Intercom Systems

What are Intercom Systems?

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.

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.


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).

Intercom Systems Sydney
Sydney Intercom Systems

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

A 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

A portable intercom station worn on the belt. Requires a headset or handset.


Permanent or portable telephone-style connection to an intercom station. Holds both an earpiece and a push to talk microphone.


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.

Stallion Security provides, installs and maintains AIPHONE Intercom Systems to suit your home or office building.

Call us now on 1300 555 363