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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Im using a tool called CCM Translator X that Paul Geralt wrote a few years back.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">I am seeing a delay in signaling for the network that is in bldg 1.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">I see the call state for normal openreceivechannel then its stationopenreceivechannelAckID and openreceivechannelAck are within a few milliseconds of each other<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">The normal time shows
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">OpenReceiveChannel at time 10.26.28.362<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Then
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">startMediaTransmission at time 10.26.28.364<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Then<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Both stationopenreceivechannelAckID and openreceivechannelAck at time 10.26.28.367
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">I see a delay in the startMediaTransmision for this particular user has a gap between the openreceivechannel and the startMediaTransmission and its also missing
the stationopenreceivechannelAckID and it seems there is a big gap in the startMedisTransmission<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">OpenReceiveChannel at time 10.26.48.523<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Then
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> Instead of startMediaTransmission starting I see that OpenReceiveChannelAck at 10.26.48.560
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Then startMediaTransmisttion starts much later at 10.26.48.617
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Calibri","sans-serif";color:#1F497D">Greg<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
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<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""> Wes Sisk [mailto:wsisk@cisco.com]
<br>
<b>Sent:</b> Thursday, April 12, 2012 10:30 AM<br>
<b>To:</b> Gregory Wenzel<br>
<b>Cc:</b> cisco-voip@puck.nether.net<br>
<b>Subject:</b> Re: [cisco-voip] Delay issues with CUCM862a Can someone point me in the right direction ??<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">heuristics say:<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">upgrade is at least OS if not server hardware replacement. did speed/duplex get set correctly? SCCP uses TCP which will retransmit lost packets but lost packets will manifest to user as delays.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Otherwise, for delay answering a bit more clarification would help:<o:p></o:p></p>
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<p class="MsoNormal">* how are they answering calls? handset/headset/speaker/answer softkey/3rd party headset lifter/bluetooth headset/...<o:p></o:p></p>
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<p class="MsoNormal">* does the phone promptly enter the offhook state? look at the lcd, does it look connected?<o:p></o:p></p>
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<p class="MsoNormal">* does the delay happen in audio cut through? i.e. phone is clearly offhook but audio does not cut through for 5-10 sec?<o:p></o:p></p>
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<p class="MsoNormal">* what model phones and what phone load?<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">ccm sdi and sdl traces can be used to investigate some of this. find offhook or answer from phone, then the callstate=5 connected, and then the subsequent openreceivechannel/startmediatransmission sent to phone. if these are "timely" in
the ccm sdi traces then the culprit is either:<o:p></o:p></p>
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<p class="MsoNormal">1. delays in the network delivering these messages<o:p></o:p></p>
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<p class="MsoNormal">2. delay in the far end device beginning to transmit or receive audio<o:p></o:p></p>
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<p class="MsoNormal">=>for this check the ccm sdi traces for signaling with the far end device. any sign of delays in signaling?<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">after clearing everything possible in the SDI/SDL traces the next step would be a packet capture at the endpoint device to investigate signaling, tcp retransmits, and RTP stream statistics there.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">For the phones there are a few known issues. From the TAC Hot Issues feed for Endpoints on
<a href="http://Cisco.com">Cisco.com</a>:<o:p></o:p></p>
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<p class="MsoNormal"><br>
Delay in starting RTP from 6941, Fixed CSCtc96381<br>
RTP sequence number gaps result in one way audio on 7960, Fixed CSCtn69362<br>
Minimize RTP Delay from HW side when answering call on RT-Lite, Open CSCtd57345<br>
delay in audio cut through on 894x, Open CSCtu08287<br>
6945 sccp: SW polling time improvement for RTL Clipping issue, Fixed CSCtq80427<br>
Intermittent one way audio on 6901 phones, Fixed CSCts39379<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">( there is one for rtp seq number looping that caused lots of problems that i cannot find at the moment, i'll keep looking but this should get you started)<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">/wes<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Apr 11, 2012, at 6:24 PM, Gregory Wenzel wrote:<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-bottom:5.0pt"><span style="font-family:"Arial","sans-serif"">I've just started troubleshooting these issues for a client whom I upgraded from ccm4.x to cucm8.6.2a.<span class="apple-converted-space"> </span><br>
They claim the problem did not exist when ccm4.x was in production.</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:5.0pt"><span style="font-family:"Arial","sans-serif"">Can someone tell me which traces are best to tblshoot kind of issue, kick me in the right direction before I start RTMT on cucm and debug on the gateways.</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:5.0pt"><span style="font-family:"Arial","sans-serif"">The problem is not system wide and only occur in this one particular building.</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:5.0pt"> <span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:5.0pt"><b><span style="font-family:"Arial","sans-serif"">Complaints</span></b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Arial","sans-serif"">Delay in answering calls in Bldg 1</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Arial","sans-serif"">Delay in transferring call in Bldg 1</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Arial","sans-serif"">Problems started immediately after the upgrade but they are telling me now 4 months later</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Arial","sans-serif"">IP Comm - Web interface is slow Sometimes when making a call you do not hear the ring tone</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:5.0pt"> <span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:5.0pt"> <span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:5.0pt"><b>Variables</b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:5.0pt"><span style="font-family:"Arial","sans-serif"">Switches used "EXTREME" brand non-Cisco and I do not have access to these switches either</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:5.0pt"><span style="font-family:"Arial","sans-serif"">No network changes occurred since the upgrade that the customer wants to admit to.</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:5.0pt"><span style="font-family:"Arial","sans-serif"">Has its own subscriber in bldg 1</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:5.0pt"><span style="font-family:"Arial","sans-serif"">Every other phone in the 2K phone sized network all register to the same subscriber do not have this issue</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:5.0pt"><span style="font-family:"Arial","sans-serif"">It uses a 2811 gateway running 12.4.24T that is on the other end of a 1 gig fiber link across the street and I have no access to the devices that connect the two
building together.</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:5.0pt"><span style="font-family:"Arial","sans-serif""> </span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:5.0pt"><span style="font-family:"Arial","sans-serif""> </span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:5.0pt"><span style="font-family:"Arial","sans-serif""> </span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:5.0pt"><span style="font-family:"Arial","sans-serif"">What major differences between signaling with version ccm4 and cucm862a would cause this?</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:5.0pt"><span style="font-family:"Arial","sans-serif"">I’m looking through the bug finder now. I would love to tell the client it’s their Extreme switches but why then would it work on the old windows version.</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:5.0pt"><span style="font-family:"Arial","sans-serif""> </span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:5.0pt"><span style="font-family:"Arial","sans-serif"">Maybe it didn’t work and the problem just go more pronounced after the upgrade.</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:5.0pt"><span style="font-family:"Arial","sans-serif""> </span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:5.0pt"><span style="font-family:"Arial","sans-serif""> </span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:5.0pt"><span style="font-family:"Arial","sans-serif"">I’m just looking for someone to point me in the right direction...:)</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:5.0pt"> <span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:5.0pt">TIA<span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p></o:p></span></p>
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<p class="MsoNormal"><br>
<br>
<br>
<span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">Greg Wenzel<o:p></o:p></span></p>
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<p class="MsoNormal"><br>
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<p class="MsoNormal"><o:p> </o:p></p>
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