SDH Structure Analysis And Difficult Breakdown Discussion

SDH (Synchronous Digital System) is the standardized digital transmission structure used for transmitting the properly disposed information in the physical transmission network.This article states the turning-up of SDH transmission technology, the work principle of SDH equipment; Analyzes the interface of SDH network, bit ratio grade and signal frame structure, SDH reflection structure and transmission network structure; States the managerial ability of SDH; Inquires the methods to solve the problems of maintenance according to the basic principle of SDH and the basis of theory during the reflection process; Analyzes the real running situation of the SDH equipment in the production of CNC Anshan branch; Also puts forward some suggestions about the daily maintenance of SDH equipment.The first chapter is the instruction, which mainly introduces the turning-up background of SDH technology, the basic concept and network unit of SDH; Analyzes the characters of SDH technology; States the main aim of this article.The second chapter inquires the principle of SDH; Expounds the...