AT&T Government Solutions Selected as Subcontractor on $51 Million DVS II Contract

AT&T Will Help Northrop Grumman Build IP-Based Voice and Video Conferencing Network for DISA

Vienna, Virginia, February 14, 2006, AT&T Government Solutions has been selected to assist Northrop Grumman Mission Systems with a contract to build a modern, IP-based system to handle voice and video conferencing for the Defense Information Systems Agency (DISA). The value of the contract could reach $51 million.

DISA’s Defense Information Systems Network Video Services II (DVS II) will allow U.S. military commanders to quickly and easily set up secure, high-speed audio and video conference calls across continents.

AT&T is the incumbent on the current DISN Video Services - Global (DVS-G) contract, which provides video bridging services to all military communities. Originally procured to handle administrative communications, DVS-G has evolved into an effective command and control network comprising six video bridging hubs that provide secure, 24-hour-a-day communications to 4,000 sites worldwide.

“We’re pleased that we could use our knowledge of the existing network and our skill at delivering services over IP to help the Northrop team win DVS-II,” said Lou Addeo, president of AT&T Government Solutions. “We’re very familiar with the challenge of transitioning legacy operations to IP and we believe that experience will be invaluable to Northrop and DISA on this project.”

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.

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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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