Feature Specifications
* SIP Compliant and Protocols SIP, TCP/IP/UDP, RTP/RTCP, HTTP, ARP, ICMP, DNS (A record and SRV), DHCP(client only), PPPoE, TFTP, NTP, etc.
* Networking Interfaces Dual 10/100mbps Ethernet ports.
* Voice Codecs G.711 (a/u-law), G.723.1, G.729A/B, G.726, GSM, iLBC, and G.722 (wideband).
* Superb Audio Quality Advanced Digital Signal Processing (DSP), Silence suppression, VAD, CNG, AGC
* Advanced Functionality Multi-line support, multi-party conferencing, headset enabled, expandable, intercom, AES encryption, etc.
Features & Benefits
* Support SIP (RFC3261), TCP/IP/UDP, RTP/RTCP, HTTP, ARP, ICMP, DNS (A record and SRV), PPPoE, TFTP, NTP, DHCP (client only)
* Support NAT traversal (STUN, etc), server fail-over, SIP presence (SIMPLE), and more
* Multiline support
* Graphical LCD to display up to 8 lines and 22 characters per line
* Dual 10/100Mbps Ethernet ports
* 2.5mm headset jack (versions 0.3 and 0.4 - 3.5mm headset jack)
* Support Caller ID display or block, per call or permanent
* Call waiting, hold, mute, transfer (blind or attended),forward, and more
* 3-way conferencing
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