Advanced IP Phone .
57.54 x 79.2mm large dot-matrix display .
SIP 2.0 ( RFC3261) and IAX2 .
Support PoE .
2 Headset interface( 3.5mm Jack and RJ9 connector) .
Support SMS .
G.711 A/ U Law, G.722, G.723, G.729 .
Rich call control features .
G.168 Echo cancellation and VAD, CNG .
Full duplex hands-free speaker .Support SRTP .
Support basic NAT and NAPT .Support VLAN/ VPN/ DMZ .