Research On The Signal Flow Of SDH Transmission

In this information age, Our production activities require high performance. The continuous development of SDH transmission system, has become the subject of ba-sic transmission network in communication network.This thesis divided the transmission signal into signal flow, alarm signal flow and clock signal flow, analyzed from the angle of bytes through the comprehensive analysis of these three types of signal transmission process, the signal flow from the packaging, multiplexing, to the whole process of transfer, remove the package.Studies show that the transmission performance of SDH transmission signal flow affects the transmission signal quality, the business flow’s effect will cause bit error or packet loss, and found that error transfer to a certain extent, will also appear in the transfer process of alarm signal flow. This article carries on the analysis, deconstruc-tion, detection, fitting of the error, and data collection and the simulation of the actual network error field, its research results can help the maintenance personnel to accu-rately judge the fault point, better processing error alarm fault.