Dual timing circuit for telephone subscriber's instrument

Details Dual timing circuit for telephone subscriber's instrument Dual timing circuit for telephone subscriber's instrument

H - Electricity

04

M

344/13, 379/67

H04M 7/00 (2006.01) H04M 1/53 (2006.01)

Patent

CA 1210173

DUAL TIMING CIRCUIT FOR TELEPHONE SUBSCRIBER'S INSTRUMENT ABSTRACT OF THE INVENTION A dual timing circuit for use with a subscriber's telephone circuit operated in re- sponse to two manual switch operations to simulate the placement of the subscriber's phone in the "on-hook" condition for two different predetermined periods of time. One "on-hook" period being for the operation of transfer circuitry in an asssociated PABX and the other period being for the initiation of a new call.

453294

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