遵循H323规范的视频会议系统源码，使用delphi开发，-Follow the the H323 specification of video conferencing system source code, use delphi development

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