Digital direct response switching system

Details Digital direct response switching system Digital direct response switching system

1976-04-09

1978-09-26

Brown, Thomas W.

179 15BY, H04Q 1104, H04J 114

Patent

active

041172680

ABSTRACT:
An electronic equivalent of an X-Y switch is provided using time division multiplex techniques. The basic switch includes a multiplexing section and a control section, the control section responding to signalling information received on the multiplex line including dialing impulses to determine each successive digit as it is dialed for controlling the steering of voice and signaling information through the multiplexing section to an output of the switch designated by the received digit on one of a plurality of free levels determined by a selected time slot. Thus, a switch having plural outputs with plural levels on each output electronically operates in the manner of the known X-Y switch but with reduced physical size and lower maintenance requirements.

REFERENCES:
patent: 2802057 (1957-08-01), Ward
patent: 2827516 (1958-03-01), Morris
patent: 2928899 (1960-03-01), Flood et al.
patent: 2988601 (1961-06-01), Brightman
patent: 3860761 (1975-01-01), O'Neill, Jr.
patent: 3922495 (1975-11-01), Donohoe
patent: 4007334 (1977-02-01), McDonald

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