AT&T Announces New Contract with Diamond Companies

Industrial Truck Sales and Service Company Chooses AT&T to Improve Dealership Services

Memphis, Tennessee, March 29, 2007

AT&T Inc. (NYSE: T) today announced a new contract to upgrade the data network for Diamond Companies, Inc., a transportation services company that provides new and used truck sales, lease, rental, parts, mechanical service, contract maintenance and body shop repairs. Diamond Companies operates 15 dealerships, serving 11 cities in Arkansas, Kansas, Missouri, and Tennessee.

Under the terms of the contract, AT&T will be the primary service provider for Diamond Companies, providing Managed Internet Service (MIS), a dedicated Internet connection that supports constant and secure real-time access to the Internet across the network. AT&T MIS will give Diamond Companies the flexibility to expand network bandwidth when additional capacity is needed, while incorporating convenience, resources and flexibility in a completely vendor-provided Internet solution.

"We needed a fully meshed network with the redundancy and reliability to protect file transfers while also providing us with opportunities to do more for our customers," said Andy Cain, IT supervisor for Diamond Companies. "The networking solution and management provided by AT&T will enhance our IT operations and maximize our customer service capabilities."

AT&T's MIS solution for Diamond Companies will help improve all data communications between locations on the company's existing network platform. By managing the routers and providing other MIS services, AT&T will ensure fast, flexible and secure access to all of Diamond Companies' locations. This enhanced service will improve the company's ability to respond to customer needs, whether it is shipping parts or checking availability of vehicles across all dealerships.

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About Diamond Companies Inc.
Diamond Companies, Inc. provides new and used truck sales, lease and rental trucks, parts, contract maintenance, mechanical service and body shop repairs. Established in 1999, the company's 15 dealerships serve 11 cities in Arkansas, Kansas, Missouri, and Tennessee. For more information, visit www.adiamondcompany.com.

About AT&T
AT&T Inc. is a premier communications holding company. Its subsidiaries and affiliates, AT&T operating companies, are the providers of AT&T services in the United States and around the world. Among their offerings are the world's most advanced IP-based business communications services and the nation's leading wireless, high speed Internet access, and voice services. As part of its three-screen integration strategy, AT&T is expanding video entertainment offerings to include next-generation television services such as AT&T U-verseSM TV. In domestic markets, AT&T is known for the directory publishing and advertising sales leadership of its Yellow Pages and YELLOWPAGES.COM organizations, and the AT&T brand is licensed to innovators in such fields as communications equipment. Additional information about AT&T Inc. and the products and services provided by AT&T subsidiaries and affiliates is available at www.att.com.

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