Noise-tolerant address transmission system for digital telecommu

Details Noise-tolerant address transmission system for digital telecommu Noise-tolerant address transmission system for digital telecommu

1994-02-09

1995-07-25

Canney, Vincent P.

Excavating

371 205, 379 5, G06F 1100

Patent

active

054370230

ABSTRACT:
An improved address acknowledgement system for line elements such as repeaters in a digital telecommunication network. The system is preferably controlled by logic circuitry, in conjunction with a microprocessor. A remote facility such as a test unit transmits to the repeater a loopup command, requesting the repeater to enter loopback mode. The repeater acknowledges receipt of this command by inverting its address and transmitting the inverted address back to the test set. The test set either scans its incoming data stream for the inverted address of the line element or inverts the incoming data stream and scans the inverted incoming data stream for the non-inverted address of the line element. In either case, another line element bearing the same non-inverted address as the line element targeted to enter loopback will not interpret the inverted address as a loopup command. Accordingly, other line elements will not thereby be unintentionally caused to enter loopback mode.

REFERENCES:
patent: 5058163 (1991-10-01), Lubarsky et al.
patent: 5191326 (1993-03-01), Montgomery

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