1. Support SIP RFC3261 RFC3262 RFC3265, IAX2 protocal
2. Support G.711 / G723/G.729 codec
3. Support register two SIP and one IAX2 Servers simultaneously
4. Support PPPoE for XDSL
5. Web configuration through Built-in web server.
6. Support Bridge and both Router model
7. Support Voice Gain Setting, Jitter Buffer, VAD and CNG
8. Upgrading firmware and configurations by HTTP, FTP or TFTP
9. Power Over Ethernet or With headset funtion(Optional Parameters)
