Teletypewriter loop switching matrix

Details Teletypewriter loop switching matrix Teletypewriter loop switching matrix

1979-12-07

1981-09-01

Robinson, Thomas A.

Telegraphy

Systems

H04L 1500

Patent

active

042873878

ABSTRACT:
A system for interconnecting and switching teletypewriter or digital data gnals when transmitted over any of the four universally accepted standard signal loops. The system incorporates a novel triple loop arrangement; an "IN" loop connected to a signal source, an "INTERNAL" loop to provide switching and an "OUT" loop connected to the signal destination. Each "IN" loop or "OUT" loop together with half of its associated "INTERNAL" loop is implemented in a single printed circuit card. The system can incorporate any number of "IN" and "OUT" loops and the associated "INTERNAL" loops.

REFERENCES:
patent: 3395245 (1968-07-01), Harris
patent: 3588320 (1971-06-01), Guzak, Jr.
patent: 3867567 (1975-02-01), Herron et al.
patent: 4107474 (1978-08-01), Schneider

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