I still suspect something in FreeTDM. From Nathan&#39;s perspective that would be &quot;inside&quot; FreeSWITCH since that&#39;s the TDM stack we use. I highly recommend you open a trouble ticket with Sangoma and have each person who is experiencing the issue put a comment on the case and offer to supply configs, logs, and/or access that Sangoma would need to do troubleshooting.<br>
<br>-MC<br><br><div class="gmail_quote">On Fri, Apr 13, 2012 at 12:35 AM, Daniel Knaggs <span dir="ltr">&lt;<a href="mailto:Daniel.Knaggs@realitysolutions.co.uk">Daniel.Knaggs@realitysolutions.co.uk</a>&gt;</span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">That&#39;s very interesting, Nathan.<br>
<br>
Now that makes three of us, two using the Digium cards and one using a Sangoma.<br>
<br>
<br>
It very much looks like something FreeSwitch is doing, perhaps the DTMF detection is far too sensitive?  Are DTMF tones for an ISDN line inband or do they come in on the D-channel?<br>
<br>
<br>
Michael - any ideas what we can all do?<br>
<br>
<br>
<br>
<br>
From: Nathan Eisenberg [mailto:<a href="mailto:nathan@atlasnetworks.us">nathan@atlasnetworks.us</a>]<br>
Sent: 13 April 2012 00:21<br>
To: Daniel Knaggs<br>
Subject: [Freeswitch-users] Strange DTMF Tones On Inbound Calls<br>
<br>
I&#39;m having the exact issue you&#39;re describing, with the same card.  However, what&#39;s interesting to me is that if I fire up Asterisk instead of freeswitch, the phantom DTMF problem disappears entirely.<br>
<br>
So it&#39;s *something* inside Freeswitch, at least for me.  Would be interesting if you&#39;re able to do a similar test.<br>
Nathan Eisenberg<br>
Atlas Networks | Sr. Systems Administrator<br>
office: <a href="tel:206.577.3078" value="+12065773078">206.577.3078</a>  |  <a href="http://www.atlasnetworks.us" target="_blank">www.atlasnetworks.us</a><br>
<div class="HOEnZb"><div class="h5"> D<br>
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Daniel Knaggs<br>
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