[Freeswitch-users] Inband DTMF Problem

Anthony Minessale anthony.minessale at gmail.com
Wed Nov 5 07:14:02 PST 2008


gather a console log at debug level and a trace of the event_socket traffic.


On Wed, Nov 5, 2008 at 9:08 AM, Klaus Teller <klaus.teller at gmx.net> wrote:

> Hi Folks,
>
> It's me again with a DTMF issue. Here is what's going on. I have a remote
> IVR and i'm writing some code to communicate with it, exercise it, and test
> it. The remote IVR is playing DTMF as inband.
>
> Right now, Freeswitch can detect all DTMF digits from the IVR. The
> interaction between my code and the IVR is essentially  a combination of
>  playing files and sending and reading DTMFs.
>
> The issue: whenever my code plays a file or send a DTMF digit, the
> following attempt to read DTMF fails. By failing i mean that there will be a
> spurious DTMF detected by Freeswitch that was not sent by the IVR.
>
> That is, if i have something like:
>
> sendDTMF("3"); getDigits("38373", "#");  // # is the termination character
>
> After executing the sendDTMF, getDigits fails because it immediately
> detects a pound. Yet this pound is not sent by the IVR. I can check this by
> having wireshark running both on the IVR's computer and on Freeswitch's
> computer.
>
> Any idea what may be causing this problem? Is there some sort of Echo going
> on or something like that?
>
> Thanks,
> Klaus.
>
>
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-- 
Anthony Minessale II

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