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Brightspeed of Texas was founded in 1956 as Central Telephone of Texas, [1] a subsidiary of Centel. In 1992, Centel was acquired by Sprint, and Central of Texas began doing business under the Sprint name, but retained its legal name. In 2006, the company was spun off into Embarq when Sprint Nextel spun off its local telephone operations. [2]
In the following states and regions, the primary local carrier is not an RBOC: Lumen Technologies, in addition to its role as the BOC in the areas of 14 states gained from its acquisition of Qwest, Lumen serves other non-ex-Bell local exchanges in those states, as well as some in Florida and the Las Vegas metropolitan area in Nevada.
This 1911 advertisement from Seattle shows phone numbers from two different phone companies; the exchanges were not interconnected. An independent telephone company was a telephone company providing local service in the United States or Canada that was not part of the Bell System organized by American Telephone and Telegraph. Independent ...
TDS Telecom is an American telecommunications company with headquarters in Madison, Wisconsin.It is a wholly owned subsidiary of Telephone and Data Systems Inc, and is the seventh-largest local exchange carrier in the U.S. [1] TDS Telecom offers telephone, broadband Internet and television services to customers in 30 states and more than 900 rural and suburban communities, though it also ...
PSTN network topology is the switching network topology of a telephone network connected to the public switched telephone network (PSTN).. In the United States and Canada, the Bell System network topology was the switching system hierarchy implemented and operated from c. 1930 to the 1980s for the purpose of integrating the diverse array of local telephone companies and telephone numbering ...
An interexchange carrier handles traffic between telephone exchanges. Telephone exchanges are identified in the United States by the three-digit area code (NPA) and the central office prefix, which is the first three digits of the local telephone number (NPA-NXX). Different exchanges, or central offices, generally serve different geographic areas.
Armstrong Telephone Company is a telecommunications provider, and part of the Armstrong Group of Companies. The company primarily operates as a local exchange carrier in rural markets in West Virginia , Maryland , Pennsylvania , New York and Ohio .
The New England Telephone and Telegraph Engineering Office is a historic commercial building at 47 Pleasant Street in Brockton, Massachusetts.Built in 1923, this Classical Revival building house support services for the main exchange of the local telephone company until about 1950, and has seen other commercial uses since then.