AT&T Establishes New Network Services for Leading Medical Liability Insurer

AT&T Advances Virtual Private Network Services for ProAssurance and Handles Hardware Installation at Birmingham Headquarters

Birmingham, Alabama, September 20, 2007

AT&T Inc. (NYSE:T) has announced a two-year contract with ProAssurance Group for more than $1 million in network services. In addition to establishing Virtual Private Network (VPN) services for ProAssurance in order to enhance communications between 14 company sites across the country, AT&T will install required hardware for the network at ProAssurance's headquarters in Birmingham. ProAssurance is also leveraging AT&T's Integration Solutions services to help manage and develop its network capabilities over the new VPN.

ProAssurance subsidiaries form the backbone of one of the nation's largest providers of medical liability insurance and operate in 27 states and the District of Columbia. ProAssurance requires reliable, secure and efficient network communication to manage its policyholders' accounts. Improved visibility and enhanced reporting systems will enable ProAssurance to streamline its operations and remain focused on protecting customers from medical liability damages.

"AT&T gives ProAssurance the network services to enhance the way that our professionals are able to communicate across the country and further streamline and improve how we report on the progress of our business," said Willie Clemons, vice president, Information Systems, ProAssurance. "AT&T's presence every step along the way, from installation to network integration to maintenance and management, is something we've come to depend on."

With this contract, ProAssurance is building on an established relationship with AT&T that includes AT&T Business Network (ABN) service and the introduction of Multiprotocol Label Switching (MPLS) capabilities.

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About ProAssurance
ProAssurance Corporation is the nation's fourth largest writer of medical professional liability insurance through its principal subsidiaries The Medical Assurance Company, Inc., ProNational Insurance Company, NCRIC, Inc., Physicians Insurance Company of Wisconsin, Inc., and Red Mountain Casualty Insurance Company, Inc. ProAssurance is one of the 100 largest property-casualty insurance groups in the nation, based on Net Written Premium. ProAssurance was recently recognized as a member of the Ward's 50 for 2007, indicative of long-term superior financial performance and outstanding insurance security.

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 www.att.com.

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