Main Features:
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Support SIP (RFC3261), TCP/IP/UDP,
RTP/RTCP, HTTP, ARP, ICMP, DNS (A record and SRV), DHCP, PPPoE, TFTP, NTP
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Support NAT traversal (STUN,
etc), server fail-over, SIP presence (SIMPLE), and more
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Multiline support of up to 11
lines indicators (expandable to a few dozen more through expansion key-module)
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Graphical LCD to display up
to 8 lines and 22 characters per line
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Dual 10/100Mbps Ethernet ports
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Headset jack
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Support Caller ID display or
block, per call or permanent
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Call waiting, Hold, Mute, Transfer
(blind or attended), Forward, and more
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Multi-party conferencing
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Integrated Power-over-Ether
(802.3af and Cisco style)
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And many more enterprise grade
features
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