摘 要光纤通信的产生和发展是电信史上的一场重要革命，特别是近年来随着数据业务的增长，网络的带宽需求呈现加速增长的趋势。这使光网络成为光纤通信技术活跃的领域。目前，同步数字系列SDH( SynchronousD igitalH ierarchy)系统已经是一种早已普遍采用的组网方式，且具有完善的自愈体系和支持TDM业务的能力。本文主要是通信网络构建。关键词：光纤通信；SDH；通信网络 1Abstract Optical Fiber Communication is the birth and development of an important history of the telecommunications revolution, especially in recent years with the growth of business data, network bandwidth demand growth has accelerated the trend. This makes optical fiber communication technology networks into active areas. At present, SDH synchronous digital hierarchy (SynchronousDigitalHierarchy) system is a Networking method has been widely used and have a good self-healing system and the ability to support TDM services. This paper is mainly communications network construction. Key words: fiber optic communications; SDH; Communication Network2引言 .11 同步数字体系(SDH)介绍 .211 SDH 简介 .212 SDH 的特点 .22 MA5300V100R003 宽带接入设备系统及硬件介绍 .221 系统概述 .2211 宽带接入技术介绍 .2212MA5300 产品定位 .2213MA5300 业务功能 .3214MA5300 产品特点 .322 功能特性 .3221VDSL 业务 .3222ADSL 业务 .43 OptiX H 硬件系统 .431 Optix155/622H 系统简介 .4311 155/622H 的 IU 板位 .4312 系统构成 .432 Optix155/622H 电接口单元 .5321OptiX 155/622H 的支路单元 .5322 支路板的功能 .533 Optix155/622H 光接口单元 .5331OptiX 155/622H 的线路单元 .5332OI2 板的功能 .54 OptiX 2500+硬件 .641 OptiX 2500+系统简介 .6411 系统整体构成 .6412 系统信号流 .7413 插板区 .