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(专利号:94211535.X) 该机具备通信线路性能检测、高峰值音频信号输出、电缆芯线对号等6种功能,可以和磁石、共电、自动电话总机并网充当查线电话机使用。在脱离开电话总机线路的情况下,本机又能和各种电话机实现有线双机对讲(大容量的电话装机、改线工程和抢修通信线路中断故障最为实用)。
(Patent No .: 94211535.X) The machine is equipped with communication line performance testing, high peak audio signal output, cable core alignment and other 6 kinds of functions, and magnets, a total of electricity, automatic telephone switchboard and act as check telephone . In the case of leaving the telephone switchboard line, the machine can also achieve dual-talk intercom with a variety of telephone (high-capacity telephone installed, re-line engineering and repair communication lines break down the most practical).