Transmission modes

Transmission modes

1. Simplex transmisson

   • sends data in one direction only. A radio broadcast is a good example of simplex transmission.

2. Half duplex transmission

   • Allows two wa transmissions but the devices don’t transmit at the same time. A system being used to monitor and control manufacturing processes can use half-duplex transmissions. It will send a message to the control computer, which will respond with new settings, but they both cannot send messages at the same time. Some network systems use half-duplex to maximise bandwidth.

3. Full duplex transmission

   • allows two-way communication at the same time. The telephone system, land or mobile, is an example of a full duplex system.