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

[Moises Silva]

could you post the output of the asterisk console in verbose mode?

In logger.conf

[logfiles]
console => notice,warning,error,verbose,debug

Regards

On 9/15/06, Frank Church <voipfc at googlemail.com> wrote:
> The program in question is an adaptation an AGI calling card program.
> It is adapted for callback by setting by channelling the callback call
> into the context used for the normal inbound leg.
>
> When used that way entering the PIN and destination number via DTMF
> works normally.
>
> I tried to implement sms/web callback simply by passing the
> destination number and the callerid in call file's parameters, so that
> the script can go straight to dialling the destination number without
> prompting the caller for it.
>
> This method results in dead air when the call is answered at the
> destination and it seems that the absence of DTMF tones for generating
> the call is the cause.
>
> Logically it should work, why the call should result in dead air
> because the destination number was not obtained through DTMF is what I
> can't understand.
>
> It appears that the absence of DTMF stops the RTP from being
> established to the destination number  or prevents the calls from
> being joined. When I dial back to the calling  number I get the busy
> voice prompt okay.
>
> Injecting the DTMF tones on the call channel is a really a kludge to
> simulate actual key presses in the hope that the dead air problem will
> go away and it .
>
> On 9/15/06, Moises Silva <moises.silva at gmail.com> wrote:
> > Frank. PlayDTMF and SendDTMF is the same as pressing keys at the
> > phone. Im not understanding well, can you please explain a practical
> > scenario of how do you expect it to work, and how actually works? :)
> > Thanks
> >
> > Regards
> >
> > On 9/14/06, Frank Church <voipfc at googlemail.com> wrote:
> > > 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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