缩短干线传输网业务开环时间

Shortened Trunk Transmission Network Business Open Loop Time

目前,实现长距离光纤传输仍需依靠光缆线路,而传输网络的光保护环往往需要经过几千甚至几万千米的光缆传输才能实现闭环,这种长距离的光缆传输方式将使光保护环多点中断的可能性大幅增加。光缆一旦中断,必将严重影响整个传输系统的可用率。因此,如何缩短干线传输网业务的开环时间,使干线传输网络始终保持在闭环和双通道的状态下运行,将是我们必须解决的重要课题。

At present, the realization of long distance optical fiber transmission is still rely on optical cable line, and the transmission optical network protection ring usually take thousands, even tens of thousands of kilometers of optical cable transmission can realize close loop, the long distance optical cable transmission will substantially increase the light protection ring multipoint interrupt possibility, cable once the interruption occurs, the inevitable will be a serious threat to the overall availability transmission system. Therefore, the high incidence of cable fault has brought us a serious problem is that “how to open loop time shortened” trunk transmission network business, ensure the trunk transmission network is always maintained in closed loop and double channel operating condition will be an important subject that we need to study the.