D-LINK DVG-7111S, VoIP Gateway, 2 10/100BASE-TX Fast Ethernet port, 1 FXS ports RJ-11, 1 FXO ports RJ-11, Dual Direction (FXO/SIP Switchable), Support Call Control Protocol SIP, T.38 and HOT LINE support, SIP Authentication, SIP STUN support, pulse/D
