intercom
Sign in to savethumb|upright=1.3|1980s MirTone intercom system
Article
11 sectionsContents
- Permanent systems
- Portable systems
- Basic intercom system terms
- Wired
- Two-wire broadcast intercoms
- Four-wire broadcast intercoms
- Wireless
- Telephone intercoms
- Cell phone intercoms
- See also
- References
thumb|upright=1.3|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. Intercoms are generally mounted permanently in buildings and vehicles, but can also be detachable and portable. Intercoms can incorporate connections to public address loudspeaker systems, walkie talkies, telephones, and other intercom systems. Some intercom systems incorporate control of devices such as signal lights and door latches.