SDH退网策略和地市实际建设方案

SDH Offline Strategy and Actual Construction Plan of Cities

经过多年的通信建设,各地市的机房空间日益紧张,逐渐成为制约网络发展的瓶颈。随着集成虚容器交叉功能光传送网(Virtual Container-Optical Transport Network,VC-OTN)的建设以及分组传送网(Packet Transport Network,PTN)、加密虚拟网络(Secret Private Network,SPN)、无源光纤网络(Passive Optical Network,PON)的不断延伸,同步数字体系(Synchronous Digital Hierarchy,SDH)已经具备了逐步退网的条件,在网的SDH及数字配线架(Double Dragon Forever,DDF)等相关设备占用了本就紧张的机房空间和电源资源,应当加快SDH等设备的退网,以释放机房空间资源和电源资源。本文介绍了SDH系统现状和SDH系统原有主要业务的承载方案,针对性地提出了SDH的退网策略以及对原有SDH承载业务的替换方案,并给出了某地市SDH退网的实际部署案例。

After years of communication construction,the space of computer room in various cities is increasingly tight,which has gradually become a bottleneck restricting the development of network.With the development of integrated Virtual Container-Optical Transport Network(VC-OTN)and Packet Transport Network(PTN),Secret Private Network(SPN),Passive Optical Network(PON),Synchronous Digital Hierarchy(SDH)has gradually met the requirements for offline.SDH online and Double Dragon Forever(DDF)and other related devices in the network have occupied the already tight room space and power resources,so the disconnection of SDH and other devices should be accelerated to release the room space and power resources.This paper introduces the status quo of SDH system and the carrying scheme of the original main services of SDH system,puts forward the network withdrawal strategy of SDH and the replacement scheme of the original SDH carrying services,and gives a practical deployment case of SDH network withdrawal in a city.