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该文就警用集群漫游联网系统,介绍了一种PCM集中交换式多系统汇接中心的实现方法。该汇接中心与各子集群系统通过E1接口相连,PCM话音及以TCP/IP方式传送的接续信令分别占用E1中的不同时隙。
This paper describes a method of implementing a centralized switching system with multi-system tandem center for police cluster roaming networking system. The tandem center is connected to each sub-cluster system via the E1 interface, and the PCM voice and the connection signaling transmitted in the TCP / IP mode respectively occupy different time slots in the E1.