Monitoring method for stand-by circuits suitable for a multiplex

Details Monitoring method for stand-by circuits suitable for a multiplex Monitoring method for stand-by circuits suitable for a multiplex

1990-05-29

1993-02-16

Kuntz, Curtis

Multiplex communications

Wide area network

Packet switching

370 16, 370 84, H04J 116

Patent

active

051877040

ABSTRACT:
In a multiplexing/demultiplexing apparatus, readiness of stand-by circuits is monitored through a variety of switching arrangements, by routing a monitoring signal through the circuits. In one alternative embodiment, level correcting means are provided so that the monitoring signal is kept at the proper level, thus ensuring accurate monitoring of the stand-by circuits.

REFERENCES:
patent: 4046964 (1977-09-01), Daugherty et al.
patent: 4376998 (1983-03-01), Abbott et al.
patent: 4567587 (1986-01-01), McDermott
patent: 4712209 (1987-12-01), Kuritami et al.

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