Fire EvacuationCCTV CCTVPublic Access Control Public Access ControlRestricted Access Control Restricted Access ControlTime & Attendance Time & AttendanceAutomation AutomationPA Systems PA SystemsIntercoms Intercoms

PostHeaderIcon Intercommunication

An intercom (intercommunication device), talkback or doorphone is a stand-alone electronic communications system intended for limited or private dialogue. Intercoms can be portable but are generally mounted permanently in buildings and vehicles. Intercoms can incorporate connections to walkie talkies, telephones, cell phones and to other intercom systems over phone or data lines and switch electronic or electro-mechanical devices such as signal lights and door latches.

Intercoms are not to be confused with "Telephone Door Entry" systems, where the 'Intercom' facility is an option available on a system in which instruments within a building can be used to intercommunicate with each other (usually a single-dwelling), or where apartments can communicate internally with a resident porter.

Basic intercom system terms:

  • Master Station or Base Station: These are units that can control the system, i.e., initiate a call with any of the stations and make announcements over the whole system.
  • Sub-station: Units that are capable of only initiating a call with a Master Station but not capable of initiating calls with any other stations (sometimes called slave units).
  • Door Station: Like sub-stations, these units are only capable of initiating a call to a Master Station. They are typically weather-proof.
  • Intercom Station: Full-featured remote unit that is capable of initiating and receiving party-line conversation, individual conversation and signalling. May be rack-mounted, wall-mounted or portable.
  • Wall Mount Station: fixed-position intercom station with built-in loudspeaker. May have flush-mounted microphone, hand-held push to talk microphone or telephone-style handset.
  • Belt Pack: portable intercom station worn on the belt. Requires a headset or handset.
  • Handset: permanent or portable telephone-style connection to an intercom station. Holds both an earpiece and a push to talk microphone.
  • Headset: portable intercom connection from a belt pack to one or both ears via headphones with integrated microphone on a boom arm. Connects to a belt pack.
  • Paging Signal: An audible and/or visual alert at an intercom station, indicating that someone at another station wants to initiate a conversation.
  • Power Supply: Used to feed power to all units. Often incorporated into the design of the base station.
 

Design and hosting by