Remote-testing arrangement for PCM transmission system

Details Remote-testing arrangement for PCM transmission system Remote-testing arrangement for PCM transmission system

1976-07-28

1978-01-17

Claffy, Kathleen H.

H04B 346

Patent

active

040694020

ABSTRACT:
Two sets of line terminals in a pair of PCM head stations are interconnected by a set of transmission channels via a number of cascaded relay stations each including a line repeater for each channel. A service link extends from an address generator in one head station to a monitoring unit in each relay station, the monitoring unit including a regenerating circuit for throughgoing address codes and further including a discriminating network which, upon detecting an address code identifying that relay station, sends a sinusoidal priming signal to all the associated repeaters. A predetermined PCM test code, e.g. one containing a certain number of consecutive zeroes, is simultaneously transmitted from the same head station over the channel containing a selected repeater to be checked which, upon coincidence of the test code with the priming signal from the associated monitoring unit, closes a loop for feeding back the test code to the originating line terminal.

REFERENCES:
patent: 3692964 (1972-09-01), Camiciottoli et al.
patent: 3739098 (1973-06-01), Camiciottoli et al.
patent: 3764760 (1973-10-01), Marchini

Affiliated with

Also associated with

Rating

Remote-testing arrangement for PCM transmission system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Remote-testing arrangement for PCM transmission system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Remote-testing arrangement for PCM transmission system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2283219