Line identifying system of common control type automatic exchang

Details Line identifying system of common control type automatic exchang Line identifying system of common control type automatic exchang

1976-03-26

1977-08-02

Brown, Thomas W.

H04Q 372

Patent

active

040397580

ABSTRACT:
A line identifying system for an automatic switching system of the common control type employs a line identifier adapted to be connected to any of a plurality of switch frames through a connector, which cuts off the operating circuit for a connector relay corresponding to a switch frame upon receipt of instructions from the line identifier and prepares the operating circuit of the connector relay corresponding to the switch frame upon receipt of instructions from a switch controller.

REFERENCES:
patent: 3487172 (1969-12-01), De'Raedt et al.
patent: 3746797 (1973-07-01), Meise, Jr. et al.

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