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One of the typical communication models (communication 101)
08/31/11 sender receiver messages messages Channel One Way: No reversal channel. e.g.. traditional Radio and TV broadcasting ( simplex mode ) Two Way: forward and backward channels to facilitate constant and interactive communications. e.g.. telephone, many Internet applications ( half or full duplex mode ) .
08/31/11 sender receiver messages messages Channel Data communications: messages are processed --- Messages are CODED information As various messages are digitized (coded), DATA communications and telecommunications are interchangeable in many cases, including our class. .