在电话交换网络中，电话和连接器之间建立的一条通路。
A connection established between a telephone and a junctor in the switching network.
对兰州供电局电力调度电话交换网络的升级改造过程进行了具体的分析和论述。
The update construction process of Lanzhou power supply electric power dispatching exchange network is analyzed and discussed in this paper.
对兰州供电局电力调度电话交换网络的升级改造过程进行了具体的分析和论述。
The update construction process of Lanzhou power supply electric power dispatching exchange network is analyzed and discussed in this paper.
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