Patent ID: 9407360
Filing Date: 2016-08-02
CPC Classification: H04B

Claim Text:
1. An optical line monitoring method for monitoring a disorder of an optical line by using an optical line monitoring system, the method comprising: (a) delivering status request optical signals to a plurality of optical channel service units and receiving a status response optical signal from each optical channel service unit; (b) measuring a distance of each optical channel service unit based on a round-trip delay time of the received status response optical signal and storing the distance of each optical channel service unit as a reference status information table to be mapped with identification information of the corresponding optical channel service unit; (c) delivering an OTDR (Optical Time Domain Reflectometer) pulse to each optical channel service unit which is in normal operation, receiving a plurality of individual OTDR pulses returned by reflection, and storing a reference OTDR pulse pattern exhibited by the plurality of individual OTDR pulses; and (d) checking a distance of each individual pulse in the reference OTDR pulse pattern, and matching each individual pulse with the identification information of each optical channel service unit so that a proximity order of the individual pulses is identical to a proximity order of the optical channel service units in the reference status information table.