Monitoring system for telecommunication links equipped with repe

Details Monitoring system for telecommunication links equipped with repe Monitoring system for telecommunication links equipped with repe

1980-04-18

1982-06-08

Orsino, Jr., Joseph A.

Multiplex communications

Wide area network

Packet switching

17917531R, 455 15, 455 18, H04J 116

Patent

active

043343031

ABSTRACT:
Monitoring system for a forward and backward link equipped with two way repeaters-regenerators comprises a monitoring station including means for transmitting through the forward link information data and a low frequency control signal and for receiving through said backward link information data and supervisory words respectively monitoring the performance of the repeaters-regenerators and identifying errors made therein. In each repeater regenerator a supervisory word is stored in a shift register and advance pulses for said shift register are obtained by frequency division of the low frequency control signal. The supervisory word is completed by a start bit and a stop bit, and modulates the low frequency control signal. The modulated start stop supervisory word is transmitted to the monitoring station through the backward link.

REFERENCES:
patent: 2514367 (1950-07-01), Bond et al.
patent: 3458661 (1969-07-01), Forde et al.
patent: 3987395 (1976-10-01), Desombre et al.
patent: 4083003 (1976-04-01), Haemmig

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