0 a device that people speak into when they want to communicate with someone who is inside a building, in a different room, in part of a plane, etc. --
1 a set of communications devices that allows people in different parts of a building, aircraft, ship, etc., to speak to each other --
The company specialized in electrical devices including telephones, intercoms, and fire alarm systems.
For instance, problems arose in respect of emergency lighting on the train and mayday calls being broadcast on the intercom, which meant that passengers could hear them.
Suffice to mention that by the use of an appropriate intercom system, a factory or business is contracted at pre-arranged times.
An intercom system of this kind will be one of the features of the new prototype trains currently under construction and due to be tested in passenger service.
Something comes over the intercom.
There should have been the provision of intercom telephony for engine-drivers and radar apparatus for warning of blocked lines ahead.
There is now an intercom at all stations which is centrally controlled.
There is a risk that, when passengers are told over the intercom that they will have to upgrade their tickets, there will be delay.
