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Consumer Electronics by S. P. Bali

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MESSAGE SWITCHING AND CIRCUIT SWITCHING

A message switching network is fundamentally different from a circuit switching network in that the source and destination do not react in real time. In fact, most message switching networks could deliver a message on a delayed basis if a destination node is busy or otherwise unable to accept traffic. In a message switching network there is no need to determine the status of the destination node before sending a message, as there is in circuit switching.

Message switching networks are fundamentally different from circuit switching networks in their response to traffic overloads. A circuit switching network blocks or rejects excess traffic while a message switching network normally accepts all traffic but ...

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