[Freeswitch-users] session.steamFile misses DTMF event for first few seconds

[Alberto Escudero]

How are you  receiving those DTMFs, inbound or outbound? Are those calls
coming from a mobile network (GSM). We have experienced lots of problem
with DTMF detection in noisy lines.

/aep
-- 
Stopping junk mailers is good for the environment

> I recently upgraded from FS 12790M to svn 17188.  When I did, I noticed
> that session.streamFile behaved differently and I started having
> problems with my IVR app.
>
> With the upgraded FS, I have a problem with streamFile no firing on the
> DTMF and calling the callback function for the first few seconds of the
> wav file playback.  It behaves as though it does not hear the DTMFs.  If
> I wait for 2 seconds or so of the wav file and then DTMF, streamFile
> catches the DTMF and all is well.  If I key as soon as I hear the wav
> file start, streamFile just keeps playing the wav and does not call the
> callback function.
>
> When I revert back to the previous version of FS, streamFile always
> fires the callback right away no matter how quickly I press the first
> DTMF as the wav file starts to stream out.
>
> The wave file is RIFF (little-endian) data, WAVE audio, Microsoft PCM,
> 16 bit, mono 8000 Hz
>
> The snippet of js code I am using is as follows.
>
> if(session.ready()) {
>     session.answer();
>     session.sleep(750);
>     while(session.ready()) {
>         session.sleep(500);
>         session.flushDigits(); // clear out input buffers
>
>
> if((pin=session.streamFile(snd_prefix+"/enter-acct-numbers.wav",onlyDigi
> ts_cb,""))===false) {
>             pin=session.getDigits(pinmax,pinterm,pinwait);
>         } else {
>             pin+=session.getDigits(pinmax-1,pinterm,pinwait);
>         }
>         // more code here..
>     }
>
> Do I need to change the way I use streamFile in the later release?
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