Cingular Wireless LLC

Cingular wireless is the largest wireless carrier in the United States, serving 58.7 million customers. Cingular is solely owned by AT&T Inc. (NYSE: T), a premier communications holding company in the united states and worldwide. Cingular has the largest digital voice and data network in the nation - the Allover Network - and the largest mobile-to-mobile community of any national wireless carrier. Cingular is a leader in third generation wireless technology, featuring the first widely available HSDPA (high speed downlink packet access) service in the world. Cingular is the only U.S. wireless carrier to offer Rollover, the wireless plan that lets customers keep their unused monthly minutes. ( www.cingular.com )