<pre>Thank you David,<br><br>I did an IVR on Asterisk wich reads for the caller the entered digits, it's working. <br>I did traces for the same call on access side (where the dtmfs come with rfc2833 method) and the other interface where I send the dtmfs with sip info method to Cisco gateway. Both side seems to be OK, no duplicates. <br>
<br><br>Kind regards,<br><br>Szabolcs Szasz<br><br>On Mon, Mar 1, 2010 at 9:40 AM, David Backeberg <<a href="http://lists.digium.com/mailman/listinfo/asterisk-users">dbackeberg at gmail.com</a>> wrote:<br>><i> On Mon, Mar 1, 2010 at 9:25 AM, Szasz Szabolcs <<a href="http://lists.digium.com/mailman/listinfo/asterisk-users">szasz.szabolcs at gmail.com</a>> wrote:<br>
</i>>><i> Hi,<br></i>>><i><br></i>>><i> I have encountered a DTMF issue. My scenario:<br></i>>><i><br></i>>><i> Access carrier-----sip----><br></i>>><i> Asterisk-1.4.25.1-----sip---->CiscoGW-----ISDN----->TDM Switch<br>
</i>>><i><br></i>>><i> the access carrier sends to Asterisk out of band (rfc2833) dtmf, Asterisk<br></i>>><i> forwards it with SIP INFO method to Cisco gateway, but on TDM switch every<br></i>>><i> digit is duplicated. Is it possible that the carrier sends inband along with<br>
</i>>><i> rfc2833?<br></i>><i> Can you take asterisk out of the loop, terminate sip carrier straight<br></i>><i> into Cisco for testing?<br></i><br>You could also make a really simple dialplan object to do some DTMF<br>
directly with a channel on the asterisk, to see if things work<br>properly going just that far.<br><br></pre>