理论及实例分析表明，通信系统的主—从时钟方式是电流差动保护装置在复用数字通信系统时正确工作的理想方式。

It is shown by theory and case study that the master - slave clock mode in a com munication system is ideal for proper functions of the current differential protection.

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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。

Taking the Suzhou power fiber optic communication grid as the object of research, this paper studies the transmission delay during protection and recovery in various channel failures.

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针对WDM(波分复用)光网络光层保护问题，提出了两种新的保护算法。

Against the protection problem of optical layer in WDM networks, two new protection algorithms are proposed.

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