[asterisk-users] Possibility to catch DTMF when 2 users are in a conversation

[Leo Ann Boon]

Antoine Fressancourt wrote:
> Hello,
>
> Thank you Leo for your answer,
>
> I manage to do what I want perfectly when both the caller and the 
> callee are set in SIP with canreinvite=no using SIP INFO method for DTMF.
>
> Now, I can't figure out why this can't work when I set canreinvite = 
> yes with the same DTMF method. Running Wireshark on my machine, I see 
> that the SIP INFO messages are sent to the Asterisk box running as a 
> proxy, but the INFO message doesn't trigger any action.
>
Relooking at your requirements, I'd say you must use canreinvite=no.  
Otherwise, there's no way for Asterisk to inject audio into the stream.

Leo