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AT&TAT&T, standing for American Telephone and Telegraph, is one of the oldest telephone communications corporations still in existence. Based in San Antonio Texas, AT&T today is the largest provider of phone services in the United States, dominating not only local and long distance LAN lines but also the wireless market as well. AT&T has its roots in the original company founded by Alexander Graham Bell and his financers, Bell Telephone Company. In 1880, the Bell Telephone Company began an ambitious effort to lay long distance lines across the country in a network that was the first of its kind. In 1885 this project was incorporated into its own company, the American Telephone and Telegraph company, or known simply as AT&T. By 1892, AT&T had connected Chicago with New York, and had an extensive network linking New York with San Francisco by 1915. The first transatlantic cables were in place by 1956.
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