Support SIP and MGCP protocol DHCP support for LAN or Cable modem PPPoE support for ADSL or Cable modem with ROUTER build in Audio codec G.711 , G.726 , G.723 , G.729 CALL waiting,Hold,Transfer 3 way conference Set by HTTP web browser (IE6.0) or Telnet VAD(Voice active detect) CNG (Comfort noise generation) G.168/165 compliant...

Support SIP,IAX2 protocol Auto-provision firmware and configuration via HTTP Message Waiting LED and Button Large LCD with blue back light Support standard voice feature such as Call Wait,Call Hold, Call Transfer,3-way conference Audio codec G.711,G.723,G.729,GSM,iLBC etc Set phone by HTTP web browser or Keypad DHCP support for LAN...

Support SIP2.0,TCP/IP,RTP/RTCP,HTTP,ICMP,ARP,DHCP,NTP/SNTP,TETP protocols Support STUN and symmetric RTP for NAT Interoperable with various 3rd party SIP end user device , Proxy / Registrar / Server , and gateway products. Advanced 32bit embed MCU + DSP technology to ensure superior audio quality. Advanced adaptive jitter buffer control,...

Support SIP2.0,TCP/IP,RTP/RTCP,HTTP,ICMP,ARP,DHCP,NTP/SNTP,TETP protocols Support STUN and symmetric RTP for NAT Interoperable with various 3rd party SIP end user device , Proxy / Registrar / Server , and gateway products. Advanced 32bit embed MCU + DSP technology to ensure superior audio quality. Advanced adaptive jitter buffer control,...

Anti Block 2.5mm plug headset support POE Support SIP,mgcp protocol Support 4 sip accounts at the same time Support multi lines conference Support Qos,Tos Support DND(Do not destrub) Dhcp server and address pool Auto-provision firmware and configuration via HTTP server Message Waiting LED and Button Large dot-matrix LCD...

Anti Block 2.5mm plug headset Support SIP,mgcp protocol Support 4 sip accounts at the same time Support multi lines conference Support Qos,Tos Support DND(Do not destrub) Dhcp server and address pool Auto-provision firmware and configuration via HTTP server Message Waiting LED and Button Large dot-matrix LCD with back light...

Support SIP2.0,TCP/IP,RTP/RTCP,HTTP,ICMP,ARP,DHCP,NTP/SNTP,TETP protocols Support STUN and symmetric RTP for NAT Interoperable with various 3rd party SIP end user device , Proxy / Registrar / Server , and gateway products. Advanced 32bit embed MCU + DSP technology to ensure superior audio quality. Advanced adaptive jitter buffer control,...