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铁通湖南分公司管内怀化至张家界区段,采用中兴公司ZXSM-150型SDH传输设备,传输线路为光电综合缆。设备组网采用链带环的网络拓扑结构,网管系统采用中兴公司最早研发的SMC-CV1·1版本,区间各站业务配置采用1+1通道保护方式,时钟源设在怀化。该系统于1998年5月正式投入运营。为
Tietong Hunan branch tube Huaihua to Zhangjiajie section, the use of ZTE ZXSM-150 SDH transmission equipment, transmission lines for the optoelectronic integrated cable. The device networking uses the network topology of the chain ring. The network management system adopts the SMC-CV1.1 version first developed by ZTE. The service configuration of each station in each interval adopts the 1 + 1-channel protection mode and the clock source is in Huaihua. The system was officially put into operation in May 1998. for