7号信令系统电话用户部分(TUP)的仿真设计

7号信令网是通信网中专门用来传送各节点之间网络信令的共路信令网络。由于其信令容量大，误码率低，传输效率高以及具有极强的兼容性等优点，而被广泛的运用于电话网、ISDN、移动通讯、智能网等各种网络通信业务中。本文介绍了7号信令网用户部分(TUP)的仿真系统，该系统针对7号信令网的教学需要，模拟了正常通话情况下电话用户部分信令传送及处理的全过程以及各种异常通话的信令传送及处理过程。为便于演示，在系统中加入了主被叫用户控制；为提高信令传送效率，在设计中采用了信令编码库和对信令传输通道进行复用；为使系统具有更强的可重用性和稳定性，在程序中设置各种相关数据为可修改值。

Design of Simulation for NO. 7 Signaling Network System TUP(Telephone User Part)

No.7 signaling network is a common channel signaling system for signaling transmission amongst signaling points in communications net. Because of its advantages, such as large capacity, low bit-error-ratio, high efficiency of transmission and its program compatibility, besides telecom net, No.7 signaling network is used widely in ISDN, Mobile communications, IN and so on. It introduces a simulation system coming from the TUP(telephone user part) of NO.7 signaling network in the paper, which is designed for telecommunications education. The system simulate a whole proceeding of signaling transmission and signaling processing in normal and abnormal calls. To illustrate more conveniently, users control parts are added to the system; To improve the efficiency of signal transmission, a signal encoding database and Multiplexing are adopted in the system; To enhance repeatability and stability of the system, in the program many data for example the number of links and users can be changed freely.