The telecommunications are more advanced with the program-controlled exchange and digital transmission.
通讯上实现了交换程控化、传输数字化。
As a key professional specialty course of electronic information technology, program-controlled exchange has been set up at various colleges and universities generally.
程控交换技术作为电子信息类专业重要专业课程，已在各高校普遍开设。
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。
In electric power system, Digital Program Controlled Exchange has been used broadly because communications requests high reliability.
在电力系统中，由于对通信的可靠性要求较高，因此程控数字交换机正在得到广泛的应用。
In electric power system, Digital Program Controlled Exchange has been used broadly because communications requests high reliability.
在电力系统中，由于对通信的可靠性要求较高，因此程控数字交换机正在得到广泛的应用。
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