ip phone:

Solution: Infineon chipset 
Support SIP & IAX2 protocols 
Support auto provision by WAN Port MAC address 
Two 10/100M Ethernet Interfaces 
Suport registering two SIP Servers and one IAX Server simultaneously 
Codec: G. 711 / G723/G. 729A 
Support both router and bridge mode 
Support PPPoE for xDSL 
Support Voice Mail, Call Waiting/Transfer/Holding/Conference. 
Support Voice Gain Setting, Jitter Buffer, VAD and CNG. 
Web configuration through Built-in web server. 
Upgrading firmware and configurations by HTTP, FTP or TFTP. 
DHCP Client on WAN and DHCP Server on LAN.