It would help if you could isolate whether or not the audio is coming from a particular call leg. I would use pcapsipdump for this since it creates separate files for each SIP call on the system. Also, if you are using FreeTDM then you&#39;ll also need to use the ftdm trace command to capture the audio from the TDM card.<br>
<br>Once you know where the rogue audio is originating then you can start looking for a solution.<br><br>-MC<br><br><div class="gmail_quote">On Sun, Feb 17, 2013 at 11:57 PM, Imran Moinuddin <span dir="ltr">&lt;<a href="mailto:imran.moinuddin@nexdegree.com" target="_blank">imran.moinuddin@nexdegree.com</a>&gt;</span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div>Hi everyone,</div><div><br></div><div>Recently we&#39;ve been experiencing some unusual audio issues on our SIP gateway (running Freeswitch) where people on a conference are sometimes hearing periodic / digitized &#39;beeps&#39; or &#39;clicks&#39; during the call (mainly when someone&#39;s speaking). You can listen to a recorded clip from the call at:</div>


<div><br></div><div><a href="https://www.dropbox.com/s/aya3j8xkxtz0wx6/AudioSampleBeep.mp3" target="_blank">https://www.dropbox.com/s/aya3j8xkxtz0wx6/AudioSampleBeep.mp3</a></div><div><br></div><div>The caller was coming in via a landline through one of our carriers.</div>


<div><br></div><div>Our FS server wasn&#39;t under any particular strain for resources at the time nor does it seem too widespread (it happens pretty non-deterministic from what I can tell) but thought I&#39;d share in case anyone has heard anything similar in the past and if there are insights worth sharing on this.</div>


<div><br></div><div>Any feedback would be awesome,</div><div><br></div><div>Imran </div></div>
<br>_________________________________________________________________________<br>
Professional FreeSWITCH Consulting Services:<br>
<a href="mailto:consulting@freeswitch.org">consulting@freeswitch.org</a><br>
<a href="http://www.freeswitchsolutions.com" target="_blank">http://www.freeswitchsolutions.com</a><br>
<br>
FreeSWITCH-powered IP PBX: The CudaTel Communication Server<br>
<a href="http://www.cudatel.com" target="_blank">http://www.cudatel.com</a><br>
<br>
Official FreeSWITCH Sites<br>
<a href="http://www.freeswitch.org" target="_blank">http://www.freeswitch.org</a><br>
<a href="http://wiki.freeswitch.org" target="_blank">http://wiki.freeswitch.org</a><br>
<a href="http://www.cluecon.com" target="_blank">http://www.cluecon.com</a><br>
<br>
FreeSWITCH-users mailing list<br>
<a href="mailto:FreeSWITCH-users@lists.freeswitch.org">FreeSWITCH-users@lists.freeswitch.org</a><br>
<a href="http://lists.freeswitch.org/mailman/listinfo/freeswitch-users" target="_blank">http://lists.freeswitch.org/mailman/listinfo/freeswitch-users</a><br>
UNSUBSCRIBE:<a href="http://lists.freeswitch.org/mailman/options/freeswitch-users" target="_blank">http://lists.freeswitch.org/mailman/options/freeswitch-users</a><br>
<a href="http://www.freeswitch.org" target="_blank">http://www.freeswitch.org</a><br>
<br></blockquote></div><br><br clear="all"><br>-- <br>Michael S Collins<br>Twitter: @mercutioviz<br><a href="http://www.FreeSWITCH.org" target="_blank">http://www.FreeSWITCH.org</a><br><a href="http://www.ClueCon.com" target="_blank">http://www.ClueCon.com</a><br>
<a href="http://www.OSTAG.org" target="_blank">http://www.OSTAG.org</a><br><br>