H - Electricity – 04 – Q
Patent
H - Electricity
04
Q
344/25
H04Q 11/04 (2006.01)
Patent
CA 1120570
Slana-Vaughan 14-29 TIME SLOT INTERCHANGE WITH PROTECTION SWITCHING Abstract of the Disclosure Time-slot interchange circuitry for use in a time-division switching system is disclosed having n+l input interface units and n+l output interface units to serve n PCM lines. One of each group of n+l interface units is designated a spare unit and control circuitry is disclosed for autonomously chan- neling 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.
330118
Slana Matthew F.
Vaughan Henry E.
Kirby Eades Gale Baker
Western Electric Company Incorporated
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