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Learn about the origins, monopoly, and breakup of AT&T, the American Telephone and Telegraph Company. AT&T was the primary telephone company in the US from 1885 to 1982, when it was split into regional and long-distance providers.
An automatic number announcement circuit (ANAC) is a component of a central office of a telephone company that provides a service to installation and service technicians to determine the telephone number of a telephone line. The facility has a telephone number that may be called to listen to an automatic announcement that includes the caller's ...
Learn how the telephone evolved from a local service to a global network in the U.S. from 1876 to 2023. Explore the role of AT&T, Bell System, and other companies in the development and regulation of the telecommunication industry.
AT&T is an American multinational telecommunications company that traces its origins to the Bell Telephone Company founded by Alexander Graham Bell. It has undergone several mergers, acquisitions, and divestitures, and is now the world's third-largest telecom company by revenue and the second-largest wireless carrier in the U.S.
6-1-1 is an abbreviated dialing telephone number for reporting troubles with telephone service or payphone. It is an N11 code, not officially assigned by the FCC or CRTC, but widely used in the United States and Canada.
The Merlin system was originally sold in two-line, six-telephone (206); four-line, 10-telephone (410); and eight-line, 20-telephone (820) configurations. Later, there was a further 10-line, 30-telephone configuration, and with the addition of an expansion key service unit (KSU) the system could accommodate up to 30 lines and 70 telephones ...
A local loop is the physical link that connects a customer to a telecommunications network. Learn about its history, infrastructure, and applications in telephony, internet, and wireless services.
AT&T Mobility is the second largest wireless carrier in the US, with 114.5 million subscribers as of March 2024. It was formerly known as Cingular Wireless, a joint venture of SBC and BellSouth, and later acquired by AT&T in 2006.
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