Fault detection and isolation of fiber to the curb systems

Details Fault detection and isolation of fiber to the curb systems Fault detection and isolation of fiber to the curb systems

H - Electricity

04

L

H04L 1/24 (2006.01) H04B 10/08 (2006.01) H04J 3/14 (2006.01) H04Q 3/00 (2006.01)

Patent

CA 2108179

Abstract A fault diagnosis apparatus (3,7) for a telecommunication system (1) that transmits and cross-connects telephone signals between multiple telephone central office feeder lines (2) and telephone subscriber equipment (10) operates by retransmitting telephone signals received from the feeder lines in a digital time multiplex format at a transmission rate sufficiently fast so as to create a plurality of spare time slot channels in a retransmission frame which are available for fault diagnosis purposes. Accordingly, it is not necessary to rob feeder voice or signaling channels to perform fault diagnosis.

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