Telephony

Details Telephony Telephony

1974-07-22

1976-10-12

Cooper, William C.

H04M 348

Patent

active

039859711

ABSTRACT:
Relay trees connected to modified connector switches provide call-waiting service on a connector-group basis in step-by-step telephone switching systems. The subscriber's line is connected to an auxiliary line relay which functions to connect the line to the usual line circuit and bank terminals when normal, and to an auxiliary connector bank terminal when the relay is operated. Additional brushes added to the connector allow connection to the auxiliary bank terminal and to the regular bank terminal simultaneously.

REFERENCES:
patent: 3584156 (1971-06-01), Beth
patent: 3626107 (1971-12-01), Armstrong

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