Transmission path fault detecting method and system

Details Transmission path fault detecting method and system Transmission path fault detecting method and system

1995-06-05

1997-02-04

Nguyen, Hoa T.

Excavating

371 682, H04B 346, H04B 1700

Patent

active

056006578

ABSTRACT:
A transmission line fault detecting method and system use fault detectors capable of sending and receiving a fault locating frame of an arbitrary length for reliably detecting the location in the transmission line where the fault occurred. A number of such fault detectors are incorporated in a ring transmission system, wherein each detector sends and receives a fault locating frame including a first frame bounded by a starting delimiter and an ending delimiter, and a second frame following the first frame and containing other data bounded by an ending delimiter. The fault locating frame has a large frame length, preferably on the order of 4000 bytes. The first frame is formatted according to the communication protocol inherent to the transmission system. The present invention advantageously enables even a fault of less significance to be detected with high reliability.

REFERENCES:
patent: 4509117 (1985-04-01), Korowitz
patent: 4566097 (1986-01-01), Bederman
patent: 4710915 (1987-12-01), Kitahara
patent: 5150356 (1992-09-01), Tsutsui

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