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  2. Video door-phone - Wikipedia

    en.wikipedia.org/wiki/Video_door-phone

    Video door entry consists of both outside and indoor elements: an outdoor panel on the outside, an electronic lock release, and an indoor monitor. The outdoor panel or street panel is installed beside the entrance door or gateway and incorporates different elements ready for use in any climate conditions: one or several pushbuttons to make the call (usually one per home or apartment), a micro ...

  3. Door phone - Wikipedia

    en.wikipedia.org/wiki/Door_phone

    Video door phone indoor terminal.. Going a little further in time, we find video door phones featuring a video installation apart from the classical audio. In these cases, the intercom plate has the same structure as the previous version but features a video monitor connected to a surveillance camera that allows inspecting the person who pressed the button and part of the surrounding area.

  4. Intercom - Wikipedia

    en.wikipedia.org/wiki/Intercom

    1980s MirTone intercom system. An intercom, also called an intercommunication device, intercommunicator, or interphone, is a stand-alone voice communications system for use within a building, small collection of buildings or portably within a small coverage area, which functions independently of the public telephone network. [1]

  5. Issabel - Wikipedia

    en.wikipedia.org/wiki/Issabel

    Issabel is open-source Unified Communications PBX software, providing user-friendly web-based configuration, management, and reporting for telephony. Modules providing predictive dialing can be added.

  6. Wireless intercom - Wikipedia

    en.wikipedia.org/wiki/Wireless_intercom

    One reason to use a wireless intercom system is that the cost of retrofitting a building for a wired intercom system is high. Another reason is the increased portability of a wireless system. With battery-powered radio frequency wireless intercom units, a person can carry a station as they walk around.

  7. NuTone - Wikipedia

    en.wikipedia.org/wiki/NuTone

    NuTone is an American company that manufactures products mainly for residential use, including doorbells, intercom systems, indoor air quality products, ventilation systems, range hoods, ceiling fans, built-in electric heaters, ironing equipment, and home theater systems. The company was founded in 1936 by J. Ralph Corbett in Cincinnati, Ohio. [1]

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  9. Microsoft Response Point - Wikipedia

    en.wikipedia.org/wiki/Microsoft_Response_Point

    An Aastra 6753i RP phone a typical Response Point phone. Microsoft Response Point was an advanced software-based telephone system developed by Microsoft.Response Point, a PBX system targeting small businesses with less than 50 employees, [1] [2] was launched in March 2007, with systems available on the market in the fourth quarter of that year. [1]