Analoq GSM terminal

2 FXS ports (RJ11 connector)Dialing mode: DTMF and PulseMaximum cable length: 3 kmProgrammable dial tone and polarity reversalCodecs: G.711A / U, G.723.1, G.729A / B, G.726Fax: T.38 and Pass-throughCaller ID: DTMF / FSK CLI PresentationFully compatible with leading IMS / NGN and SIP IP telephony sys..