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目前农村乡镇的传输设备已由SDH替换为DWDM,替换下来的SDH设备基本都处于闲置状态,为了充分利用这部分设备,降低基站的断站率,现决定利用SDH环形组网具有的自愈能力及通道倒换不需要倒换协议这些优点,在县局及其他8个乡镇之间的基站建立一个光纤传输网络。本次组网采用了深圳华为公司生产的SBS155/622SDH光传输设备,网络的拓朴结构设计为环形组网方式,倒换方式为通道倒换,光纤连接方式为二纤单向,保护方式为1+1保护。
At present, the transmission equipment in rural towns and townships has been replaced by SDH to DWDM. The replaced SDH equipment is basically idle. In order to make full use of this part of equipment and reduce the base station disconnection rate, it is decided to utilize the self-healing capability of SDH ring networking And channel switching do not need to switch the agreement these advantages, in the county bureau and eight other township base station to establish a fiber transmission network. This networking adopts the SBS155 / 622SDH optical transmission equipment manufactured by Shenzhen Huawei. The network topology structure is designed as a ring network and the switching mode is channel switching. The optical fiber connection mode is one fiber with two fibers and the protection mode is 1+ 1 protection.