... Compatible with asterisk,3CX,Yate based on IP PBX system;High PerformanceVoice processing capability is the most important ... Interface, Second Stage Dialing and Ring-back Tone, DTMF Auto Dial, Tone Detection, RTP voice Proxy (for NAT traversal), ... Based Configuration· Remote ProvisioningHTTP/WEB Mode, Remote Software Upgrade, Alarm, Performance DataSignaling· PSTN Side ISDN PRI Standard: ANSI, NI ...