Duplex (telecommunications)
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A duplex communication system is a point-to-point system composed of two or more connected parties or devices that can communicate with one another in both directions. Duplex systems are employed in m
Simplex wireless communication
A simple illustration of a half-duplex communication system
Communication channel
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A communication channel refers either to a physical transmission medium such as a wire, or to a logical connection over a multiplexed medium such as a radio channel in telecommunications and computer
Different types of physical transmission media supporting communication channels