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Consumer Electronics by S. P. Bali

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STATION INTERCONNECTIONS

The majority of digital traffic is processed through the telephone networks (see Fig. 37.15). An outgoing message is carried through twisted wire pairs to the local branch exchange, then to the receiver's local branch exchange, and finally to the subscriber's receiver. Long distance interconnections go from, the transmitter's local branch exchange to a toll exchange, from there to the destination toll exchange, then to the subscriber's branch exchange, and then to the subscriber's receiver.

 

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Fig. 37.15 Interconnections between subscribers: local and toll

 

Depending on the distance between the stations, the message ...

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