Enter level ip phone .
74* 28mm character LCD .
SIP 2.0 ( RFC3261) , 2 lines .
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 .
10 kind of ring type .
Support Bridge model .
Supoort Auto Provisioning .