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  2. Business telephone system - Wikipedia

    en.wikipedia.org/wiki/Business_telephone_system

    A business telephone system is a telephone system typically used in business environments, encompassing the range of technology from the key telephone system ( KTS) to the private branch exchange ( PBX ). A business telephone system differs from an installation of several telephones with multiple central office (CO) lines in that the CO lines ...

  3. Digital enhanced cordless telecommunications - Wikipedia

    en.wikipedia.org/wiki/Digital_enhanced_cordless...

    However, its most popular application is single-cell cordless phones connected to traditional analog telephone, primarily in home and small-office systems, though gateways with multi-cell DECT and/or DECT repeaters are also available in many private branch exchange (PBX) systems for medium and large businesses, produced by Panasonic, Mitel ...

  4. Telephone exchange - Wikipedia

    en.wikipedia.org/wiki/Telephone_exchange

    Telephone switches are a small component of a large network. A major part, in terms of expense, maintenance, and logistics of the telephone system is outside plant, which is the wiring outside the central office. While many subscribers were served with party-lines in the middle of the 20th century, it was the goal that each subscriber telephone ...

  5. Main distribution frame - Wikipedia

    en.wikipedia.org/wiki/Main_distribution_frame

    Main distribution frame. Small, single-sided MDF for a military base, 1940s. Modern main distribution frame. In telephony, a main distribution frame ( MDF or main frame) is a signal distribution frame for connecting equipment ( inside plant) to cables and subscriber carrier equipment ( outside plant ).

  6. Plain old telephone service - Wikipedia

    en.wikipedia.org/wiki/Plain_old_telephone_service

    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 ...

  7. Nortel Norstar - Wikipedia

    en.wikipedia.org/wiki/Nortel_Norstar

    Nortel Norstar. The Nortel Norstar, previously the Meridian Norstar, was a small and medium-sized business digital key telephone system introduced by Nortel (formerly Northern Telecom) and later sold to Avaya. It featured automatic call distribution, and supported up to 192 extensions. In the United Kingdom it was sold by British Telecom ...

  8. Panasonic KX-TG7740 and KX-TG7730 cordless phones feature ...

    www.engadget.com/2012-04-05-panasonic-cordless...

    The Panasonic KX-TG4740 and KX-TG4730 series are expandable digital cordless answering systems which feature a simplified keypad layout with fewer, larger buttons making it easier to dial. Each ...

  9. List of telephone switches - Wikipedia

    en.wikipedia.org/wiki/List_of_telephone_switches

    This lists Alcatel switches before the merger with Lucent Technologies . E10A (E10N3)- Original switch introduced in 1972 one of the earliest deployments of TDM switching in the world. E10B (E10N1)- Major revision in the 1980s which eventually saw ISDN capabilities. Common in France, Ireland, China, India and elsewhere.

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