Formed in 1983 as Southwestern Bell Corporation, the companny AT&T Inc., is the largest provider of both local and long distance telephone services in the United States, and also serves digital subscriber line Internet access. It is claimed that the company has over 77 million wireless customers,... 

The name Bell System accredited from the telephone inventor Alexander Graham Bell, was a trademark and used by the American Telephone & Telegraph Company (AT&T). It is a United States telecommunication company and its affiliated companies to co-brand their extensive circuit-switched telephone...