Key Benefits
*     Supports 4 E1/T1 ports
*    Cost-effective VoIP trunk  gateway
*    Support  echo cancellation, DJB, VNG, VAD and QoS
*    Voice Capacity: G.711A/U,G.723.1/G.729A/B(optional)
*    Simple Configuration, friendly GUI, strong handling capacity,  stability system
*    Good compatibility, support Asterisk, Elastix, Freeswitch  etc.

 
Voice and FAX
*    G.711A/U law (G.723.1, G.729A/B, iLBC -optional)
*    Silence Suppression & Detection
*    Comfort Noise Generation (CNG)
*    Voice Activity Detection (VAD)
*    Echo Cancellation (G.168)
*    Adaptive (Dynamic) Jitter Buffer
*    Call Progress Tone Generation
*    Programmable Gain Control
*    T.38/Pass-through
*    DTMF  Mode: Signal/RFC2833/Inband

Signal
 
*    PRI
      ISDN E1/T1,Japan T1.
      ITU-T I.431, Q.921, Q.931, ETSI Q.Sig
*    R2 (optional)
 
Protocol
*    SIP-RFC3261,3262,3263,3264,
       3265,3515,2976,3311
*    SDP -RFC 2327
*    RTP/RTCP-RFC2198,1889
*    Network Protocol
        IP,TCP, UDP,TFTP, FTP, RTP, RTCP,
        ARP/RARP,ICMP Ping, NTP, SNTP,
        Http, DNS
 
Maintain and Update
*    Web based configuration
*    Data backup/restore
*    Support English and Chinese
*    Firmware upgrade by TFTP/web
*    Web & Telnet  login password modify
*    Factory reset
*    Output CDR/logs by syslog
*    Call statistics
*    NTP Configuration