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  2. Rauland-Borg - Wikipedia

    en.wikipedia.org/wiki/Rauland-Borg

    Rauland's healthcare product, Responder, is a nurse call system designed for direct patient-to-staff communication, intelligent call routing, and real-time reporting of patient care. [3] Rauland's education product, Telecenter, is a communications platform designed to assist school communications involving emergencies, scheduling and events ...

  3. Intercom - Wikipedia

    en.wikipedia.org/wiki/Intercom

    A butler uses an intercom on behalf of a lady. 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]

  4. Voice-operated switch - Wikipedia

    en.wikipedia.org/wiki/Voice-operated_switch

    Intercom systems that use a speaker in a room as both a speaker and a microphone will often use VOX on the main console to switch the audio direction during a conversation. The circuit usually includes a delay between the sound stopping and switching direction, to avoid the circuit turning off during short pauses in speech.

  5. Harman Kardon - Wikipedia

    en.wikipedia.org/wiki/Harman_Kardon

    Bogen was not interested so Harman resigned in 1953, [3] taking his boss, Bogen's chief designer Bernard Kardon (January 8, 1914 – April 14, 1993) with him. Naming their new company Harman/Kardon Inc., [ 4 ] each invested $5,000 (equivalent to $56,940 in 2023) in capital and opened a production facility in Westbury, New York.

  6. Kenwood Corporation - Wikipedia

    en.wikipedia.org/wiki/Kenwood_Corporation

    Kenwood is a brand of JVCKENWOOD Corporation making two-way radios including wireless DECT intercom systems, PMR446, dPMR446, dPMR, P25, DMR and NXDN. The Kenwood communications product range includes hand-portable and mobile terminals (including Intrinsically Safe and ATEX / IECEx hand-portables), repeaters, infrastructure and application ...

  7. Wireless intercom - Wikipedia

    en.wikipedia.org/wiki/Wireless_intercom

    There are many types of wireless intercom systems on the market. Most wireless intercom systems communicate by radio waves using one of the frequencies allotted by various government agencies. Some wireless intercom systems communicate using the 802.11 standard. [1] There are also systems that advertise themselves as wireless, but communicate ...

  8. Intercom telephone - Wikipedia

    en.wikipedia.org/wiki/Intercom_telephone

    An intercom telephone is a special kind of telephone that controls an intercom system. Intercom telephones can be found in residential, commercial, and educational settings. [1] For an example, a school is an environment that displays all the capabilities of an intercom

  9. Business telephone system - Wikipedia

    en.wikipedia.org/wiki/Business_telephone_system

    The original intercom KTUs, WECo Model 207, were wired for a single talk link, that is, a single conversation on the intercom at a time. The WECo 6A dial intercom system provided two talk links and was often installed as the dial intercom in a 1A1 or 1A2 key system. The 6A systems were complex, troublesome, and expensive, and never became popular.

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