Additional Information
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 of up to 11 lines indicators (expandable to 112 lines through expansion key-module)
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
Integrated Power-over-Ethernet (802.3af)
And many more enterprise grade features