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  2. AT&T Merlin - Wikipedia

    en.wikipedia.org/wiki/AT&T_Merlin

    AT&T Merlin is a corporate telephone system by American Telephone and Telegraph (AT&T) that was introduced in late 1983, when it was branded American Bell Merlin. After the breakup of AT&T in 1984, it was rebranded and later also supplied by Lucent and Avaya . The system was designed at the beginning of the 1980s prior to the Bell System ...

  3. Danger Hiptop - Wikipedia

    en.wikipedia.org/wiki/Danger_Hiptop

    Danger Hiptop. The Danger Hiptop, also re-branded as the T-Mobile Sidekick, Mobiflip and Sharp Jump, is a GPRS / EDGE / UMTS smartphone that was produced by Danger, Inc. from 2002 to 2010. [2] [3] The Hiptop software was designed by Danger, Inc., which was located in Palo Alto, California, and purchased by Microsoft for $500 million in 2008. [4]

  4. Bell System - Wikipedia

    en.wikipedia.org/wiki/Bell_System

    Bell System. The Bell System was a system of telecommunication companies, led by the Bell Telephone Company and later by the American Telephone and Telegraph Company (AT&T), that dominated the telephone services industry in North America for over 100 years from its creation in 1877 until its antitrust breakup in 1983.

  5. Mobile VoIP - Wikipedia

    en.wikipedia.org/wiki/Mobile_VoIP

    Mobile VoIP or simply mVoIP is an extension of mobility to a voice over IP network. Two types of communication are generally supported: cordless telephones using DECT or PCS protocols for short range or campus communications where all base stations are linked into the same LAN, and wider area communications using 3G or 4G protocols.

  6. T-carrier - Wikipedia

    en.wikipedia.org/wiki/T-carrier

    Transmission System 1. The T-carrier is a hardware specification for carrying multiple time-division multiplexed (TDM) telecommunications channels over a single four-wire transmission circuit. It was developed by AT&T at Bell Laboratories ca. 1957 and first employed by 1962 for long-haul pulse-code modulation (PCM) digital voice transmission ...

  7. Model 500 telephone - Wikipedia

    en.wikipedia.org/wiki/Model_500_telephone

    Model 500 telephone. The Western Electric model 500 telephone series was the standard domestic desk telephone set issued by the Bell System in North America from 1950 through the 1984 Bell System divestiture. The successor to the model 302 telephone, the model 500's modular construction compared to previous types simplified manufacture and ...

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