A市本地SDH传输网设计方案.doc

石家庄科技信息职业学院 毕 业 论 文 题目： A 学 号： 姓 名： 专业班级： 通信技术 指导教师： 完成日期： 201年12月24日 摘 要 SDH(Synchronous Digital Hierarchy，同步数字传输体系)是一种将复接、线路传输及交换功能融为一体、并由统一网管系统操作的综合信息传送网络，是美国贝尔通信技术研究所提出来的同步光网络(SONET)。国际电话电报咨询委员会(CCITT)(现ITU-T)于1988年接受了SONET概念并重新命名为SDH，使其成为不仅适用于光纤也适用于微波和卫星传输的通用技术体制。它可实现网络有效管理、实时业务监控、动态网络维护、不同厂商设备间的互通等多项功能，能大大提高网络资源利用率、降低管理及维护费用、实现灵活可靠和高效的网络运行与维护，因此是当今世界信息领域在传输技术方面的发展和应用的热点，受到人们的广泛重视。 关键词：SDH、传输系统、通信网、综合信息传送网络。 Abstract We know that in todays society is information society，Highly developed information society can provide a variety of communication network，A variety of telecommunication services．Transmission through the communication network，exchange，deal with the amount of information will continue to increase．This requires the modernization of communication networks to digital. integrated and intelligent direction and personal development． SDH(Synchronous Digital Hierarchy)is an multiplexer，line transmission and switching capabilities into one， unified network management system operated by the General information transmission network． Advisory Committee on International Telephone and Telegraph(CCITT)(now ITU—T)in 1 988 to accept the concept of the SONET and SDH renamed．Applies not only to make it also applicable to fiber-optic microwave and satellite transmission system of the Common Technical．It may realize the network effective management，the real·time service monitoring，the dynamic network maintenance，intercommunication between the different manufacturer equipment’s and SO on many functions．It Can raise the network resource use factor，reduce the management and the maintenance cost greatly， realizes nimble reliable and the highly effective network movement and the maintenance．Therefore is now the world information field in the transmission technology aspect development and the application hot spot．Receives the people widely to take seriously． Keywords：SDH、Transmission system、Communicat