AT&T Government Solutions Wins $8.2 Million in Private Line Circuit Orders from Department of Defense

Vienna, Virginia, March 28, 2006, AT&T Government Solutions has been awarded orders totaling $8.2 million to provide 36 secure, high-capacity circuits to the Defense Information Systems Agency (DISA), which oversees the Department of Defense’s networking needs.

The circuits were awarded under a contract called DISN Transmission Services — CONUS (Continental U.S.) Extension (DTS-CE).

The company will supply private line, point-to-point circuits that comprise the backbone of the Defense Information Systems Network (DISN), which provides critical network services to U.S. war fighters. The domestic circuits will carry both voice and data traffic and will be used for both command and control and administrative purposes.

“This award demonstrates our ability to supply secure, reliable circuits at competitive rates,” said Don Herring, president of AT&T Government Solutions.

AT&T Government Solutions, headquartered in Vienna, Va., is a long-standing, trusted source of information technology solutions for the federal government, integrating unmatched network resources and professional services expertise with innovative technologies from AT&T Labs and industry-leading partners. Best known for network leadership in voice, data, video and managed services, AT&T Government Solutions is a proven solutions integrator, with professional services expertise in areas such as business transformation, knowledge management, training, program management, systems engineering and security.

AT&T Inc. is one of the world’s largest telecommunications holding companies and is the largest in the United States. Operating globally under the AT&T brand, AT&T companies are recognized as the leading worldwide providers of IP-based communications services to business and as leading U.S. providers of high-speed DSL Internet, local and long distance voice, and directory publishing and advertising services. AT&T Inc. holds a 60 percent ownership interest in Cingular Wireless, which is the No. 1 U.S. wireless services provider with more than 54 million wireless customers. Additional information about AT&T Inc. and AT&T products and services is available at www.TheNewATT.com.

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Patricia Stortz

AT&T Inc.

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