► Support 5 navigation/menu/volume keys, rich function keys for: HOLD, SPEAKERPHONE, SEND/REDIAL, MUTE, TRANSFER, CONFERENCE, and MESSAGE (with message indicator), DND, PLAY, FLASH….

► Support SIP 2.0 (RFC 3261), TCP/UDP/IP, RTP/RTCP, ICMP, ARP/RARP, DNS, DHCP, NTP, PPPoE, STUN, UPNP, etc.

► Support various codecs including G.711 (PCM a-law and ulaw), G.723.1 (Option), G.729A, G.726 (Option) and iLbc(Option)

► Support standard encryption and authentication (DIGEST using MD5 MD5-sess)

► Support for Layer 2 (802.1Q VLAN, 802.1p) and Layer 3 QoS (ToS, DiffServ, MPLS)

► Support Silence Suppression, VAD, CNG, G.168, and AGC

► Support automated provisioning for mass deployment ,RTP and TLS (pending)for security protection

► Support automated NAT traversal without manual manipulation of firewall/NAT

► Support numeric Caller ID Display, Hold, Transfer, Forward, 3- way Conference, in-band and out-of-band DTMF, Call Waiting, Call Log, Off-hook Audio Dial, Audio Answer, Downloadable Ringtones,

► Sever Redundancy and Fail-over Support.

► Support syslog, full duplex hands-free speakerphone with advanced acoustic echo cancellation, redial, volume control, voice mail with indicator, downloadable ring tones.

 

► 1 line appearances with 6 speed key

► 80×39mm LCD with blacklight，support 4 lines with 16 characters every line

► AP, up to 100 items) dual switched audio –sensing 10/100Mbps network ports

► Support headset jack

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