IP voice gateway
Support 32 SIP account
Support SIP 2.0 (RFC3261) and SIP related rfc
Voice code: G.711A/u, G.7231 high/low, G.729
Echo cancellation: support G.168 standard,reach to cancellation for 128ms
long-line transmission: Support telephone line for 10KM
Support VAD, CNG
SIP supports SIP domain,SIP certificate(none,basic, MD5), DNS, point to point(DIALPEER setting and IP inputting)calling
SIP support registered 32 account in the same time;Support could make calling via any account;
Support DTFM mode: SIP info, RFC2833
Support Fax :T.38、VBD、BYPASS
Support SIP application, including before the call (unconditional transfer/no answer transfer/user busy transfer), call transfer (blind turn/ask), after three calls, call hold, call waiting, call a hotline number, quickly abbreviated dial, number replace rules, restrictions, call, don't disturb, caller id, outside threats ringing, outside threats ring, etc