Marc Scheuffler wrote:
Hi all,
I am trying to detect DTMF keys from a mobile when asterisk make an
outgoing call to the mobile.
The DTMF detection on incoming calls (also FROM mobiles) is working very
well.
The only problem is if asterisk called the phone... Nothing is detected.
I am using a digium te205p with PMX/PSTN connection.
Everything that I can find in forums are problems with dtmf detection on
SIP.
Any suggestions?
Can you hear DTMF tones from the cellphone when you call it? It is
possible they are not produced. I'm not sure if that is a handset or
network issue, but I had this happen a few years ago when implementing
an IVR that called subscribers for notification, and expected input from
them. Most of the time it worked, but some phones in some locations sent
nothing. If the phone made a call from the same location there was no
problem.
Steve
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