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Design Line, also known as Deco-Tel, is a brand name that AT&T has used for several of its specialty telephone designs to fulfill the demand by customers for more variety in telephone models. Pre-divestiture models
The 500/554 rotary phones ended production as they were no longer needed. A new Design Line telephone was introduced and produced overseas as well, and many variations of single line telephone sets were manufactured over the years. AT&T Technologies kept the Shreveport Works open, and Princess & 2500/2554 business model production continued in ...
As CLASS was an AT&T trademark, the term vertical service code was adopted by the North American Numbering Plan Administration. The use of vertical is a somewhat dated reference to older switching methods and the fact that these services can only be accessed by a telephone subscriber, going up ( vertically ) inside the local central office ...
AT&T was founded as Bell Telephone Company by Alexander Graham Bell, Thomas Watson and Gardiner Greene Hubbard after Bell's patenting of the telephone in 1875. [21] By 1881, Bell Telephone Company had become the American Bell Telephone Company. [22] One of its subsidiaries was the American Telephone and Telegraph Company (AT&T), established in ...
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 ...
In addition to the support options listed above, paid members also have access to 24/7 phone support by calling 1-800-827-6364. Popular Products. Account; AOL Mail;
A ringback number is a telephone number for a telephone line that automatically calls the line that the call was placed from, after the caller has hung up. The typical use of this facility is by telephone company technicians for testing a new installation or for trouble-shooting. [1]
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related to: at&t design line telephone number