采用反向测试法避免定时环路

Application of Reverse Test Method to Avoid Timing Loop

提出了在ＳＤＨ网络分配定时的过程中，增强Ｓ１ 字节功能，采用“ＤＵＳｆｏｒＴｅｓｔ（ＤＵＳＴ）”的反向测试方法来避免定时环路的产生。

To avoid the formation of timing loop in the process of synchronization distribution over SDH network, a reverse test method, “DUS for Test(DUST)”, is advanced as an option of enhancing the function of S1 byte. The method is suggested to be used in the synchronization equipment clock(SEC) layer.