该程序主要实现了个人计算机和CSM短信之间的串口通信。-The program achieved a major personal computer and the serial communication between CSM SMS.

Make PC to phone or PC to PC calls via VoIP providers Multi User Conference Unattended call transfer Call Redirection Detect DTMF user input Record calls and save to .wav files Play .wav files to the phone line Play text using Text-To-Speech (TTS) vo