Time-slot interchange with protection switching

Details Time-slot interchange with protection switching Time-slot interchange with protection switching

1978-06-27

1979-07-03

Brown, Thomas W.

179 15BF, H04J 300

Patent

active

041601270

ABSTRACT:
Time-slot interchange circuitry for use in a time-division switching system is disclosed having n+1 input interface units and n+1 output interface units to serve n PCM lines. One of each group of n+1 interface units is designated a spare unit and control circuitry is disclosed for autonomously channeling incoming data words or outgoing data words through a spare unit and for autonomously altering the control for the spare unit in the event of failure of a unit in service.

REFERENCES:
patent: 3886318 (1975-05-01), Charransol et al.
patent: 3959596 (1976-05-01), Bojanek et al.
patent: 4074072 (1978-02-01), Christensen et al.

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