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Ip Phone / Voip Phone
Voip Phone, Ip phone, phone, sip phone, usb phone, skype phone, net 2 phoneProtocol:1) SIP call signaling-FC3261 with backward compatible with RFC25432) RTP (RFC1889), RTCP (RFC1890)3) SDP (RFC2327)4) NAPTR for SIP URI lookup (RFC2915)5) Messaging Waiting Indicator (RFC3842)6) DHCP7) PPPoE8) Web management9) TFTP for auto provisioningVoice processing:1) CODEC: G.711 (a-law and u-law), G.723.1A and G.729A, G.729AB2) Acoustic echo cancellation3) VAD (voice activity detection)4) CNG (comfort noise generation)Call features:1) Mute stop or resume voice transmission2) Volume adjustment: +/- the volume of handset, speaker and ringer3) Message LED:2-color LED message indication4) DTMF relay: Supports in-band RTP voice mixing and out-band DTMF over RTP (RFC2833)5) Speaker phone, handset-free, and ear phone supported6) Calling/called Caller ID7) Dial tone, DTMF generator, ring back tone, busy tone, disconnect tone, and ring tone8) Redial9) Call forwarding10) Call waiting11) Call hold12) Call transfer based on draft-ietf-sip-refer-07. Txt13) Call rejection14) Call screening15) 3-way conference on the phone16) Auto redial17) Speed dialing18) Call history:A) Most recently missed callsB) Most recently received callsC) Most recently dialed numbers19) Multiple outbound proxy, registrar and redirect server support, up to 3 different service domains
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