> I'd be curious to know what Digium has to say or if others had similar > issues. If you have been able to fix this issue, let us know what was the > resolution.
I have had DTMF issues in the past, but have never been unable to resolve them. My solution is to set rfc2833 everywhere, on the Asterisk box, insist on it from my origination/termination providers, set Sipura devices' DTMF Tx Method to AVT and other devices to whatever they call rfc2833. To ensure your devices are correctly negotiating rfc2833 for DTMF, ensure there is reference to payload type 101 in the "INVITE" and responding "OK" SIP messages. Nabeel
