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介绍一种实用的程控交换机远程维护和管理系统。给出了实现该系统的原理框图，并详细介绍了各部分的作用和具体实现技术。
Introduces a practical program-controlled switchboard remote maintenance and management system. The principle block diagram of the system is given, and the function of each part and the concrete realization technology are introduced in detail.