I need help with DTMF detection issue!
Here is the scenario:
X-lite -> Nat -> Asterisk -> Nat -> GSM Gateway
When i call from x-lite, the call goes through perfectly through the nat’s to the gateways, i hear MEDIA both ways. Problem that the DTMF is not being detected.
When i talk to the GSM Gateway support, the say that the DTMF are being passed “through the media” and not as an RFC.
Please advise what does this mean? and how can this be done using asterisk 11. I have set the dtmfmode=rfc2388. i tried also all other options.
Thanks in advance!