I was assuming incoming DTMF detection.  Try toneduration=250 in chan_dahdi to 
increase the duration of transmitted DTMF on your DAHDI channels.  If that 
fixes it, try lowering it.  I find 80 usually works with even the worst IVRs.

-----Original Message-----
From: [email protected] 
[mailto:[email protected]] On Behalf Of Vladimir Mikhelson
Sent: Saturday, June 16, 2012 7:00 PM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: [asterisk-users] Help choosing the right card

Shaun, I respect your opinion, and the swap theory is one of the valid theories.

But interestingly enough, yesterday morning I had zero (0) bytes in the swap 
file and still experienced missing DTMF detection on an outgoing call.



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