Green China Sip/iax2 Voip Phone

Feature of China SIP/IAX2 VoIP Phone :

Support Protocol
SIP (RFC3261, RFC3262,RFC3265), IAX2; RTP and RTCP
G.168 echo cancellation standard, compliant 96ms with speaker mode
Adjust the volume: including the input/output of handset and the speaker.
Jitter Buffer, VAD, CNG,SIP/IAX2, Domain name register, point-to-point Call
Support the switch automatically of SRV main backup server
Support the Inbound/Outbound transmission; SIP info, DTMF Relay, RFC2833
NAT transversal: Support STUN, CITRON, AVS Mode
Support SIP domain, SIP Authentication (none,basic,MD5), Domain Name parse
Support two SIP server synchronously, including Pubic Server/ Private server, can make a call by either proxy
Support redundancy public server, can auto switch to backup server when host server has problem.
Support SIP application, including SIP Call forward/transfer/holding/waiting/conference
Support the presence state of server and the presence mechanism of Peer-to-peer

Network Features:

Support two models: Bridge and Router, integrate two ports router function.
Support basic NAT and NAPT.
Support PPPoE for xDSL, and support off hook auto dial.
Support DHCP Client for WAN; DHCP server for LAN.
Support DNS relay for LAN, can provide DNS service for LAN Network equipment
Support the domain parse DNS SRV in WAN port;
Support SNTP Client, can capture the time automatically from the network