Hi all,
(Keith is probably best suited to answer this, but I wanted the discussion to
be open...)
I'm actually using Jaro's experimental version of sipxtapi, and I noticed that
the latest branch there includes the SimpleDtmfDetector which is used to detect
inband DTMF. I also noticed that this class was written by Keith, hence I'm
asking this question here. The point is that I needed the inband DTMF version
some time ago, and therefore I went with the experimental branch which at that
time included an inband DTMF detector written by Stipus. A few months ago I
started to receive complaints from certain users, the application seemed to be
receiving "ghost" DTMF signals at random times (mostly the digit 1). Recently
I switched to the detector written by Keith, and apparently these "ghost"
signals are less common now, but not completely gone.
So my question is: what could possibly be causing these ghost signals? The
users (which are doctors working in hospitals) claim that there are not
necessary any external devices beeping around them, at least not at all
occasions.
Any ideas? Unfortunately these ghost signals are not easily reproduced, so any
debugging must be done by logging and hoping that these signals will reveal
themselves quickly (and also hoping that the presence of logging doesn't create
a Heisenbug!).
Regards,Daníel
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