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  2. Wireless intercom - Wikipedia

    en.wikipedia.org/wiki/Wireless_intercom

    A wireless intercom is a telecommunications device that enables voice communication without the need to run copper wires between intercom stations. A wired intercom system may incorporate wireless elements. There are many types of wireless intercom systems on the market.

  3. Intercom - Wikipedia

    en.wikipedia.org/wiki/Intercom

    Encrypted wireless intercoms can reduce or eliminate privacy risks, while placement, installation, construction, grounding and shielding methods can reduce or eliminate the detrimental effects of external interference. The United States and Canada have several frequency ranges for wireless intercom systems and other wireless products.

  4. Intercoms: A History of Distance - AOL

    www.aol.com/news/intercoms-history-distance...

    From analog to digital to the cloud, how have production crew communications evolved? Clear-Com's Simon Browne takes us on a tour of the evolution of the intercom system.

  5. Clear-Com - Wikipedia

    en.wikipedia.org/wiki/Clear-Com

    The product line of Clear-Com has expanded beyond party-line wired units to include multi-channel intercoms and wireless technology. Clear-Com patented a multi-channel wired digital intercom system in 2009, used in the HelixNet product line. The company's FreeSpeak wireless intercom was nominated in 2020 for a TEC Award. [7]

  6. Public address system - Wikipedia

    en.wikipedia.org/wiki/Public_address_system

    Wireless mobile telephony (WMT) PA systems are PA paging and intercom systems that use any form of wireless mobile telephony system such as GSM networks instead of a centralized amplifier to distribute the audio signal to paging locations across a building or campus, or other location.

  7. Video door-phone - Wikipedia

    en.wikipedia.org/wiki/Video_door-phone

    A video door-phone (also known as a video door entry or video intercom) is a stand-alone intercom system used to manage calls made at the entrance to a building (residential complex, detached family home, workplace, etc.) with access controlled by audiovisual communication between the inside and outside. The main feature of video door entry is ...

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