Intercom : What is it?
| Typical intercoms consist of at least two units that can communicate to each other usually using ‘Push to Talk’ (PTT) systems. A larger intercom system can have several fixed microphone and speaker units connected to a central control panel. A small intercom system can connect a few rooms within a house, while a larger system can connect all the rooms in an entire building, school, or hospital. An intercom is also used as a communication device in TV or stage productions, race car driving, broadcasting stations for making school or public announcements, rapid transit and passenger trains, and even in malls and theaters for making announcements. Intercoms can also double as security systems for monitoring guests entering and leaving a house or building. Some intercoms with integrated video functions can be used as baby monitors and security cameras. |
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Kinds of Intercoms include the following: |
Wired Box intercoms
In a Wired Box intercom, each unit is connected to the main intercom. It can use a Push To Talk (PTT) system or a Voice Activated (VOX) system.
Wired Box-less intercoms
A Wired Box-less intercom can be made up of several headsets. The intercom is placed in the dome of each headset unit. It uses a Push To Talk system. The PTT switch is located on the dome.
Wireless intercoms
A Wireless intercom works like a two-way radio. It has an antenna for picking up frequencies.
It can only work within a certain range. It uses a Push to Talk system. |
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Configuration: Choose an intercom with a four-wire configuration that can be used with point to point, multi-point, party line, and interruptible fold back (IFB) communication.
Source and destination: For building or school use, choose an intercom capable of having as many as 200 sources and destinations for a broader range of communication. |
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