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。
The memory control block (MCB) shown in Fig. 1 is widely used in digital program-controlled switching systems, telecommunication equipments and other automatic control equipments.
图1所示的存储控制模块MCB在数字程控交换机等通信设备和自动控制设备中得到大量应用。
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。
The most attractive thing is that the Digital Program Control Switch System is widely applied, which is the foundation of the digitalization for the whole network.
其中最引人注目的就是广泛采用了程控数字交换机，为全网的数字化奠定了基础。
This paper introduces the component and principle of Digital Program Control Exchange Experimental System, as well as the realization of the hardware and software.
介绍一种数字程控交换实验系统的组成和原理，以及系统硬件和软件的实现。
This paper introduces the component and principle of Digital Program Control Exchange Experimental System, as well as the realization of the hardware and software.
介绍一种数字程控交换实验系统的组成和原理，以及系统硬件和软件的实现。
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