Grandstream has the same problem. Very common. A simple DTMF debouncer
curcuit will fix it.
Doug Meredith wrote:
Eric Wieling <[EMAIL PROTECTED]> wrote:
Daryll Strauss wrote:
Yep, I've seen it and from reading http://www.voxilla.com it's a
pretty common problem.
If you turn on debugging what you'll see is that the Sipura has
mistakenly detected a DTMF code in the audio stream and is relaying it
by repeating the signal (very loudly I might add)
So this appears to be a bug in the most current firmware. I've
reported it to Sipura including the debug output. Maybe more people
should do the same.
You'd think that switching to RFC2833 DTMF would fix that.
That is actually the problem. It thinks it hears DTMF so it sends an
out-of band signal. The other end receives this and produces the
audible tone.
Switching to in-band fixes it. Well, works around it. :)
Doug
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