Contains
- telephone system
A communication system that transmits sound between distant points.
- radio
A communication system based on broadcasting electromagnetic waves.
- public address system
An electronic amplification system used as a communication system in public...
- intercommunication system
A communication system linking different rooms within a building or ship...
- link
A two-way radio communication system (usually microwave); part of a more extensive telecommunication...
- telecommunication system
A communication system for communicating at a distance.
- ground control
A communication system for sending continuous radio messages to an airplane pilot...