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