Supervisory system for a primary group digital transmission...

Details Supervisory system for a primary group digital transmission... Supervisory system for a primary group digital transmission...

H - Electricity

04

B

363/22

H04B 17/02 (2006.01)

Patent

CA 1278117

ABSTRACT OF THE DISCLOSURE A supervisory system for a primary group digital transmission line wherein a terminal repeater transmits, over a supervisory line, address information designating an intermediate repeater and line within the intermediate repeater to be monitored while the line is in a normal, in-service condition. The terminal repeater and intermediate repeaters are cascaded connected by way of the supervisory line. The terminal repeater and each of the intermediate repeaters include amplifiers that receive and send information along the transmission line, and have a monitor output. monitor output is processed by an error within the terminal repeater and in each of the intermediate repeaters and the results of the error monitoring provided to the supervisory line in response to polling by the terminal repeater.

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