Postal and telecommunications to achieve the program-controlled exchange, digital transmission will take the lead in the province completed the first telephone counties.

邮电通讯实现了交换程控化，传输数字化，并率先在全省建成了第一个电话县。

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The telephone network based on circuit-switching and digital program controlled exchanging technology plays an important role in the whole communicating networks.

以电路交换和数字程控交换技术为基础的电话网更是在整个通信网中占据着重要的地位。

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This paper analyses all factors that influence the telephone connection of program-controlled customer exchangers and puts forward measures for raising the telephone connection rate.

分析了影响程控用户交换机电话接通率的各种因素，并结合实际情况指出提高电话接通率的具体措施。

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