Highlights:
-10 programmable hard keys and 4 XML programmable context-sensitive soft keys enhances productivity and efficiency
-Graphic TFT LCD
-6 lines appearances with individual SIP account profiles and red/green LED indicator light
-Programmable hard keys and 4 XML programmable context-sensitive soft keys
-Instant Messaging support
-Message Waiting Indicator;
-Headset jack (RJ9) for broad headset compatibility
-IPv6

Phone feature
Line 1~Line 6, can support six different SIP servers.
Flexible Dial Map: Fix length; End with #; Dial with time out
Multi-ringer able selectable and user-defined ringer updatable
Speakerphone with HD voice
Phonebook
RJ9 Headset
Dial Map Table
10 Speed dial keys with BLF/BLA function
Black list to reject authenticated call
Reject incoming call
Limit dialing out No. list
No Disturb
Caller ID, call forward, call transfer, call hold, call waiting, call forward with unconditional, busy and no answer,3 party conference
Call log of dialed call, received call and missed call

SIP
RFC Protocol Edition: RFC3261 and RFC2543
Compatible with all major SIP Servers: Cisco, Osip, Vocal, ser, Partysip, Siemens, Grandstream, etc.
Server authentication mode: none, basic, MD5
Peer to Peer SIP call
DTMF Mode: RFC2833, RELAY, SIP INFO
DNS name of SIP server
SIP signaling port setting
NAT traverse, STUN
NAT traverse, SIP Express router
NAT ALG

Physical & Environmental
Desktop / Wall mounting
Power Input: 100 to 240 ACV / 50/60Hz Output:5V DCV
Operating Temperature: 0°to +40°C (32°to +104°F)
Storage Temperature:-20°to +70°C (-40°to +158°F)
Humidity: 5% -95% non-condensing