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<p class=MsoNormal>Hi,<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Here’s the problem I’m “hearing”:<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Test Case #1<o:p></o:p></p>
<p class=MsoNormal>x1001 calls x1002<o:p></o:p></p>
<p class=MsoNormal>- Audio is rock solid<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Test Case #2<o:p></o:p></p>
<p class=MsoNormal>x1001 calls x3001 (Conference Bridge)<o:p></o:p></p>
<p class=MsoNormal>x1002 calls x3001 (Conference Bridge)<o:p></o:p></p>
<p class=MsoNormal>- Audio is mostly perfect. However, occasional “glitches”
in the audio can be heard<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Notes:<o:p></o:p></p>
<p class=MsoNormal>- Bypass media is switched off. FreeSWITCH routes
audio for both the bridged, and the conferenced call<o:p></o:p></p>
<p class=MsoNormal>- rtp<span style='font-family:"Arial","sans-serif";
color:black'>-</span>autoflush<span style='font-family:"Arial","sans-serif";
color:black'>-during-bridge is “true” on Sofia profile internal.xml<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Arial","sans-serif";color:black'>-
I enabled the debug trace for auto-flush in switch_rtp.c (line 1895) and see
occasional auto flush of rtp packets for *<b>both</b>* test cases. The
glitches don’t coincide with the flushing. In fact with flushing
you can’t hear when data gets flushed (2x20ms packets).<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Arial","sans-serif";color:black'><o:p> </o:p></span></p>
<p class=MsoNormal>Environment<o:p></o:p></p>
<p class=MsoNormal>- CentOS 5.4<o:p></o:p></p>
<p class=MsoNormal>- Tested on AWS EC2 Small, Medium, Large instances. On
Medium and Large CPU affinity for FreeSWITCH set to the 2<sup>nd</sup> core.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Questions:<o:p></o:p></p>
<p class=MsoNormal>- What’s different between bridging a call and a
conference call run through mod_conference in terms of audio processing? <o:p></o:p></p>
<p class=MsoNormal>- Thoughts on how to debug this?<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Thanks, Chris.<o:p></o:p></p>
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