<div dir="ltr"><div><div><div><div>I've seen similar things if there is an IP conflict or some type of mac-flapping. Duplicate IP addresses have been called many things. Sometimes MTPs do odd things like this. Don't think those apply here.<br>
<br>Sometimes it's a race condition - maybe that user is really speedy with how the call gets answered, and isn't a typical use case.<br><br></div>Alternatively, it could be a DSP issue. Certain DSP channels can go bad, and if that particular user is the most-called at the site they may stay on the low channels more often than other users.<br>
<br></div>Just because only one user is reporting it, doesn't mean they're the only user. There was one problem where the problem was reported heavily, then it went down, and only 1 or 2 users had problems. What happened is the other users got frustrated with reporting and just stopped, but people thought the problem had gotten better.<br>
<br></div>Just some ideas.<br><br></div>-nick<br><div><div><div><div><div><br></div></div></div></div></div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Tue, Sep 17, 2013 at 5:13 PM, Erick Wellnitz <span dir="ltr"><<a href="mailto:ewellnitzvoip@gmail.com" target="_blank">ewellnitzvoip@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"><div>Perhaps the other end is on mute? I know I've been talking away while on mute only to discover my error many minutes later. Maybe the ecall is on hold and MOH is silence?</div>
<div> </div><div> </div>
</div><div class="gmail_extra"><br><br><div class="gmail_quote"><div class="im">On Tue, Sep 17, 2013 at 3:19 PM, Norton, Mike <span dir="ltr"><<a href="mailto:mikenorton@pwsd76.ab.ca" target="_blank">mikenorton@pwsd76.ab.ca</a>></span> wrote:<br>
</div><div><div class="h5"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div vlink="purple" link="blue" lang="EN-CA">
<div>
<p class="MsoNormal"><span style="color:rgb(31,73,125);font-family:"Calibri","sans-serif";font-size:11pt">Maybe this is too obvious, but... are you sure the outside caller is saying anything? Maybe this one user has gotten their number on some spammer’s list and
they are receiving dead-air calls from an autodialer/fax/etc.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="color:rgb(31,73,125);font-family:"Calibri","sans-serif";font-size:11pt"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="color:rgb(31,73,125);font-family:"Calibri","sans-serif";font-size:11pt">-mn<u></u><u></u></span></p>
<p class="MsoNormal"><span style="color:rgb(31,73,125);font-family:"Calibri","sans-serif";font-size:11pt"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="color:rgb(31,73,125);font-family:"Calibri","sans-serif";font-size:11pt"><u></u> <u></u></span></p>
<p class="MsoNormal"><b><span style="font-family:"Tahoma","sans-serif";font-size:10pt" lang="EN-US">From:</span></b><span style="font-family:"Tahoma","sans-serif";font-size:10pt" lang="EN-US"> 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 B.<br>
<b>Sent:</b> September-17-13 12:45 PM<br>
<b>To:</b> Ryan Ratliff (rratliff)<br>
<b>Cc:</b> voip puck<br>
<b>Subject:</b> Re: [cisco-voip] Odd one-way/no audio issues with just one user<u></u><u></u></span></p>
<p class="MsoNormal"><u></u> <u></u></p>
<div>
<p class="MsoNormal">A packet capture from the phone shows the RTP stream with no audio. The operator gets calls from all locations though so the problem calls come in multiple PRIs and not just one so can't pinpoint it to a particular gateway / PRI issue.
A majority of the calls do come in the same gateway though and the PRI is clean (no errors). Let me look through the CMR records for some problem calls. I do have a TAC case on this also. Just looking for some more ideas as I've tried almost everything and
this is pretty odd. <u></u><u></u></p>
</div>
<div>
<p style="margin-bottom:12pt" class="MsoNormal"><u></u> <u></u></p>
<div>
<p class="MsoNormal">On Tue, Sep 17, 2013 at 1:09 PM, Ryan Ratliff (rratliff) <<a href="mailto:rratliff@cisco.com" target="_blank">rratliff@cisco.com</a>> wrote:<u></u><u></u></p>
<p class="MsoNormal">What do the CMR records say about those calls?<br>
<br>
-Ryan<u></u><u></u></p>
<div>
<div>
<p class="MsoNormal"><br>
On Sep 17, 2013, at 12:51 PM, Erick B. <<a href="mailto:erickbee@gmail.com" target="_blank">erickbee@gmail.com</a>> wrote:<br>
<br>
Hi,<br>
<br>
Anyone have any ideas on this?<br>
<br>
Older system, CUCM 6.1.1a (no SUs) that has been running fine for years and past 2-3 months only one user is having problems with no audio or one way audio on calls. The IP Phone user can't hear the outside caller. External calls have issue mostly. Problem
happens 1-2 times a day.<br>
<br>
We have replaced the 7962 phone, headset, put it in another switch port. Updated firmware to 8.5.2 (latest compatibile with 6.1 per docs). I have updated the IOS on the MGCP voice gateway from 12.4(15)T4 to 12.4(15)T17 and that fixed a duplicate DTMF issue
(user was hearing DTMF tones on some calls) and also seemed to help the problem calls as there are less since the IOS upgrade but still 2-3 a day compared to a dozen or so before the IOS upgrade.<br>
<br>
I haven't been able to duplicate the issue with several hundred calls in, it is very sporadic.<br>
<br>
I know the CCM version is old, thinking about applying latest SUs for 6.1 until the client can update to newer hardware. Just strange only one user having this problem. We checked around several times.<u></u><u></u></p>
</div>
</div>
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