impact their ability to market services. On June 2, 1999, the
FCC released a notice of proposed rulemaking soliciting comments on a variety of
administrative and technical measures that would promote more efficient
allocation and use of numbering resources. Adoption of some of the proposed
methods could have a disproportionate impact on commercial mobile radio services
providers.

The FCC is also considering adopting rules to govern customer billing
by commercial mobile radio services providers and applied a number of these
rules to commercial mobile radio service providers. The FCC adopted detailed
billing rules for landline telecommunications service providers and is
considering whether to extend the remaining rules to commercial mobile radio
services providers. The FCC may require that more billing detail be provided to
consumers, which could add to the expense of the billing process as systems are
modified to conform to any new requirements. The FCC also is considering whether
carriers that decide to pass through their mandatory universal service
contributions to their customers should be required to provide a full
explanation of the program, and whether to ensure that the carriers that pass
through their contribution do not recover amounts greater than their mandatory



contributions from their customers. Adoption of some of the FCC's proposals
could increase the complexity of our billing processes and restrict our ability
to bill customers for services in the most commercially advantageous way.

The FCC has adopted an order that determines the obligations of
telecommunications carriers to make their services accessible to individuals
with disabilities. The order requires telecommunications services providers to
offer equipment and services that are accessible to and useable by persons with
disabilities. While the rules exempt telecommunications carriers from meeting
general disability access requirements if such results are not readily
achievable, it is not clear how liberally the FCC will construe this exemption.
Accordingly, the rules require us to make material changes to our network,
product line, or services at our expense.

In June 1999, the FCC initiated an administrative rulemaking proceeding
to help facilitate the offering of calling party pays as an optional wireless
service. Under the calling party pays service, the party placing the call to a
wireless customer pays the wireless airtime charges. Most wireless customers in
the United States now pay both to place calls and to receive them. Adoption of a
calling party pays system on a widespread basis could make commercial mobile
radio service providers more competitive with traditional landline
telecommunications providers for the provision of regular telephone service.

State regulation and local approvals

State and local governments are preempted from regulating either market
entry by, or the rates of, wireless operators. However, state governments can
regulate other terms and conditions of wireless service and several states have
imposed (or have proposed legislation that will impose) various consumer
protection regulations on the wireless industry. States also may impose their
own universal service support regimes on wireless and other telecommunications
carriers, similar to the requirements that have been established by the FCC. At
the local level, wireless facilities typically are subject to zoning and land
use regulation. State and local jurisdictions may also impose some conditions on
a driver's use of wireless technology while operating a motor vehicle. However,
under the federal Telecommunications Act, neither local nor state governments
may categorically prohibit the construction of wireless facilities in any
community.

Cable Regulation and Legislation

The operation of cable television systems is extensively regulated by
the FCC, some state governments and most local governments. The
Telecommunications Act removes barriers to competition in both the cable
television market and the local telephone market and reduces the scope of cable
rate regulation.

The Telecommunications Act required the FCC to implement numerous
rulemakings, the final outcome of which cannot yet be determined due to court
challenges. Moreover, Congress and the FCC have frequently revisited the subject
of cable television regulation and may do so again. Future legislative and
regulatory changes could adversely affect AT&T Broadband's operations. This
section briefly summarizes key laws and regulations currently affecting the
growth and operation of AT&T Broadband's cable systems.

Cable Rate Regulation. The 1992 Cable Act imposed an extensive rate
regulation regime on the cable television industry, which limited the ability of



cable companies to increase subscriber fees. Under that regime, all cable
systems were subjected to rate regulation, unless they faced "effective
competition" in their local franchise area. Federal law now defines "effective
competition" on a community-specific basis as requiring satisfaction of
conditions rarely satisfied in the current marketplace.

Although the FCC establishes all cable rate rules, local government
units (commonly referred to as local franchising authorities or LFAs) are
primarily responsible for administering the regulation of the lowest level of
cable -- the basic service tier (BST), which typically contains local broadcast
stations and PEG access channels. Before an LFA begins BST rate regulation, it
must certify to the FCC that it will follow applicable federal rules, and many
LFAs have voluntarily declined to exercise this authority. LFAs also have
primary responsibility for regulating cable equipment rates. Under federal law,
charges for various types of cable equipment must be unbundled from each other
and from monthly charges for programming services, and priced no higher than the
operator's actual cost, plus an 11.25% rate of return.

The FCC historically administered rate regulation of any cable
programming service tiers (CPST), which typically contain satellite-delivered
programming. Under the Telecommunications Act, the FCC's ability to regulate
CPST rates expired on March 31, 1999. The FCC has taken the position that it
will adjudicate pending CPST complaints but will strictly limit its review and
possible refund orders to the time period predating March 31, 1999.

Cable Entry Into Telecommunications. The Telecommunications Act
provides that no state or local laws or regulations may prohibit or have the
effect of prohibiting any entity from providing any interstate or intrastate
telecommunications service. States are authorized, however, to impose
"competitively neutral" requirements regarding universal service, public safety
and welfare, service quality, and consumer protection. State and local
governments also retain their authority to manage the public rights-of-way.
Although the Telecommunications Act clarifies that traditional cable franchise
fees may be based only on revenues related to the provision of cable television
services, it also provides that LFAs may require reasonable, competitively
neutral compensation for management of the public rights-of-way when cable
operators provide telecommunications service. In 1999, there were several
conflicting and inconclusive federal court decisions that addressed the issues
of lawful "management of the right-of-ways" and "competitively neutral
compensation." The Telecommunications Act prohibits LFAs from requiring cable
operators to provide telecommunications service or facilities as a condition of
a franchise grant, renewal or transfer, except that LFAs argue they can seek
"institutional networks" as part of such franchise negotiations. The favorable
pole attachment rates afforded cable operators under federal law can be
increased by utility companies owning the poles during a five year phase-in
period beginning in 2001, if the cable operator provides telecommunications
service, as well as cable service, over its plant. The FCC has clarified that a
cable operator's provision of Internet service does not affect the favorable
pole rates.

Cable entry into telecommunications will be affected by the regulatory
landscape now being fashioned by the FCC and state regulators. One critical
component of the Telecommunications Act intended to facilitate the entry of new
telecommunications providers (including cable operators) is the interconnection
obligation imposed on all telecommunications carriers. This requires, for
example, that the incumbent local telephone company must allow new competing
telecommunications providers to connect to the local telephone distribution



system. In a January 1999 decision, the United States Supreme Court upheld the
FCC's fundamental interconnection requirements.

Cable Systems Providing Internet Service. Although there is at present
no significant federal regulation of cable system delivery of Internet services,
and the FCC recently issued several reports finding no immediate need to impose
such regulation, this situation may change as cable systems expand their
broadband delivery of Internet services. In particular, proposals have been
advanced at the FCC and Congress that would require cable operators to provide
access to unaffiliated Internet service providers and online service providers.
Additionally, some local franchising authorities are considering the imposition
of mandatory Internet access requirements as part of cable franchise renewals or
transfers. A federal district court in Portland, Oregon recently upheld the
legal ability of local franchising authorities to impose such conditions, but an
appeal was filed with the Ninth Circuit Court of Appeals, oral argument has been
held and the parties are awaiting a decision. Other local authorities have
imposed or may impose mandatory Internet access requirements on cable operators.
Finally, several states are considering legislation that would require mandatory
access for unafffiliated Internet service providers. These developments could,
if they become widespread, burden the capacity of cable systems and complicate
and delay plans for providing Internet service.

Telephone Company Entry Into Cable Television. The Telecommunications
Act allows telephone companies to compete directly with cable operators by
repealing the historic telephone company/cable company cross-ownership ban and
the FCC's video dialtone regulations. This will allow LECs, including the RBOCs,
to compete with cable operators both inside and outside their telephone service
areas. Because of their resources, LECs could be formidable competitors, and
certain LECs have begun offering cable service.

Under the Telecommunications Act, a LEC or other entity providing video
programming to customers will be regulated as a traditional cable operator
(subject to local franchising and federal regulatory requirements), unless it
elects to provide its programming via an "open video system" (OVS). It was
anticipated that the primary benefit of using an OVS regulatory model was to
avoid the need to obtain a local franchise prior to providing services. However,
a January 1999 federal court of appeals decision held that OVS providers can be
required to obtain such a franchise. To be eligible for OVS status, the provider
cannot occupy more than one-third of the system's activated channels when demand
for channels exceeds supply. Nor can it discriminate among programmers or
establish unreasonable rates, terms or conditions for service.

Although LECs and cable operators can now expand their offerings across
traditional service boundaries, the general prohibitions remain on LEC buyouts
(i.e., any ownership interest exceeding 10 percent) of co-located cable systems,
cable operator buyouts of co-located LEC systems, and joint ventures among cable
operators and LECs in the same market. The Telecommunications Act provides a few
limited exceptions to this buyout prohibition.

Electric Utility Entry Into
Telecommunications/Cable Television. The
Telecommunications Act provides that registered utility holding companies and
subsidiaries may provide telecommunications services, information services, and
other services or products subject to the jurisdiction of the FCC,
notwithstanding the Public Utilities Holding Company Act. Electric utilities
must establish separate subsidiaries, known as "exempt telecommunications
companies" and must apply to the FCC for operating authority. Again, because of
their resources, electric utilities could be formidable competitors.



Cable Television Ownership Restrictions. Pursuant to the 1992 Cable
Act, the FCC adopted regulations establishing a 30% limit on the number of homes
nationwide that a cable operator may reach through cable systems in which it
holds an attributable interest with an increase to 35% if the additional cable
systems are minority controlled. The FCC stayed the effectiveness of its
ownership limits pending the appeal of a September 16, 1993 decision by the
United States District Court for the District of Columbia which, among other
things, found unconstitutional the provision of the 1992 Cable Act requiring the
FCC to establish such ownership limits. If the ownership limits are determined
on appeal to be constitutional, they may affect AT&T Broadband's ability to
acquire attributable interests in additional cable systems including the pending
MediaOne Merger.

The FCC recently completed its reconsideration of both the national
subscriber cap formula and the manner in which cable ownership is attributed.
Although the new FCC formula increased the number of subscribers AT&T Broadband
may "own", it is not yet clear under the new attribution rules whether the
pending MediaOne Merger will be considered compliant with the new ownership cap.

The FCC previously adopted regulations limiting carriage by the cable
operator of national programming services in which that operator holds an
attributable interest to 40% of the activated channels on each of the cable
operator's systems. The rules provide for the use of two additional channels or
a 45% limit, whichever is greater, provided that the additional channels carry
minority controlled programming services. The regulations also grandfather
existing carriage arrangements which exceed the channel limits, but require new
channel capacity to be devoted to unaffiliated programming services until the
system achieves compliance with the regulations. These channel occupancy limits
apply only up to 75 activated channels on the cable system, and the rules do not
apply to local or regional programming services.

The Telecommunications Act eliminates statutory restrictions on
broadcast/cable cross-ownership (including broadcast network/cable
restrictions), but leaves in place existing FCC regulations prohibiting local
cross-ownership between television stations and cable systems. The
Telecommunications Act leaves in place existing restrictions on cable
cross-ownership with Satellite Master Antenna Television (SMATV) and
multi-channel multi-point distribution systems (MMDS) facilities, but lifts
those restrictions where the cable operator is subject to effective competition.
In January 1995, however, the FCC adopted regulations which permit cable
operators to own and operate SMATV systems within their franchise area, provided
that such operation is consistent with local cable franchise requirements.

Must Carry/Retransmission Consent. The 1992 Cable Act contains
broadcast signal carriage requirements that allow local commercial television
broadcast stations to elect once every three years between requiring a cable
system to carry the station ("must carry") or negotiating for payments for
granting permission to the cable operator to carry the station ("retransmission
consent"). Less popular stations typically elect must carry, and more popular
stations typically elect retransmission consent. Must carry requests can dilute
the appeal of a cable system's programming offerings, and retransmission consent
demands may require substantial payments or other concessions (e.g. a
requirement that the cable system also carry the local broadcaster's affiliated
cable programming service). Either option has a potentially adverse effect on
AT&T Broadband's business. The burden associated with must-carry obligations
could dramatically increase if television broadcast stations proceed with
planned conversions to digital transmissions and if the FCC determines in a
pending rulemaking that cable systems must carry all analog and digital signals
transmitted by the television stations.



Access Channels. LFAs can include franchise provisions requiring cable
operators to set aside certain channels for PEG access programming. Federal law
also requires a cable system with 36 or more channels to designate a portion of
its activated channel capacity (either 10% or 15%) for commercial leased access
by unaffiliated third parties. The FCC has adopted rules regulating the terms,
conditions and maximum rates a cable operator may charge for use of this
designated channel capacity, but use of commercial leased access channels has
been relatively limited. In February of 1997, the FCC released revised rules
which mandated a modest rate reduction that has made commercial leased access a
more attractive option for third party programmers, particularly for part-time
leased access carriage.

"Anti-Buy Through" Provisions. Federal law requires each cable system
to permit customers to purchase premium or pay-per-view video programming
offered by the operator on a per-channel or a per-program basis without the
necessity of subscribing to any tier of service (other than the basic service
tier) unless the system's lack of addressable converter boxes or other
technological limitations does not permit it to do so. The statutory exemption
for cable systems that do not have the technological capability to comply
expires in October 2002, but the FCC may extend that period if deemed necessary.

Access to Programming. To spur the development of independent cable
programmers and competition to incumbent cable operators, the 1992 Cable Act
imposed restrictions on the dealings between cable operators and cable
programmers. Of special significance from a competitive business posture, the
1992 Cable Act precludes satellite video programmers affiliated with cable
operators from favoring cable operators over competing multichannel video
programming distributors (such as DBS and MMDS distributors). This provision
limits the ability of vertically integrated satellite cable programmers to offer
exclusive programming arrangements to AT&T Broadband. Both Congress and the FCC
have considered proposals that would expand the program access rights of cable's
competitors, including the possibility of subjecting both terrestrially
delivered video programming and video programmers who are not affiliated with
cable operators to all program access requirements.

Inside Wiring; Subscriber Access. In an order issued in 1997, the FCC
established rules that require an incumbent cable operator upon expiration or
termination of an MDU service contract to sell, abandon, or remove "home run"
wiring that was installed by the cable operator in a MDU building. These inside
wiring rules are expected to assist building owners in their attempts to replace
existing cable operators with new programming providers who are willing to pay
the building owner a higher fee, where such a fee is permissible. The FCC has
also proposed abrogating all exclusive MDU contracts held by incumbent cable
operators, but allowing such contracts when held by new entrants. In another
proceeding, the FCC has preempted restrictions on the deployment of private
antenna on rental property within the exclusive use of a tenant, such as
balconies and patios. This FCC ruling may limit the extent to which multiple
dwelling unit owners may enforce certain aspects of MDU argreements which
otherwise prohibit, for example, placement of digital broadcast satellite
receiver antennae in MDU areas under the exclusive occupancy of a renter. These
developments may make it more difficult for AT&T Broadband to provide service in
MDUs.

Other FCC Regulations. In addition to the FCC regulations noted above,
there are other FCC regulations covering such areas as equal employment
opportunity, customer privacy, programming practices (including, among other
things, syndicated program exclusivity, network program nonduplication, local



sports blackouts, indecent programming, lottery programming, political
programming, sponsorship identification, children's programming advertisements
and closed captioning), registration of cable systems and facilities licensing,
maintenance of various records and public inspection files, frequency usage,
lockbox availability, antenna structure notification, tower marking and
lighting, consumer protection and customer service standards, technical
standards, consumer electronics equipment compatibility and emergency alert
systems.

The FCC recently ruled that cable customers must be allowed to
purchase cable converters from third parties and established a multi-year
phase-in during which security functions, which would remain in the operator's
exclusive control, would be unbundled from basic converter functions, which
could then be satisfied by third party vendors.

The FCC has the authority to enforce its regulations through the
imposition of substantial fines, the issuance of cease and desist orders and/or
the imposition of other administrative sanctions, such as the revocation of FCC
licenses needed to operate certain transmission facilities used in connection
with cable operations.

Copyright. Cable television systems are subject to federal copyright
licensing covering carriage of television and radio broadcast signals. In
exchange for filing certain reports and contributing a percentage of their
revenue to a federal copyright royalty pool (such percentage varies depending on
the size of the system and the number of distant broadcast television signals
carried), cable operators can obtain blanket permission to retransmit
copyrighted material on broadcast signals. The possible modification or
elimination of this compulsory copyright license is subject to continuing review
and could adversely affect AT&T Broadband's ability to obtain desired broadcast
programming. In addition, the cable industry pays music licensing fees to
Broadcast Music, Inc. and is negotiating a similar arrangement with the American
Society of Composers, Authors and Publishers. Copyright clearances for
nonbroadcast programming services are arranged through private negotiations.

State and Local Regulation. Cable television systems generally are
operated pursuant to nonexclusive franchises granted by a municipality or other
state or local government entity. The Telecommunications Act clarified that the
need for an entity providing cable services to obtain a local franchise depends
solely on whether the entity crosses public rights of way. Federal law now
prohibits franchise authorities from granting exclusive franchises or from
unreasonably refusing to award additional franchises covering an existing cable
system's service area. Cable franchises generally are granted for fixed terms
and in many cases are terminable if the franchisee fails to comply with material
provisions. Non-compliance by the cable operator with franchise provisions may
also result in monetary penalties.

The terms and conditions of franchises vary materially from
jurisdiction to jurisdiction. Each franchise generally contains provisions
governing cable operations, service rates, franchise fees, system construction
and maintenance obligations, system channel capacity, design and technical
performance, customer service standards, and indemnification protections. A
number of states subject cable television systems to the jurisdiction of
centralized state governmental agencies. Although LFAs have considerable
discretion in establishing franchise terms, there are certain federal
limitations. For example, LFAs cannot insist on franchise fees exceeding 5% of



the system's gross revenue, cannot dictate the particular technology used by the
system, and cannot specify video programming other than identifying broad
categories of programming.

Federal law contains renewal procedures designed to protect incumbent
franchisees against arbitrary denials of renewal. Even if a franchise is
renewed, the franchise authority may seek to impose new and more onerous
requirements such as significant upgrades in facilities and services or
increased franchise fees and funding for PEG channels as a condition of renewal.
Similarly, if a franchise authority's consent is required for the purchase or
sale of a cable system or franchise, such authority may attempt to impose more
burdensome or onerous franchise requirements in connection with a request for
consent. Historically, franchises have been renewed for cable operators that
have provided satisfactory services and have complied with the terms of their
franchises.

Proposed Changes in Regulation. The regulation of cable television
systems at the federal, state and local levels is subject to the political
process and has been in constant flux over the past decade. Material changes in
the law and regulatory requirements must be anticipated and there can be no
assurance that AT&T Broadband's business will not be affected adversely by
future legislation, new regulation or deregulation.

COMPETITION

Competition in communications services is based on price and pricing
plans, the types of services offered, customer service, access to customer
premises, and communications quality, reliability and availability, as well as,
for business customers, the ability to provide high quality data communication
services and technical support. AT&T's principal competitors include
MCIWorldcom, Inc., Sprint Corporation, the RBOCs and GTE Corporation. AT&T also
experiences significant competition in long distance from dial around resellers.

The ILECs have very substantial capital and other resources, long
standing customer relationships and extensive existing facilities and network
rights-of-way and are AT&T's primary competitors in the local services market.
In addition, it is anticipated that a number of long distance telecommunication,
wireless and cable service providers and others will enter the local services
market in competition with AT&T. Some of these potential competitors have
substantial financial and other resources. AT&T will also compete in the local
services market with a number of CLECs, a few of which have existing local
networks and significant financial resources.

Competition for subscribers among wireless service providers is based
principally upon the services and features offered, call quality, customer
service, system coverage and price. The AT&T Wireless Group's ability to compete
successfully will 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 pricing strategies. The AT&T Wireless Group's primary competitors
are Vodafone AirTouch, BellSouth, Bell Atlantic, GTE, Nextel Communications,
Inc., SBC, VoiceStream Communications and Sprint.

In addition, the wireless communications industry has been experiencing
significant consolidation and the AT&T Wireless Group expects that this
consolidation will continue. The previously announced mergers or joint ventures
of Bell Atlantic/GTE/Vodafone/AirTouch, MCIWorldCom/Sprint and SBC/Ameritech



will create large, well-capitalized competitors with substantial financial,
technical, marketing and other resources to respond to the AT&T Wireless Group's
offerings. Assuming these mergers or ventures were completed today, the AT&T
Wireless Group estimates that its ranking would decline to second in U.S.
revenue, third in U.S. subscriber share and fourth in terms of U.S. population
covered by licenses, or POPs. As a result, these competitors may be able to
offer nationwide services and plans more quickly and more economically than the
AT&T Wireless Group and to obtain roaming rates that are more favorable than
those obtained by the AT&T Wireless Group, and may be better able to respond to
offers of the AT&T Wireless Group.

The AT&T Wireless Group's cellular operations have always experienced
direct competition from the second cellular licensee in each market. Beginning
in 1997, the AT&T Wireless Group began experiencing competition from as many as
six license holders in certain markets. Competition from new providers in the
AT&T Wireless Group's markets will continue to increase as the networks of
license holders are built out over the next several years. In addition, the FCC
is likely to offer additional spectrum for wireless mobile licenses in the
future using existing or new technologies.

Cable television competes for customers in local markets with other
providers of entertainment, news and information. The competitors in these
markets include broadcast television and radio, newspapers, magazines and other
printed material, motion picture theatres, video cassettes and other sources of
information and entertainment including directly competitive cable television
operations and internet service providers. The Cable Acts are designed to
increase competition in the cable television industry. There are alternative
methods of distributing the same or similar video programming offered by cable
television systems. These include DBS (allowing the subscriber to receive video
services directly via satellite using a relatively small dish), telephone
networks (whether it is through wireless cable, or through upgraded telephone
networks), utility company networks, MMDS (which deliver programming services
over microwave channels received by customers with special antennas),
competitive, non-exclusive franchises, city provided cable services, SMATV
systems (which provide multichannel program services directly to hotel, motel,
apartment, condominium and similar multi-unit complexes within a cable
television system's franchise area, generally free of any regulation by state
and local governmental authorities). In addition to competition for customers,
the cable television industry competes with broadcast television, radio, the
print media and other sources of information and entertainment for advertising
revenue. Additionally, as AT&T begins to offer new services such as high speed
Internet access and telephone services, there will be significant competition
from both the local telephone companies and new providers of such services.

AT&T currently faces significant competition and expects that the level
of competition will continue to increase. As competitive, regulatory and
technological changes occur, including those occasioned by the
Telecommunications Act, AT&T anticipates that new and different competitors will
enter and expand their position in the communications services markets. These
may include entrants from other segments of the communications and information
services industry or global competitors seeking to expand their market
opportunities. Many such new competitors are likely to enter with a strong
market presence, well recognized names and pre-existing direct customer
relationships.

The Telecommunications Act has already impacted the competitive
environment. Anticipating changes in the industry, non-RBOC LECs, which are not



required to implement the Telecommunications Act's competitive checklist prior
to offering long distance in their home markets, have begun integrating their
local service offerings with long distance offerings in advance of AT&T offering
combined local and long distance service in these areas, adversely affecting
AT&T's revenues and earnings in these service regions.

In addition, the Telecommunications Act will permit RBOCs to provide
interLATA interexchange services after demonstrating to the FCC that such
provision is in the public interest and satisfying the conditions for developing
local competition established by the Telecommunications Act. The RBOCs have
petitioned the FCC for permission to provide interLATA interexchange services in
one or more states within their home market; to date the FCC granted only one
petition. In December 1999, Bell Atlantic became the first RBOC to obtain
approval to provide long distance in a state within its home territory, in New
York. In January 2000 Southwestern Bell applied to the FCC for authorization to
provide long distance service in Texas; by law, the FCC is required to rule on
the application in April 2000.

To the extent that the RBOCs obtain in-region interLATA authority
before the Telecommunications Act's checklist of conditions have been fully or
satisfactorily implemented and adequate facilities-based local exchange
competition exists, there is a substantial risk that AT&T and other
interexchange service providers would be at a disadvantage to the RBOCs in
providing both local service and combined service packages. Because it is widely
anticipated that substantial numbers of long distance customers will seek to
purchase local, interexchange and other services from a single carrier as part
of a combined or full service package, any competitive disadvantage, inability
to profitably provide local service at competitive rates or delays or
limitations in providing local service or combined service packages could
adversely affect AT&T's future revenue and earnings. In any event, the
simultaneous entrance of numerous new competitors for interexchange and combined
service packages is likely to adversely affect AT&T's future long distance
revenue and could adversely affect future earnings.

Furthermore, in February 1997, a General Agreement on Trade in Services
(GATS) was reached under the World Trade Organization. The GATS, which became
effective January 1, 1998, is designed to open each country's domestic
telecommunications markets to foreign competitors. The GATS, and future trade
agreements, may accelerate the entrance into the U.S. market of foreign
telecommunications providers, certain of whom are likely to possess dominant
home market positions in which there is not effective competition. The GATS may
also permit AT&T's entrance into other markets as only a small number of
countries refused to eliminate their foreign ownership restrictions.

In addition to the matters referred to above, various other factors,
including technological hurdles, market acceptance, start-up and ongoing costs
associated with the provision of new services and local conditions and
obstacles, could adversely affect the timing and success of AT&T's entrance into
the local exchange services market and AT&T's ability to offer combined service
packages that include local service.

EMPLOYEE RELATIONS

At December 31, 1999 AT&T employed approximately 148,000 persons in its
operations, approximately 96.5% of whom are located domestically. About 28% of
the domestically located employees of AT&T are represented by unions. Of those
so represented, about 94% are represented by the Communications Workers of



America (CWA), which is affiliated with the AFL-CIO; about 5% by the
International Brotherhood of Electrical Workers (IBEW), which is also affiliated
with the AFL-CIO. In addition, there is a very small remainder of domestic
employees represented by other unions. Labor agreements with most of these
unions extend through May 2002.

SEGMENT, OPERATING REVENUE AND RESEARCH AND DEVELOPMENT
EXPENSE INFORMATION

For information about the Company's research and development expense,
see Note 2 to the Consolidated Financial Statements. For information about the
consolidated operating revenues contributed by the Company's major classes of
products and services, see the revenue tables and descriptions on pages 14 and
19 through 25 of the Company's annual report to shareholders for the year ended
December 31, 1999. All such information is incorporated herein by reference
pursuant to General Instruction G(2).

LIBERTY MEDIA GROUP

The economic performance of the Liberty Media Group are reflected in
the Liberty Media Group tracking stock. A description of the Liberty Media Group
is included as Exhibit 99 to this Form 10-K.

FORWARD LOOKING STATEMENTS

This Form 10-K contains certain forward-looking statements within the
meaning of the Private Securities Litigation Reform Act of 1995 with respect to
the financial condition, results of operations, cash flows, dividends, financing
plans, business strategies, operating efficiencies or synergies, budgets,
capital and other expenditures, competitive positions, growth opportunities for
existing products, benefits from new technology, plans and objectives of
management, and other matters.

Statements in this Form 10-K that are not historical facts are hereby
identified as "forward looking statements" for the purpose of the safe harbor
provided by Section 27A of the Securities Act of 1933 and Section 21E of the
Securities Exchange Act of 1934. Any Form 10-K, Annual Report to Shareholders,
Form 10-Q or Form 8-K of AT&T may include forward looking statements. In
addition, other written or oral statements which constitute forward looking
statements have been made and may in the future be made by or on behalf of AT&T,
including statements concerning future operating performance, business
prospects, capital needs, AT&T's share of new and existing markets, AT&T's
short- and long-term revenue and earnings growth rates, general industry growth
rates and AT&T's performance relative thereto. These forward looking statements
are necessarily estimates reflecting the best judgment of senior management that
rely on a number of assumptions concerning future events, many of which are
outside of AT&T's control, and involve a number of risks and uncertainties that
could cause actual results to differ materially from those suggested by the
forward-looking statements. These forward-looking statements should, therefore,
be considered in light of various important factors, including those set forth
in this Form 10-K. Important factors that could cause actual results to differ
materially from estimates or projections contained in the forward-looking
statements include, without limitation:



- the adoption and implementation of balanced and effective rules and
regulations by the FCC and state regulatory agencies to implement the
provisions of the Telecommunications Act; the outcome of litigation
relative thereto; and the impact of regulatory changes relating to
access reform, the unbundling of cable facilities and international
settlement reform;

- success and market acceptance for new initiatives, including cable
telephony and fixed wireless, many of which are untested; the level
and timing of the growth and profitability of new initiatives;
start-up costs associated with entering new markets, including
advertising and promotional efforts; successful deployment and
technological implementation of new systems and applications to
support new initiatives; the ability to address the needs of
customers for broadband and Internet access; and local conditions and
obstacles;

- competitive pressures, including pricing pressures, alternative
routing developments, and the ability to offer combined service
packages that include local service; technological developments,
including the rate of technological advances in, and implementation
of, internet telephony services that compete with traditional
telephony services; the extent and pace at which different
competitive environments develop for each segment of the
telecommunications industry; the extent at and duration for which
competitors from each segment of the telecommunications industry are
able to offer combined or full service packages prior to AT&T being
able to; and the degree to which AT&T experiences material
competitive impacts to its traditional service offerings prior to
achieving adequate local service entry;

- the availability, terms and deployment of capital; the impact of
regulatory and competitive developments on capital outlays; the
ability to achieve cost savings and realize productivity
improvements; the ability to effectively integrate operations of
acquired entities with AT&T, the timing of approval of, and any
conditions imposed on, the completion of the MediaOne merger; the
ability to realize cost-saving and revenue synergies from the
MediaOne merger; the ability to successfully implement cable
telephony joint ventures; the ability to expand the cable footprint
and the wireless footprint in an economical and expeditious manner;
and the ability to enter into agreements which provide for reasonable
roaming rates for wireless services; and

- the ability to attract and retain qualified management employees in
all key areas of the business; general economic conditions,
government and regulatory policies, and business conditions in the
communications industry.

The words "estimate," "project," "intend," "expect," "believe" and
similar expressions are intended to identify forward-looking statements. These
forward-looking statements are found at various places throughout this Form 10-K
and throughout the other documents incorporated herein by reference. Readers are
cautioned not to place undue reliance on these forward-looking statements, which
speak only as of the date hereof. AT&T undertakes no obligation to publicly
release any revisions to these forward-looking statements to reflect events or
circumstances after the date hereof or to reflect the occurrence of
unanticipated events.



ITEM 2. PROPERTIES.

The properties of AT&T Corp. consist primarily of plant and equipment
used to provide long distance and wireless telecommunications services and cable
television services and administrative office buildings. AT&T's owns and leases
properties to support its offices, facilities and equipment.

Telecommunications plant and equipment consists of: central office
equipment, including switching and transmission equipment; connecting lines
(cables, wires, poles, conduits, etc.); wireless cell sites, antennas and
wireless switching facilities; land and buildings; and miscellaneous properties
(work equipment, furniture, plant under construction, etc.). The majority of the
connecting lines are on or under public roads, highways and streets and
international and territorial waters. The remainder are on or under private
property. Physical cable television properties, which are located throughout the
United States, consist of system components, motor vehicles, miscellaneous
hardware, spare parts and other components. AT&T also operates a number of sales
offices, customer care centers, and other facilities, such as research and
development laboratories.

AT&T continues to manage the deployment and utilization of its assets
in order to meet its global growth objectives while at the same time ensuring
that these assets are generating value for the shareholder. AT&T will continue
to manage its asset base consistent with globalization initiatives, marketplace
forces, productivity growth and technology change.

ITEM 3. LEGAL PROCEEDINGS.

In the normal course of business, AT&T Corp. is subject to proceedings,
lawsuits and other claims, including proceedings under government laws and
regulations related to environmental and other matters. Such matters are subject
to many uncertainties and outcomes are not predictable with assurance.
Consequently, AT&T Corp. is unable to ascertain the ultimate aggregate amount of
monetary liability or financial impact with respect to these matters at December
31, 1999. While these matters could affect operating results of any one quarter
when resolved in future periods, it is management's opinion that after final
disposition, any monetary liability or financial impact to AT&T Corp. beyond
that provided for at year-end would not be material to AT&T Corp.'s annual
consolidated financial position or results of operations.

On July 6, 1997, MCI Telecommunications Corp. and Ronald A. Katz
Technology Licensing, L.P. filed suit in United States District Court in
Philadelphia, Pennsylvania against AT&T. The suit alleges that a number of AT&T
services infringe patents owned by Katz but licensed to MCI for enforcement
against AT&T. This matter is currently in discovery. Based on review to date, it
is management's opinion that the claims do not present any material monetary
liability or financial impact to AT&T that is not subject to patent indemnity
agreements with third-party equipment vendors.

AT&T is also a named party in a number of environmental actions, none
of which is material to the consolidated financial statements or business of the
Company. In addition, pursuant to the Separation and Distribution Agreement by
and among AT&T, Lucent, and NCR, dated as of February 1, 1996, and amended and
restated as of March 29, 1996, Lucent has assumed liability, subject to the
liability sharing provisions of that agreement, for a number of actions in which
AT&T remains a named party. AT&T is working to be released as a party to these
actions, although there can be no assurance that it will be successful in this
regard.



There are four environmental proceedings which are required to be
reported pursuant to Instruction 5.C. of Item 103 of Regulation S-K. In
September 1997, the government of the U.S. Virgin Islands filed suit in the
federal district court of the Virgin Islands against the Company, AT&T Submarine
Systems International ("SSI International"), A&L Underground, Inc., a contractor
for SSI International at that time, and other entities. In connection with the
purported 1996 release of non-toxic bentonite drilling mud within the coastal
region of St. Croix by the contractor, the suit seeks penalties for violations
of various federal and Virgin Island statutes; damages under several statutory
and common law theories; removal of the mud (which has since been completed to
the satisfaction of the federal agency that ordered the cleanup); and
restitution of response costs allegedly incurred by the Virgin Islands. SSI
International was a wholly owned subsidiary of AT&T at the time of the alleged
violation. On December 31, 1998 the Government of the U.S. Virgin Islands filed
an administrative complaint against AT&T of the Virgin Islands, Inc., seeking
$23 million in penalties (primarily for the release of drilling mud in 1996 in
conjunction with the construction of the St. Croix cable landing station). The
foregoing environmental proceeding is not material to the consolidated financial
statements or business of the Company and would not be reported but for
Instruction 5 C. of Item 103 of Regulation S-K, which requires disclosure of
such matters.

In addition, three proceedings involve matters for which Lucent has
assumed liability, as described above. On July 31, 1991, the United States
Environmental Protection Agency Region III issued a complaint pursuant to
Section 3008a of the Resource Conservation and Recovery Act alleging violations
of various waste management regulations at the Company's Richmond Works,
Richmond, Virginia. The complaint seeks a total of $4.2 million in penalties. In
addition, on July 31, 1991, the United States Environmental Protection Agency
filed a civil complaint in the U.S. District Court for the Southern District of
Illinois against the Company and nine other parties seeking enforcement of its
Comprehensive Environmental Response, Compensation and Liability Act ("CERCLA")
Section 106 cleanup order, issued in November 1990 for the NL Granite City
Superfund site, Granite, Illinois, past costs, civil penalties of $25,000 per
day and treble damages related to certain United States' costs. Finally, during
1994, AT&T Nassau Metals Corporation ("Nassau"), a wholly owned subsidiary of
AT&T, and the New York State Department of Environmental Conservation ("NYSDEC")
were engaged in negotiations over a study and cleanup of the Nassau plant
located on Richmond Valley Road in Staten Island, New York. During these
negotiations, in June 1994, NYSDEC presented Nassau with a draft consent order
which included not only provisions relating to site investigation and
remediation but also a provision for payment of a $3.5 million penalty for
alleged violations of hazardous waste management regulations. No formal
proceeding has been commenced by NYSDEC.

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

No matter was submitted to a vote of security holders in the fourth
quarter of the fiscal year covered by this report.



Executive Officers of the Registrant
(as of March 17, 2000)

Became AT&T
Name Age Executive Officer On
- ---- --- --------------------

C. Michael Armstrong* . 61 Chairman of the Board and
Chief Executive Officer . . . . . . 10-97

Harold W. Burlingame. . 59 Executive Vice President,
Communications and Human
Resources, AT&T Wireless Group . . 9-86

James Cicconi . . . . . 47 Executive Vice President-Law &
Government Affairs and
General Counsel . . . . . . . . . . 12-98

Mirian Graddick . . . . 45 Executive Vice President,
Human Resources . . . . . . . . . . 3-99

Mohan Gyani . . . . . . 48 Executive Vice President and
President & CEO, AT&T Wireless
Services . . . . . . . . . . . . . 1-00

Frank Ianna . . . . . . 50 Executive Vice President and
President, AT&T Network Services. . 3-97

Michael G. Keith. . . . 51 Executive Vice President - AT&T
Wireless Group . . . . . . . . . . 12-98

Richard J. Martin . . . 53 Executive Vice President, Public
Relations and Employee
Communication . . . . . . . . . . . 11-97

John C. Malone**. . . . 59 Chairman of the Board, Liberty
Media Corporation . . . . . . . . . 3-99

David C. Nagel. . . . . 55 President, AT&T Labs & Chief
Technology Officer . . . . . . . . 3-97

Charles H. Noski. . . . 47 Senior Executive Vice President
and Chief Financial Officer . . . . 12-99

John C. Petrillo. . . . 50 Executive Vice President, Corporate
Strategy and Business Development . 1-96

Richard Roscitt . . . . 48 Executive Vice President and
President, AT&T Business Services . 9-97

Daniel E. Somers. . . . 52 President and CEO, AT&T Broadband . . 5-97

John D. Zeglis**. . . . 52 President, AT&T, and Chairman and
Chief Executive Officer, AT&T
Wireless Group . . . . . . . . . . 9-86
- -----------
*Chairman of the Board of Directors and Chairman of the Executive
and Proxy Committees.
**Member of the Board of Directors.


All of the above executive officers have held high level managerial
positions with AT&T or its affiliates for more than the past five years, except
Messrs. Armstrong, Cicconi, Guyani, Malone, Nagel, Noski and Somers. Prior to
joining AT&T in October 1997, Mr. Armstrong was Chairman and Chief Executive
Officer of Hughes Electronics from 1991. Prior to joining AT&T in September 1998
as Senior Vice President-Law and Government Affairs, Mr. Cicconi was a Partner
at the law firm of Akin, Gump, Strauss, Houer and Feld, L.L.P. from 1991. Prior
to joining AT&T in January 2000, Mr. Gyani was Executive Vice President and
Chief Financial Officer of Airtouch Communications from 1995 to 1999, and
following the merger of Vodafone and Airtouch, was head of strategy and
corporate development at Vodafone Airtouch plc. Prior to joining AT&T, Dr.
Malone was President, Chairman and Chief Executive Officer of TCI from 1994. In
addition, Dr. Malone served as director of TCI Pacific Communications, Inc.
since 1996. Prior to joining AT&T in April 1996, Mr. Nagel was with Apple
Computer, serving as Senior Vice President from 1995 and General Manager from
1988 through 1995. Prior to joining AT&T in December 1999, Mr. Noski was
president and chief operating officer of Hughes Electronics Corporation. Prior
to joining AT&T in May 1997, Mr. Somers was Chairman and Chief Executive Officer
for Bell Cablemedia, plc, of London for two years and from 1992 to 1995, Mr.
Somers was Executive Vice President and Chief Financial Officer for Bell Canada
International.



PART II

Items 5. through 8.

The information required by these items is included in pages 12 through
55 and the inside back cover of the Company's annual report to shareholders for
the year ended December 31, 1999. Such information is incorporated herein by
reference, pursuant to General Instruction G(2). The referenced information from
the Company's annual report to shareholders has been filed as Exhibit 13 to this
document.

Item 9. Changes in and Disagreements with Accountants on
Accounting and Financial Disclosure.

There have been no changes in independent accountants and no
disagreements with independent accountants on any matter of accounting
principles or practices, financial statement disclosure, or auditing scope or
procedure during the last two years.

PART III

Items 10. through 13.

Information regarding executive officers required by Item 401 of
Regulation S-K is furnished in a separate disclosure in Part I of this report
because the Company did not furnish such information in its definitive proxy
statement prepared in accordance with Schedule 14A.

The other information required by Items 10 through 13 is included in
the Company's definitive proxy statement dated March 27, 2000: the third and
fourth paragraphs on page 7, the first and second paragraphs on page 8, the
first full paragraph on page 9 through the first full paragraph on page 21 and
the fourth paragraph on page 40 through page 71. Such information is
incorporated herein by reference, pursuant to General Instruction G(3).



PART IV

Item 14. Exhibits, Financial Statement Schedule, and
Reports on Form 8-K.

(a) Documents filed as a part of the report:

(1) Financial Statements:
Pages
-----

Report of Management ....................... *
Report of Independent Accountants .......... *


Statements:

Consolidated Statements of Income .......... *
Consolidated Balance Sheets ................ *
Consolidated Statements of Changes in
Shareowners' Equity ...................... *
Consolidated Statements of Cash Flows ...... *
Notes to Consolidated Financial Statements . *

(2) Financial Statement Schedule:

Report of Independent Accountants .......... 47

Schedule:

II -- Valuation and Qualifying Accounts .... 48

Separate financial statements of Liberty Media Group, which is
a "significant subsidiary" pursuant to the provisions of Regulation
S-X, Article 3-9, are included as Exhibit 99.

(3) Exhibits:

Exhibits identified in parentheses below, on file with the
Securities and Exchange Commission ("SEC"), are incorporated herein
by reference as exhibits hereto.

Exhibit Number:

(3)a Restated Certificate of Incorporation of the registrant filed
January 10, 1989, Certificate of Correction of the registrant
filed June 8, 1989, Certificate of Change of the registrant
filed March 18, 1992, Certificate of Amendment of the
registrant filed June 1, 1992, Certificate of Amendment of the
registrant filed April 20, 1994, Certificate of Amendment
filed June 8, 1998 and Certificate of Amendment filed March 9,
1999 (Exhibit (3)a to Form 10-K for 1998, File No. 1-1105).

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

*Incorporated herein by reference to the appropriate portions of the Company's
annual report to shareholders for the year ended December 31, 1999. (See Part
II.)



(3)b By-Laws of the registrant, as amended March 17, 1999 (Exhibit
(3)b to Form 10-K for 1998, File No. 1-1105).

(4) No instrument which defines the rights of holders of long term
debt, of the registrant and all of its consolidated
subsidiaries, is filed herewith pursuant to Regulation S-K,
Item 601(b)(4)(iii)(A). Pursuant to this regulation, the
registrant hereby agrees to furnish a copy of any such
instrument to the SEC upon request.

(10)(i)1 Form of Separation and Distribution Agreement by and among
AT&T Corp., Lucent Technologies Inc. and NCR Corporation,
dated as of February 1, 1996 and amended and restated as of
March 29, 1996 (Exhibit (10)(i)1 to Form 10-K for 1996, File
No. 1-1105).

(10)(i)2 Form of Distribution Agreement, dated as of November 20, 1996,
by and between AT&T Corp. and NCR Corporation (Exhibit
(10)(i)2 to Form 10-K for 1996, File No. 1-1105).

(10)(i)3 Tax Sharing Agreement by and among AT&T Corp., Lucent
Technologies Inc. and NCR Corporation, dated as of February 1,
1996 and amended and restated as of March 29, 1996 (Exhibit
(10)(i)3 to Form 10-K for 1996, File No. 1-1105).

(10)(i)4 Employee Benefits Agreement by and between AT&T Corp. and
Lucent Technologies Inc., dated as of February 1, 1996 and
amended and restated as of March 29, 1996 (Exhibit (10)(i)4 to
Form 10-K for 1996, File No. 1-1105).

(10)(i)5 Form of Employee Benefits Agreement, dated as of November 20,
1996, between AT&T Corp. and NCR Corporation (Exhibit (10)(i)5
to Form 10-K for 1996, File No. 1-1105).

(10)(ii)(B)1 General Purchase Agreement between AT&T Corp. and Lucent
Technologies Inc., dated February 1, 1996 and amended and
restated as of March 29, 1996 (Exhibit (10)(ii)(B)1 to Form
10-K for 1996, File No. 1-1105).

(10)(ii)(B)2 Form of Volume Purchase Agreement, dated as of November 20,
1996, by and between AT&T Corp. and NCR Corporation (Exhibit
(10)(ii)(B)2 to Form 10-K for 1996, File No. 1-1105).

(10)(iii)(A)1 AT&T Short Term Incentive Plan as amended March, 1994 (Exhibit
(10)(iii)(A)1 to Form 10-K for 1994, File No. 1-1105).

(10)(iii)(A)2 AT&T 1987 Long Term Incentive Program as amended December 17,
1997 (Exhibit 10)(iii)(A)2 to Form 10-K for 1997, File No.
1-1105).

(10)(iii)(A)3 AT&T Senior Management Individual Life Insurance Program as
amended March 3, 1998 (Exhibit (10)(iii)(A)3 to Form 10-K for
1997, File No. 1-1105).

(10)(iii)(A)4 AT&T Senior Management Long Term Disability and Survivor
Protection Plan, as amended and restated effective January 1,
1995 (Exhibit (10)(iii)(A)4 to Form 10-K for 1996, File No.
1-1105).



(10)(iii)(A)5 AT&T Senior Management Financial Counseling Program dated
December 29, 1994 (Exhibit (10)(iii)(A)5 to Form 10-K for
1994, File No. 1-1105).

(10)(iii)(A)6 AT&T Deferred Compensation Plan for Non-Employee Directors, as
amended December 15, 1993 (Exhibit (10) (iii)(A)6 to Form 10-K
for 1993, File No. 1-1105).

(10)(iii)(A)7 The AT&T Directors Individual Life Insurance Program as
amended March 2, 1998 (Exhibit (10)(iii)(A)1 to Form 10-K for
1997, File No. 1-1105).

(10)(iii)(A)8 AT&T Plan for Non-Employee Directors' Travel Accident
Insurance (Exhibit (10)(iii)(A)8 to Form 10-K for 1990, File
No. 1-1105).

(10)(iii)(A)9 AT&T Excess Benefit and Compensation Plan, as amended and
restated effective October 1, 1996 (Exhibit (10)(iii)(A)9 to
Form 10-K for 1996, File No. 1-1105).

(10)(iii)(A)10 AT&T Non-Qualified Pension Plan, as amended and restated
January 1, 1995 (Exhibit (10)(iii)(A)10 to Form 10-K for 1996,
File No. 1-1105).

(10)(iii)(A)11 AT&T Senior Management Incentive Award Deferral Plan, as
amended January 21, 1998 (Exhibit (10)(iii)(A)11 to Form 10-K
for 1998, File No. 1-1105).

(10)(iii)(A)12 AT&T Mid-Career Hire Program revised effective January 1, 1988
(Exhibit (10)(iii)(A)4 to Form SE, dated March 25, 1988, File
No. 1-1105) including AT&T Mid-Career Pension Plan, as amended
and restated July 1, 1999.

(10)(iii)(A)13 AT&T 1997 Long Term Incentive Program as amended through March
14, 2000

(10)(iii)(A)14 Form of Indemnification Contract for Officers and Directors
(Exhibit (10)(iii)(A)6 to Form SE, dated March 25, 1987, File
No.1-1105).

(10)(iii)(A)15 Pension Plan for AT&T Non-Employee Directors revised February
20, 1989 (Exhibit 10)(iii)(A)15 to Form 10-K for 1993, File
No. 1-1105).

(10)(iii)(A)16 AT&T Corp. Senior Management Basic Life Insurance Program, as
amended February 27, 1998 (Exhibit (10)(iii)(A)16 to Form 10-K
for 1997, File No. 1-1105).

(10)(iii)(A)17 Form of AT&T Benefits Protection Trust Agreement as amended
and restated as of November 1993, including the first
amendment thereto dated December 23, 1997.

(10)(iii)(A)18 AT&T Senior Officer Severance Plan effective October 9, 1997,
as amended October 30, 1997 (Exhibit (10)(iii)(A)18 to Form
10-K for 1997, File No. 1-1105).

(10)(iii)(A)19 Form of Pension Agreement between AT&T Corp. and Frank Ianna
dated October 30, 1997 (Exhibit (10)(iii)(A)19 to Form 10-K
for 1997, File No. 1-1105).



(10)(iii)(A)20 Form of Pension Agreement between AT&T Corp. and John C.
Petrillo dated October 30, 1997 (Exhibit (10)(iii)(A)21 to
Form 10-K for 1997, File No. 1-1105).

(10)(iii)(A)21 Form of Pension Agreement between AT&T Corp. and John Zeglis
dated May 7, 1997 (Exhibit (10)(iii)(A)22 to Form 10-K for
1997, File No. 1-1105).

(10)(iii)(A)22 Form of Employment Agreement between AT&T Corp. and C. Michael
Armstrong dated October 17, 1997 (Exhibit (10)(iii)(A)23 to
Form 10-K for 1997, File No. 1-1105).

(10)(iii)(A)23 Form of Employment Agreement between AT&T Corp. and Daniel E.
Somers dated April, 1997 (Exhibit (10)(iii)(A)23 to Form 10-K
for 1998, File No. 1-1105).

(10)(iii)(A)24 Liberty Media 401(K) Savings Plan (Incorporation herein by
reference to Exhibit 99.1 to Post-Effective Amendment No. 2 on
Form S-8 to the Registration Statement on Form S-4 of AT&T
Corp. (Commission File No. 333-70279) filed March 10, 1999).

(12) Computation of Ratio of Earnings to Fixed Charges.

(13) Specified portions (pages 12 through 55 and the inside back
cover) of the Company's Annual Report to Shareholders for the
year ended December 31, 1999.

(21) List of subsidiaries of AT&T.

(23)a Consent of PricewaterhouseCoopers, LLP

(23)b Consent of KPMG, LLP

(24) Powers of Attorney executed by officers and directors who
signed this report.

(27) Financial Data Schedules.

(99) Supplemental Information regarding Liberty Media Group.

AT&T will furnish, without charge, to a shareholder upon request a copy
of the annual report to shareholders and the proxy statement, portions of which
are incorporated herein by reference thereto. AT&T will furnish any other
exhibit at cost.

(b) Reports on Form 8-K:

During the fourth quarter 1999, Form 8-K dated October 29, 1999 was
filed pursuant to Item 5 (Other Events), Form 8-K dated November 16, 1999 was
filed pursuant to Item 5 (Other Events) and Form 8-K dated December 6, 1999 was
filed pursuant to Item 5 (Other Events).



REPORT OF INDEPENDENT ACCOUNTANTS

To the Board of Directors and Shareowners of AT&T Corp.:

Our audits of the consolidated financial statements referred to in our report
dated March 9, 2000 appearing in the 1999 Annual Report to Shareholders of AT&T
Corp. (which report and consolidated financial statements are incorporated by
reference in this Annual Report on Form 10-K) also included an audit of the
financial statement schedule listed in Item 14(a)(2) of this Form 10-K. In our
opinion, this financial statement schedule presents fairly, in all material
respects, the information set forth therein when read in conjunction with the
related consolidated financial statements.



PricewaterhouseCoopers LLP

New York, New York

March 9, 2000



Schedule II--Sheet 1

AT&T CORP.
AND ITS CONSOLIDATED SUBSIDIARIES

SCHEDULE II--VALUATION AND QUALIFYING ACCOUNTS

(Millions of Dollars)

- ------------------------------------------------------------------------------
COL. A COL. B COL. C COL. D COL. E
- ------------------------------------------------------------------------------
Charged to
Balance at Costs and Balance
Beginning Expenses at End
Description of Period and Other Deductions(a) of Period
- ------------------------------------------------------------------------------
Year 1999

Allowances for doubtful
accounts (b) $1,106 $1,416 $ 962 $1,560

Deferred tax asset valuation
allowance (c) $ 278 $ 124 $ 171 $ 231

Year 1998

Allowances for doubtful
accounts (b) $1,037 $1,389 $1,320 $1,106

Deferred tax asset valuation
allowance (c) $ 361 $ 23 $ 106 $ 278

The Notes on Sheet 2 are an integral part of this Schedule.



Schedule II--Sheet 2

AT&T CORP.
AND ITS CONSOLIDATED SUBSIDIARIES

SCHEDULE II--VALUATION AND QUALIFYING ACCOUNTS

(Millions of Dollars)

- ------------------------------------------------------------------------------
COL. A COL. B COL. C COL. D COL. E
- ------------------------------------------------------------------------------
Charged to
Balance at Costs and Balance
Beginning Expenses at End
Description of Period and Other Deductions(a) of Period
- ------------------------------------------------------------------------------
Year 1997

Allowances for doubtful
accounts (b) $1,000 $1,522 $1,485 $1,037

Deferred tax asset valuation
allowance (c) $ 220 $ 142 $ 1 $ 361

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

(a) Amounts written off as uncollectible, net of recoveries and
reclassifications.
(b) Includes allowances for doubtful accounts on long-term receivables of
$53, $46 and $49 at December 31, 1999, 1998 and 1997, respectively
(included in other assets in the Consolidated Balance Sheets).
(c) End of period balances at December 31, 1998 and 1997, include $18 and
$14, respectively, which represent the current portion of the deferred
tax valuation allowance. There was no current portion at December 31,
1999. The increase in the deferred tax asset valuation allowance in 1999
is due to the acquisition of Tele-Communications, Inc.



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.


AT&T Corp.



/s/ M. J. Wasser
------------------------------
By: M. J. Wasser
Vice President - Law
and Secretary


March 27, 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 date indicated.

Principal Executive Officers: #
#
C. Michael Armstrong Chairman of the Board #
and Chief Executive #
Officer #
#
John Zeglis President and Director #
#
Principal Financial Officer: #
#
Charles H. Noski Senior Executive Vice #
President and Chief #
Financial Officer #
#
Principal Accounting Officer: #
#
Nicholas S. Cyprus Vice President and #
Controller ## By M. J. Wasser
# (attorney-in-fact)*
Directors: #
# March 27, 2000
Kenneth T. Derr #
M. Kathryn Eickhoff #
Walter Y. Elisha #
George M. C. Fisher #
Donald V. Fites #
Amos B. Hostetter, Jr. #
Ralph S. Larsen #
John C. Malone #
Donald F. McHenry #
Michael I. Sovern #
Sanford I. Weill #
Thomas H. Wyman #