首先对欧洲标准的环路信令系统的功能作了简单介绍,然后着重就软件处理提出了两种方法——子过程调用法和综合分析处理法,阐明了这两种方法的思想并举例加以说明,接着以综合分析法为例对信令的处理过程作了全面介绍,最后初步探讨了环路信令系统中的某些不足。 First of all, the function of the European standard loop signaling system is briefly introduced. Then, two methods of software processing are put forward, that is, subprocess transfer method and comprehensive analysis and processing method. The ideas of these two methods are illustrated and exemplified Explain, and then take the comprehensive analysis method as an example to introduce the processing of signaling in the round, and finally discuss some problems in the loop signaling system.