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  2. Plain old telephone service - Wikipedia

    en.wikipedia.org/wiki/Plain_old_telephone_service

    Plain Old Telephone Service (POTS), or Plain Ordinary Telephone System, [1] is a retronym for voice-grade telephone service employing analog signal transmission over copper loops. Originally POTS stood for Post Office Telephone Service as early phone lines in most parts of the world were operated directly by the local Post Office. (For instance ...

  3. Landline - Wikipedia

    en.wikipedia.org/wiki/Landline

    A landline ( land line, land-line, main line, fixed-line, and wireline) is a telephone connection that uses metal wires from the owner's premises also referred to as: POTS, Twisted pair, telephone line or public switched telephone network (PSTN). Landline services are traditionally provided via an analogue copper wire to a telephone exchange.

  4. History of the telephone in the United States - Wikipedia

    en.wikipedia.org/wiki/History_of_the_telephone...

    The telephone played a major communications role in American history from the 1876 publication of its first patent by Alexander Graham Bell onward. In the 20th century the American Telephone and Telegraph Company (AT&T) dominated the telecommunication market as the at times largest company in the world, until it was broken up and replaced by a system of competitors.

  5. History of the telephone - Wikipedia

    en.wikipedia.org/wiki/History_of_the_telephone

    Internet Protocol (IP) telephony, also known as Internet telephony or Voice over Internet Protocol (VoIP), is a disruptive technology that is rapidly gaining ground against traditional telephone network technologies. Apple iPhone smartphone. IP telephony uses a broadband Internet service to transmit conversations as data packets.

  6. Telephone - Wikipedia

    en.wikipedia.org/wiki/Telephone

    An old rotary dial telephone. AT&T push button telephone made by Western Electric, model 2500 DMG black, 1980. A telephone, colloquially referred to as a phone, is a telecommunications device that permits two or more users to conduct a conversation when they are too far apart to be easily heard directly. A telephone converts sound, typically ...

  7. T-carrier - Wikipedia

    en.wikipedia.org/wiki/T-carrier

    The T-carrier is a member of the series of carrier systems developed by AT&T Bell Laboratories for digital transmission of multiplexed telephone calls. The first version, the Transmission System 1 (T1), was introduced in 1962 in the Bell System, and could transmit up to 24 telephone calls simultaneously over a single transmission line of copper ...

  8. First transcontinental telephone call - Wikipedia

    en.wikipedia.org/wiki/First_transcontinental...

    A telephone call, which for marketing purposes is claimed to be the first transcontinental telephone call, occurred on January 25, 1915, a day timed to coincide with the Panama–Pacific International Exposition celebrations. However, the transcontinental telephone line was first completed on June 17, 1914, and successfully first voice tested ...

  9. Telephone line - Wikipedia

    en.wikipedia.org/wiki/Telephone_line

    A telephone line or telephone circuit (or just line or circuit industrywide) is a single-user circuit on a telephone communication system. [ 1] It is designed to reproduce speech of a quality that is understandable. [ 2] It is the physical wire or other signaling medium connecting the user's telephone apparatus to the telecommunications network ...

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