Specification :

Support 4 SIP lines
PoE (Power over Ethernet); very good handfree voice quality
Two 10/100M Ethernet Interfaces
Suport registering two SIP accounts from two SIP Servers
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.