论文部分内容阅读
介绍了双向复用段倒换环的工作原理。以苏州电力光纤通信网西外环为对象,研究了各种通道故障下复用段保护切换、恢复过程中通道时延的变化情况。研究结果表明:苏州电力光纤通信网西外环采用双向复用段倒换模式,即使在保护切换、恢复过程中也能保证通道双向时延一致,适用于包括采用数据通道同步方法线路纵差保护在内的任何线路纵联保护。
Introduces the working principle of bidirectional multiplex section switching ring. Taking the west outer ring of Suzhou Power Fiber Optic Communication Network as an example, this paper studies the changes of channel delay during the switchover of multiplex sections under various channel faults. The results show that the bidirectional multiplex section switching mode is adopted in the west outer ring of Suzhou Power Optical Fiber Communication Network to ensure the same two-way delay even in the process of protection switching and recovery. Within the line of any protection.