Specification :

Performance and features
Support SIP,IAX2,H323 protocol
NAT, Firewall.
It can register two SIP account and one IAX2 account in the same time.
All there 3 account can be used as called anytime,and for the caller,it can be slelected by setting different dial prefix.
DHCP client and server.
Support PPPoE, (used for ADSL, cable modem connecting).
Support major G7.xxx CODEC. VAD,CNG.
G.711 u/a; G729, G7231 5.3/6.3 audio Codec
G.168 compliant 32ms echo cancellation
Tone generation and Local DTMF re-generation according with ITU-T
E.164 dial plan and customi ed dial rules
Hotline.
Speed Dial
Call Forward, Call Transfer, 3-way conference calls
Record
Support POE [optional]
Caller ID display
DND(Do Not Disturb),Black List,Limit List
Upgrade firmware through FTP, TFTP or HTTP,.
Web management.
Telnet remote management.
adjustable user password and super password
IEEE 802.3 /802.3 u 10 Base T / 100Base TX
" Main technical index
Main chip: 150MHZ
DSP: 100MHZ
Data storage: 16MB SDRAM
Program memory: 2MB Flash memory
Application Network environment: 10 Base-T/100 Base-T
Echo cancellation:G165 16ms
Power loss: 2.7 W (max)
Power adapter: input AC 220V,output DC 9V 500mA
Employing condition:
Ambience temperature 0-40¡æ(32-104¡ãF)
Relative humidity 10-95%
Atmosphere pressure 86-106Kpa
Overall size:150 x 230 x 80(L X W X H)