...术；电话远程控制；PIC单片机；双音多频 [gap=654]Keywords：power line carrier technology；telephone long-distance control；PIC；dual-tone multi-frequency ...
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The county to achieve the urban and rural telephone program control, county, township and village full realization of international and domestic long-distance direct-dial telephone.
全县实现了城乡电话程控化，县、乡、村全部实现了电话国际国内长途直拨。
The application in engineering electric ct gauge proves that the module realizing the long distance control through the telephone network is effective.
通过在工程电测CT仪中的应用，证明该模块通过电话线实现远程通信控制效果较好。
The long-distance control telephone interface is reassigned;
预留了远程调度电话接口；
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