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Intercom station: A full-featured remote unit that is capable of initiating and receiving party-line conversation, individual conversations, and signalling.Door station: Like substations, door stations are only capable of initiating a call to a master station.Substations are also known as slave units.

Substation: Units that initiate calls with a master station, but are not capable of initiating calls with any other stations.Master stations initiate calls to substations and can be configured to make announcements that are transmitted over the entire intercom system. Master station or base station: These units control the whole system.Intercom installers, suppliers, and manufacturers often use the following terms to refer to intercom components.

SVAT VIDEO DOOR PHONE PORTABLE

Motorsports race tracks often have both portable and permanent intercom stations mounted at critical points around the racecourse for use by race officials and emergency medical technicians. Performing arts venues such as theaters and concert halls often have a combination of permanently mounted and portable intercom elements.

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Portable intercoms are commonly used by special event production crews and professional sports teams. Many schools and office buildings now use audio / video systems to identify visitors trying to gain access to a locked building and can be interfaced with the building's access control system.īesides fixed locations, intercom systems are used on many types of vehicles including trains, watercraft, aircraft and armoured fighting vehicles. Intercom cameras can be used in modern offices and hotels.

Digital intercom stations can be connected using Cat 5 cable and can even use existing computer networks as a means of interfacing distant parties. Video signals can be carried as well as voice. Traditional intercoms and public address systems are composed entirely of analogue electronics components but many new features and interfacing options can be accomplished with new intercom systems based on digital connections. The latest generations are even compatible with computers and some models include TCP/IP compatibility. Some are equipped with video and its wiring (electrical installation) can be connected to the outside with a few pairs (4-6 pairs) while controlling an electric strike. Intercoms are used on a wide variety of properties from houses that only require one connection between a resident and the property's entrance to multi-unit apartments that require intercom hardware to be installed in every individual apartment. Some intercom systems incorporate control of devices such as signal lights and door latches. Intercoms can incorporate connections to public address loudspeaker systems, walkie talkies, telephones, and other intercom systems. Intercoms are generally mounted permanently in buildings and vehicles. A butler uses an intercom on behalf of a lady.Īn intercom, also called an intercommunication device, intercommunicator, or interphone, is a stand-alone voice communications system for use within a building or small collection of buildings which functions independently of the public telephone network.

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