The switch signal was encoded directly and one state was expressed with 3 long distance sequence code, then it was transmitted through the digital relay line of telecommunication network.

对开关信号进行直接编码，采用3个连续出现的大码距字节表示开关信号的一个状态，编码后的信号利用电信网的数字中继线路传输。

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In the distribution network which has no communication, a scheme which USES the user line subsection switch to deal with the fault of the embranchment is put forward.

在不具备通信条件的配电网中，提出采用用户进线侧分段器来对分支线路的故障进行处理的方案。

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