Software
SIP v1 (RFC2543), v2(RFC3261)
Support Route,Two 10/100Mbps MACs
Support T.38(Doing)
IP/TCP/UDP/RTP/RTCP
IP/ICMP/ARP/RARP/SNTP
TFTP Client/DHCP Client/ PPPoE Client
Telnet/HTTP Server
DNS Client
NAT/DHCP Server
Support G.723.1 5.3k/6.3k，G.729，G.711 A-Law、μ-Law audio codec algorithm
Dynamic voice detection Echo cancellation Comfort noise generation
Tone generation and Local DTMF generation and detection according with ITU-T
Settings by HTTP web browser (IE6.0)
Advanced settings by Telnet
Voice prompt
Upgrade by TFTP
Electric Spec
Main chip: 32-bit RISC CPU with 125MHz clock rate
Data storage:2MB SDRAM
Program memory: 1MB Flash memory
Application Network environment: Two 10/100Mbps Fast Ethernet MAC
Echo cancellation:G165 16ms
Store quick dial number: 100
Record phone number of missed call:80
Power loss:2.7W(max)
Power adapter: input AC 220V,output DC 9V 500mA
Other Spec
Ambience temperature 0-40℃（32-104°F）
Relative humidity 10-95%
Atmosphere pressure 86-106Kpa
Overall size:113 x 80 x 28 mm (L x W x H)
Connection
VoIP Gateways 
