Patent ID: 7471898
Filing Date: 2008-12-30
Classification: H04B

Abstract:
1. A device for optical supervisory channel framing in an optical transport network system, which includes at least one of an optical transmission section, an optical multiplex section, and an optical channel section, the device comprising: a maintenance signal generator for generating a maintenance signal according to an LOS (Loss Of Signal) signal generated from the at least one section, and generating an LOS prevention signal for preventing an occurrence of another problem after a first problem by sections according to the LOS signal and an optical supervisory channel frame including an externally received maintenance signal; a maintenance transceiver for transferring the LOS prevention signal to the at least one section, or the LOS signal to the maintenance signal generator; and a central controller for multiplexing the maintenance signal and a frame-related channel including a message communication channel to generate an optical supervisory channel frame, and transmitting the generated optical supervisory channel frame to another device including a repeater and a terminal system through a single optical supervisory channel, wherein the maintenance transceiver comprises: an optical transmission section maintenance transceiver for receiving the LOS signal from the optical transmission section, transmitting the received LOS signal to the maintenance signal generator, and transferring the LOS prevention signal received from the maintenance signal generator to the optical transmission section; an optical multiplex section maintenance transceiver for receiving the LOS signal from the optical multiplex section, transmitting the received LOS signal to the maintenance signal generator, and transferring the LOS prevention signal received from the maintenance signal generator to the optical multiplex section; and an optical channel section maintenance transmitter for transferring the LOS prevention signal received from the maintenance signal generator to the optical channel section.