[asterisk-users] How to send DTMF down a channel

[Frank Church]

How do you specify the channel the SendDTMF is sent on, as it has to
be variable? I am able to use PlayDTMF  to send tones using the
manager interface - the tones come up okay but it doesn't work.

My problem comes from a working callback script that I am trying to
adapt to web/SMS callback.

The script is unchanged only that in the web/sms callback the
destination number is passed in the call file variables to allow it be
dialled after the callback is answered rather than being obtained via
DTMF.

The destination call is made alright, but the called party only gets
dead air after the call is answered. It seems that the fact of
pressing the DTMF keys activates the sound channel in way that the
direct call back does not, which is why I am going through all these
hoops. I just hoped that sending some DTMF tones programmatically
would simulate the actual key presses.

Do you have any ideas of what the problem might be?



On 9/14/06, Moises Silva <moises.silva at gmail.com> wrote:
> http://www.voip-info.org/wiki-Asterisk+cmd+SendDTMF
>
> Regards
>
> On 9/14/06, Frank Church <voipfc at googlemail.com> wrote:
> > How can DTMF  be sent down a channel?
> >
> > I am thinking of method where say a channel id can be grabbed from
> > Asterisk Manager events and a DTMF signal sent down that channel,
> > through AGI, Asterisk Manager Interface or whatever?
> >
> > Is it possible to have a command in extensions.conf which can take
> > both the channel and the dtmf numbers as parameters and send the DTMF
> > signals?
> >
> > Frank Church
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