Hi all,<br><br>I am using an asterisk-1.4.13 connected to our carrier via SIP trunk.<br>I use rfc2833 as dtmf detection method.<br>After upgrading to asterisk-1.4.15 our system would not detect dtmf<br>from a caller from PSTN anymore.
<br><br>When investigating the SIP traffic at call initiation I realized that<br>in the SDP message asterisk is no longer offering the telephone-event/8000<br>capability. So the carrier does not send the rfc2833 messages anymore.
<br><br>Does anyone know about this or has seen an open bug case for it (I haven't<br>found any myself)?<br><br>Thanks for help and feedback.<br><br>Kind Regards,<br>Andreas Brodmann<br><br>