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AT&T Wireless and Cingular Sign Number Porting Agreements with Each Other and with Sprint PCS REDMOND, Wash., and Atlanta, Nov. 14 /PRNewswire-FirstCall/ -- AT&T Wireless and Cingular Wireless today announced that they have signed an agreement detailing how they will port customers' phone numbers between them once the first phase of local number portability takes effect on November 24, 2003. The carriers also announced that they each recently signed porting agreements with Sprint PCS. The agreements address operational details, such as the troubleshooting procedures and business rules the carriers will follow during the porting process. While the Federal Communications Commission does not require carriers to sign such agreements in order to port numbers, AT&T Wireless and Cingular agreed that formal porting agreements would allow them to cooperate as efficiently as possible during the LNP process, which is in the best interest of their customers. About AT&T Wireless AT&T Wireless (NYSE:AWE) is the second-largest wireless carrier, based on revenues, in the United States. With 21.855 million subscribers as of September 30, 2003, and revenues of more than $16.5 billion over the past four quarters, AT&T Wireless delivers advanced high-quality mobile wireless communications services, voice and data, to businesses and consumers, in the U.S. and internationally. For more information, please visit us at http://www.attwireless.com/. About Cingular Wireless Cingular Wireless, a joint venture between SBC Communications (NYSE:SBC) and BellSouth (NYSE:BLS), serves more than 23 million voice and data customers across the United States. A leader in mobile voice and data communications, Cingular is the only U.S. wireless carrier to offer Rollover(SM), the wireless plan that lets customers keep their unused monthly minutes. Cingular has launched the world's first commercial deployment of wireless services using Enhanced Data for Global Evolution (EDGE) technology. Cingular provides cellular/PCS service in 43 of the top 50 markets nationwide, and provides corporate e-mail and other advanced data services through its GPRS, EDGE and Mobitex packet data networks. Details of the company are available at http://www.cingular.com/. For Further Information: Cingular: Clay Owen AT&T Wireless: Rochelle Cohen 404-236-6153 (office) 908-696-4217 (office) 404-538-0124 (wireless) 973-615-8135 (wireless) DATASOURCE: AT&T Wireless CONTACT: AT&T Wireless: Rochelle Cohen, +1-908-696-4217 (office), or 973-615-8135 (wireless), ; or Cingular: Clay Owen, +1-404-236-6153 (office), or, +1-404-538-0124 (wireless), Web site: http://www.attwireless.com/ http://www.cingular.com/

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