Performance and features
    SIP v1 (RFC2543), v2(RFC3261)
    Support Route,Two 10/100Mbps MACs
    Support T.38(Doing)
    IP/TCP/UDP/RTP/RTCP/CMP/ARP/RARP/SNTP
   2RJ45 Ports,Built-in Router,conference,3 SIP account,Auto-Provison or updating by HTTP,FTP or TFTP.
   It can be register 3-SIP account in the same time and can be selected by setting different dail prefix to using the different 3 account.
    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