Line switching system for digital data

Details Line switching system for digital data Line switching system for digital data

H - Electricity

04

Q

344/28

H04Q 3/42 (2006.01) H04L 12/00 (2006.01) H04M 3/00 (2006.01)

Patent

CA 1057837

LINE SWITCHING SYSTEM FOR DIGITAL DATA Abstract of the Disclosure A switching office for line switching digital date messages that accepts inband digital address signals and forms selective interconnections to interchange data between data lines and data trucks. Termination of a call can be initiated by either end, digital data disconnect signals being sent from one end to the other and then back to the one end. Trunk circuits disconnect the trunk from the interconnection when the disconnect signals are passing through in both directions to preclude improper disconnect due to noise or interference on the trunk line.

243240

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