 - In telecommunication, duplex communication means that both ends of the communication can send and receive signals at the same time. full-duplex communication is the same thing. half-duplex is also bidirectional communication but signals can only flow in one direction at a time. Simplex communication means that communication can only flow in one direction and never flow back the other way.
An ordinary telephone conversation is a duplex communication. Most inexpensive speakerphones in conference rooms are half-duplex communication. (If you're speaking, you can't hear anyone else interrupt. You have to pause to let others speak.)
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10 Apr 2007
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