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

Antoine Fressancourt af.devlist at gmail.com
Fri Jan 12 05:20:40 MST 2007


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.

Thanks in advance for your answers or hints,

Antoine

2007/1/11, Leo Ann Boon <leo at datvoiz.com>:
>
>
> >
> > exten => 1234,1,Dial(SIP/1234)
> > exten => 5678,1,Dial(SIP/5678)
> >
> > The SIP phones (X-lite) are configured to send DTMF's using RFC 2833
> > mechanism.
> >
> > I want to know if it is possible in Asterisk to catch a DTMF event
> > sent by one of the phone to trigger an action, for example to play a
> > sound/video clip to one of the phones.
> google for features.conf, But you'll need to keep asterisk in the
> callpath, i.e. canreinvite=no, otherwise the RFC2833 DTMF codes will
> only be sent between the end points. If you need to reinvite, then you
> might have to try using SIP-INFO for DTMF instead of RFC2833.
>
> Leo
>
>
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