VoIP roughly 5 program to each other through voice signal, the first is a simulation of speech signal is encoded on the said side action, at present is mainly the ITU - T g. 711 speech coding standard to transform, the second program is the voice packets would be compressed, and add the address and control information at the same time, so then you can be in the third stage, namely the IP packet transmission stage, in the vast IP network to transmit side, the purpose of the objective side, the decoding reduction operations will be carried out in the IP packet, finally translates into horn, handset or headset can play the analog audio,
Related to download links://download.csdn.net/download/weixin_38712416/12227027? Utm_source=bbsseo