VoIP phone USB Phone Skype Phone IP Phone telecommunication -TVP301 1. Features:IEEE 802.3 10 Base T SupportG.711A/U£¬G.723.1,G.729 /A/B/AB and GSM610 voice codec SIP,H.323 V4, IAX2 SIP RFC3261 TCP/IP: Internet protocal Support RTP RTCP protocal Sup
USB Phone Skype Phone VoIP Phone Internet Phone -TVP302 1. Features:IEEE 802.3 10 Base T SupportG.711A/U£¬G.723.1,G.729 /A/B/AB and GSM610 voice codec SIP2.0 SIP RFC3261 TCP/IP: Internet protocal Support RTP RTCP protocal Support VAD/CNG one WAN,one
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