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AT&T CallVantage was a voice over Internet Protocol telephone service first offered in 2004 by AT&T Corp., upon the heels of its announcement that it would stop seeking traditional local and long-distance landline customers.
Before using microwave relay and coaxial cables, AT&T used open wire lines for long-distance service. In 1911, the system connected New York to Denver. [1] The introduction of repeater towers allowed such connections to reach across North America.
For most of the 20th century, AT&T subsidiary AT&T Long Lines thus enjoyed a near-total monopoly on long-distance telephone service in the United States. AT&T also controlled 22 Bell Operating Companies which provided local telephone service to most of the United States.
SBC Long Distance LLC [1] [2] is a long-distance telephone company owned by AT&T that does business as AT&T Long Distance. SBC Long Distance competes with other long-distance providers who provide service within some of the Bell Operating Company service boundaries of AT&T .
In AT&T's third-quarter earnings report, the company announced it will invest $14 billion in wireless and wireline IP broadband networks, where, including managed IT services, the company expects ...
(Official industry term: plain old telephone service.) Earlier this year, California regulators rejected a bid by AT&T to pull back from copper-wire landline service in the state. The carrier ...
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