AT&T Chosen to Supply Network Solution for Marmon/Keystone Corp.

100-Year-Old Tubular and Bar Supplier to Increase Efficiency and Flexibility With AT&T Services

Bolingbrook, Illinois, September 11, 2007

AT&T Inc. (NYSE:T) today announced a two-year network services contract with Marmon/Keystone Corp., a Butler, Pa.-based tubular and bar supplier with offices in the United States, Canada and Mexico. Marmon/Keystone, which was established in 1907 and is a member of The Marmon Group, supplies more than 15,000 sizes and grades of tubular and bar products.

Under terms of the agreement, AT&T will provide its Private Network Transport (PNT) services to 35 Marmon/Keystone U.S. locations. This network solution is deployed over AT&T's Multiprotocol Label Switching (MPLS) infrastructure and will allow Marmon/Keystone to improve its productivity through data-traffic prioritization and increased network reliability. The MPLS platform also enables seamless high speed connectivity from multiple locations with optimized network efficiency.

The company's AT&T-managed PNT services will provide a flexible foundation to accommodate future enterprise expansion for Marmon/Keystone and will allow the company to deploy Voice over Internet Protocol (VoIP) technology in the future.

"The new network from AT&T's network solutions will enable us to provide the same reliable and efficient service to our customers while increasing performance for our next century of service." said Alavi Aboosally, director, M.I.S. "With increased productivity and reliable connectivity, AT&T's MPLS-based services adds further flexibility and value to our growing business operations."

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About Marmon Keystone
Marmon/Keystone Corporation, a leading wholesale distributor of tubular products, marks its 100th anniversary this year. The company inventories over 15,000 sizes and grades of carbon, alloy, stainless steel and aluminum tubular and bar products. Service centers and sales offices are located throughout North America with corporate headquarters in Butler, Pennsylvania. Marmon/Keystone and affiliated companies are members of The Marmon Group, an international association of more than 125 business units that operate independently within diverse business sectors. Member companies have collective revenues of $7 billion. More information about Marmon/Keystone is available at

About AT&T
AT&T Inc. (NYSE:T) 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. 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. As part of its three-screen integration strategy, AT&T is expanding its TV entertainment offerings. Additional information about AT&T Inc. and the products and services provided by AT&T subsidiaries and affiliates is available at

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