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）。
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）。
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.
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