AT&T Broadband Greater Chicago Market Successfully Migrates Customers to ATTBI; Customers regain High-Speed Connection and WorldNet Content.

Business Editors/High-Tech Writers

CHICAGO--(BUSINESS WIRE)--Dec. 4, 2001

AT&T Broadband Greater Chicago Market has successfully migrated customers to its new AT&T Broadband Internet (ATTBI) service. The migrations, which began this morning, mean that virtually all of AT&T's customers, formerly served by @Home, now can connect to the new ATTBI service by logging on to their computers and pulling down the new configuration. AT&T will continually monitor the system to make sure that all customers have access to the new network.

This follows on the heels of the successful national migration of about 500,000 cable Internet customers to AT&T's new high speed Internet network as of Tuesday morning, Dec. 4, less than 60 hours after the At Home Corporation shut off service for more than 850,000 AT&T customers.

"Our Chicago team has done an exceptional job in bringing on line the new AT&T network," said Patricia Andrews-Keenan, vice president of communications. "Comments coming in (via e-mail) from our customers give solid support for the swiftness with which we brought the new network on line."

While the network is active, customers still need to log on and configure the service for the new ATTBI service and WorldNet content. Customers will receive a broadcast phone call (phone message if they have an answering machine) advising them that the service is being migrated. The phone message will instruct them to initiate the log-on to the new network.

AT&T Broadband has communicated with all of its high-speed cable Internet customers during the past few weeks to help them prepare for these developments.

The company will automatically issue credits to any customers who experience an interruption of service. Credits will be issued at the rate of two days credit for every day of service interruption.

All affected customers will see these changes as part of their new service:

- Email domain names will automatically change from (username)@home.com to
(username)@attbi.com. User names will stay the same;

- AT&T Broadband Internet will feature AT&T WorldNet High Speed service
content;

- Upstream and downstream speeds will be managed to provide a more consistent
broadband service and optimize the Internet experience for all of our
customers.

AT&T Broadband cable and local telephone service aren't being affected by these developments.

"Having our own network is significant in that AT&T will have control over both the quality and consistency of the new network, a direct benefit to our customers," continued Andrews-Keenan. "Additionally, our partnership with WorldNet means our customers have access to an award winning content provider at the exceptional speed offered with cable modems."

About AT&T Broadband

AT&T Broadband, a business unit of AT&T, is the nation's largest broadband services company, providing television entertainment services to about 14 million customers across the nation. The company also provides advanced services, such as digital cable, high-speed cable Internet services and competitive local phone service. More information on AT&T Broadband services can be found at www.attbroadband.com. AT&T (NYSE:T) is the world's leader in telecommunications services and technology.

This press release contains "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995. These include, but are not limited to, statements regarding the Company's plans, intentions and expectations. Such statements are inherently subject to a variety of risks and uncertainties that could cause actual results to differ materially from those projected. These risks include increased levels of competition, shortages of cellular handsets and other key equipment, restrictions on the Company's ability to finance its growth and other factors. A more extensive discussion of the risk factors that could impact these areas and the Company's overall business and financial performance can be found in the Company's reports filed with the Securities and Exchange Commission. Given these concerns, investors and analysts should not place undue reliance on forward-looking statements.