The No. 7 signalling system is mostly used between networks and inner network in all sorts of modern telecommunication network. It plays an important role in the quality and level of service.
现代各种通信网络的网内和网间信令系统大多是七号信令系统，其对于通信网的服务质量和服务水平起着非常重要的作用。
The Message Transfer Part (MTP) of Signalling System No. 7 (SS No. 7) is designed as a joint transport system for the messages of different users.
七号信令系统的消息传递部分设计得像一个、联合传送系统，可传送不同用户的信息。
In order to solve this, problem a common channel signalling No. 7 system appears. The paper introduces how to modify DPC in HARRIS Switcher′s database in detail.
文章详细介绍了七号信令方式的结构、信令点、以及如何在HARRIS交换机数据库中修改七号信令中的目的信令点编码（DPC）。
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