<div dir="ltr">In Wireshark the RTP stream delta is between 16ms and 24ms, not a constant 20ms with capture off switchport plugged into UCS. This is with CUCM updated to 8.5.1 SU6 which has the bug fix for <span style="color:rgb(31,73,125);font-family:Calibri,sans-serif;font-size:15px">CSCtz29142 from release notes. </span><div>
<span style="color:rgb(31,73,125);font-family:Calibri,sans-serif;font-size:15px"><br></span></div><div><span style="color:rgb(31,73,125);font-family:Calibri,sans-serif;font-size:15px">No VM Snapshots enabled either. </span></div>
</div><div class="gmail_extra"><br><br><div class="gmail_quote">On Wed, Feb 12, 2014 at 1:50 PM, Erick Bergquist <span dir="ltr"><<a href="mailto:erickbee@gmail.com" target="_blank">erickbee@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Thanks guys, I will check into those items. <div><br></div><div>One system having this is effected by the bug id (8.5.1.11900-21, SU1) but the other was on 8.6.2a and we updated to 8.6.2a SU3 and same issue and the bug info states it should be fixed in 8.6.2a SU3 (23900). </div>
</div><div class="HOEnZb"><div class="h5"><div class="gmail_extra"><br><br><div class="gmail_quote">On Wed, Feb 12, 2014 at 1:39 PM, Brian Meade (brmeade) <span dir="ltr"><<a href="mailto:brmeade@cisco.com" target="_blank">brmeade@cisco.com</a>></span> wrote:<br>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">What full CUCM version are you running?<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">You’re probably hitting CSCtz29142-VMware CUCM Media resources introduces jitter causing bad voice quality.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">If you get a packet capture from CUCM for one of the calls using a software resource. check the Delta values for the RTP stream in Wireshark. If you’re hitting
this bug, delta will swap back and forth between 16ms and 24ms. It should be a constant delta of 20ms in a working scenario.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Thanks,<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Brian Meade<u></u><u></u></span></p><div>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> cisco-voip [mailto:<a href="mailto:cisco-voip-bounces@puck.nether.net" target="_blank">cisco-voip-bounces@puck.nether.net</a>]
<b>On Behalf Of </b>Erick Bergquist<br>
<b>Sent:</b> Wednesday, February 12, 2014 2:19 PM<br>
<b>To:</b> voip puck<br>
<b>Subject:</b> [cisco-voip] UCS C series audio issues<u></u><u></u></span></p>
<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">Has anyone experienced choppy/garbled/broken-up audio for MoH, conference calls or MTP audio from UC Servers on UCS C series? All software based (IPVMS). <u></u><u></u></p><div><div>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">The network side is fine, QoS and no errors on the switch ports. The CPU load is minimal and CM performance minimal also, so no CPU pegging. <u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">Thanks, <u></u><u></u></p>
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<p class="MsoNormal">Erick<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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