Transmission Mode.pptx

simplex, duplex transmission modes

1. Transmission Mode

2. Transmission Mode The term transmission mode is used to define the direction of signal flow between two linked devices. There are three types of transmission modes: 1- simplex 2- half-duplex 3- full-duplex Simplex In simplex mode the communication is unidirectional as a one-way street. Only one of the two stations on a link can transmit the other can only receive. For Example  – Traditional monitors and keyboards use the Simplex transmission mode. In this case, the monitor can only generate the output, and the keyboard can only introduce an input in the system.

3. Half Duplex In half duplex mode, each station can both transmit and receive but not at the same time. When one device is sending the other can only receive. The half duplex mode is like a one –lane road with two directional traffic. While cars are traveling one direction cars going the other way must wait . For Example  – A walkie-talkie uses the Half-Duplex Transmission Mode. Here, we send messages in both directions, but the transmission till occurs in one direction at a time.

4. Full Duplex In full-duplex mode (also called duplex), both stations can transmit and receive simultaneously. The full-duplex mode is like a two way street with traffic flowing in both directions at the same time. For Example  – Telephone networks that establish communication between two people via a telephone line use the Full Duplex method. Here, the individuals can listen as well as talk at the very same time .

5. Difference Between Simplex, Half Duplex, and Full Duplex Transmission Modes