The line quality test, transmission quality test and fault location test can be conducted prior to operation by mean of single - ended measurement, master - slave system measurement and ATU - C/R emulation .

• 利用它可通过单端测量、主从机测量和ATU-C/R仿真等方法,进行开通前线路质量确认性测试、传输质量测试以及故障定位测试等。