本课题的成果是一个程控交换机故障辅助诊断专家系统的设计，以及它的原型实现和评价。
The result is the design of expert system for PABX fault diagnostic, prototype and the comment of it.
这通常用于检测网络故障(电缆、交换机、路由器，等等)，其中进程仍然运行但它们之间的通信失败。
This is typically used to detect network failures (cable, switch, router, and so on) where the processes stay running but the communication between them fails.
如果无法到达这个网关，那么从您主机上的网络适配器到网关的物理连接可能有问题（例如交换机端口、线路和网卡有故障）。
If it isn't, there may be a problem with the physical connection from the network adapter on your host to the gateway (for example, a faulty switch port, cable, network card).
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