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本文首先讨论一般网络的同步方式、同步定时信息的传送,然后着重讨论了 SDH/SONET网络的同步系统,最后提出了对于基准时钟和网络单元的要求.
This article first discusses the general network synchronization, synchronization timing information transmission, and then focus on the SDH / SONET network synchronization system, and finally proposed for the reference clock and network element requirements.