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铁通张掖分公司本地网二纤单向通道保护环组网结构如图1所示。它采用华为公司Optix155/622H及Optix2500+子架设备,由7个网元组成1个622Mb/s通道保护环带链。1号网元为网管中心站,集中型业务,每个网元均与1号网元有2Mb/s业务。1号网元设为跟踪内部时钟源,其余各站设为跟踪西向线
TieTing Zhangye branch local network two-fiber one-way channel protection ring network structure shown in Figure 1. It uses Huawei Optix155 / 622H and Optix2500 + subrack equipment, composed of seven network elements a 622Mb / s channel protection ring with chain. No. 1 network element is a network management center station, a centralized service, and each network element has a 2Mb / s service with No. 1 network element. The No. 1 network element is set to track the internal clock source, and the remaining stations are set to track the west line