AT&T Inc. Announces New Five-Year Contract with Evanston Northwestern Healthcare

Illinois Health Care Provider Upgrades Voice and Data Network

Evanston, Illinois, August 18, 2006

AT&T Inc. (NYSE: T) today announced a new optical services contract with Evanston Northwestern Healthcare (ENH), an academic health system comprising three hospitals and 65 medical offices and facilities. Evanston Northwestern Healthcare is located in Chicago's northern suburbs.

Under the terms of the five-year contract, AT&T will deliver a Synchronous Optical Network (SONET) ring, which is an optical-fiber network backbone; and GigaMAN® service, which is a dedicated fiber-optic Ethernet service. Together, these services will enable ENH to open a new data center, thereby converting the existing facility into a backup data location for added security and increased redundancy of the ENH network. This solution will protect ENH against possible service outages, which would be detrimental to this virtually paperless institution.

The expanded bandwidth and increased reliability, via the converged network infrastructure, will ensure constant access to the network's critical applications and directory of patient records. Additionally, the optical network will enable ENH to continue to provide highly available voice and data connectivity to hospitals and medical offices.

"We are virtually a paperless healthcare institution, so constant access to our voice and data communications is essential to our operations," said Tom Smith, CIO of Evanston Northwestern Healthcare. "The solution provided by AT&T safeguards against detrimental service outages by delivering increased uptime for our network and core applications, enabling our staff to focus on our number one priority — delivery of excellent patient care."

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About Evanston Northwestern Healthcare
Located in Chicago's northern suburbs, Evanston Northwestern Healthcare (ENH) is an integrated healthcare system that includes Evanston, Glenbrook and Highland Park Hospitals, ENH Medical Group (comprising 65 medical offices and facilities), ENH Home Services, ENH Research Institute and ENH Foundation. Through its affiliation with Northwestern University's Feinberg School of Medicine, ENH supports extensive medical education and research. ENH is in the top nine percent of all institutions that receive funding from the National Institutes of Health; among multi-specialty independent research hospitals, it ranks 12th in the nation. ENH is the only healthcare system in the United States that has been named a top 100 hospital 11 times by Solucient. For more information on Evanston Northwestern Healthcare, visit www.enh.org.

About AT&T
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 57.3 million wireless customers. Additional information about AT&T Inc. and AT&T products and services is available at www.att.com.

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