Repeater supervision

Details Repeater supervision Repeater supervision

1992-08-10

1993-12-14

Safourek, Benedict V.

Pulse or digital communications

Repeaters

Testing

178 71T, 371 202, 375 10, H04L 2520

Patent

active

052710351

ABSTRACT:
An arrangement for signalling to supervisory equipment in a repeater in a digital transmission system. A digital data test sequence comprising a plurality of multi-bit words each accompanied by a parity check bit is fed to the transmission systems. Digital supervisory signals modulate the test sequence and periodic parity violations are imposed on the test sequence. A first counter counts the periodic violations imposed on the test sequence and a second like counter counts errors in the test signals returned from the system.

REFERENCES:
patent: 3950622 (1976-04-01), Taylor
patent: 4284843 (1981-08-01), White
patent: 4387460 (1983-06-01), Boutmy et al.
patent: 4406919 (1983-09-01), Pospischil
patent: 4408325 (1983-10-01), Grover
patent: 4635260 (1987-01-01), Sestan
patent: 5060226 (1991-10-01), Gewin et al.

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