System for interconnecting subscribers lines to an automatic...

Details System for interconnecting subscribers lines to an automatic... System for interconnecting subscribers lines to an automatic...

H - Electricity

04

Q

344/25

H04Q 11/04 (2006.01) H04Q 1/14 (2006.01)

Patent

CA 1145018

ABSTRACT OF THE DISCLOSURE In the interconnection system between telephone subscribers lines and digital telephone electronic switching equipment, individual subscriber equipment is associated with each line, which is comprised of means for providing conventional line interface functions and also a conventional two-four wire differential coupler. The four wire output of the coupler is linked to an A/D and D/A converter whose digital output is connected to an output multiplex and digital input to an input multiplex. Each individual equipment has an outgoing and return route allotted in both the input and output multiplexes. The input and output multiplexes or time shared data busses are multipled to the inputs and outputs of a plurality of basic digital switches connected by two-way digital multiplexes or data busses.

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