本文件夹包含的是针对电话交换系统的C51程序源代码，包含了电话串口之间的通信功能，以及控制回铃音的程序源代码-This folder contains the telephone exchange system for the C51 source code, including a telephone communication between the serial port, and control ring back tone of the program source code

程序包含数据采集与数据分析部分、电话交换网程控交换信令识别与分析部分、GSM模块TC35 modem接口程序部分、分析控制部分。-Program includes data acquisition and data analysis part of the program-controlled telephone switching network identification and the analysis of signaling exchange, GSM module TC35 mo

程序包含数据采集与数据分析部分、电话交换网程控交换信令识别与分析部分、GSM模块TC35 modem接口程序部分、分析控制部分。-Program includes data acquisition and data analysis part of the program-controlled telephone switching network identification and the analysis of signaling exchange, GSM module TC35 mo