Hi,<br><br>I have encountered a DTMF issue. My scenario:<br><br>Access carrier-----sip----> Asterisk-1.4.25.1-----sip---->CiscoGW-----ISDN----->TDM Switch<br><br>the access carrier sends to Asterisk out of band (rfc2833) dtmf, Asterisk forwards it with SIP INFO method to Cisco gateway, but on TDM switch every digit is duplicated. Is it possible that the carrier sends inband along with rfc2833?<br>
<br><br>Kind regards,<br><br>Szabolcs Szasz<br>