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ＤＡＣＳⅡ数字交接系统抖动指标的测试天津市市内电话局朱久茹根据通信网扩容和建设Ｎｏ。７信号网的计划，我局引进了部分ＤＡＣＳⅡ数字交接设备。为了检验其在网上运行是否正常，１９９５年７月我局计量室利用ＥＰＥ５１测试仪对该系统的有关性能指标进行了测试。由于...
DACS Ⅱ digital hand-over system jitter index test Tianjin City Telephone Bureau Zhu Jiuru according to the expansion and construction of communications networks No. 7 signal network planning, the Bureau introduced some DACS Ⅱ digital transfer equipment. In order to test its operation in the Internet is normal, in July 1995 Bureau metering room using EPE51 tester on the performance of the system were tested. due to...