Type of telephone not connected to the general telephone network
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 telephone. Using an intercom telephone, administrators can make announcements over loudspeakers that are heard by the entire building, but they can also call a specific classroom's intercom by dialing the room number of that classroom. Intercom telephones can be interfaced with a building's access control system.
^Sokhail, SK (Nov 2017). "Intercom System For Short Path Communication" (PDF). International Journal for Research in Engineering Application & Management. 3 (8). Retrieved 30 June 2021.
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mounted field telephones to the rear of their tanks housed typically in ammunition cans that were linked to the tank's internal intercom system. A variation...
communicate with the ship either with an intercom unit or via a telephone number that is bridged into the shipboard intercom system. Allison Fundis, chief operating...
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