voice over internet protocol(VoIP) network
VoIP Voice Over Internet Protocol
基于因特网的语音传输
基于IP网络的语音传输
网络协议语音服务系统
voice over Internet protocol
voice over Internet protocol gateway
Voice over Internet Protocol technology
VOIPF Voice – Over Internet Protocol Forum
VOIPF Voice C Over Internet Protocol Forum
Internet protocol over ATM
internet Protocol Internet
Transmission Control Protocol╱Internet Protocol
double modulationdata over voice
NVP Network Voice Protocol
the technology of Voice Over IP