Thanks for the quick response. <br><br>That does sound like my problem although the solutions don't apply to me. <br><br>I haven't been able to catch an active call that has these symptoms but I took a look at the last 100 calls via the show call hist voice command and the values don't look to me to show much jitter.
<br><br>There were no lost packets<br>Only a few calls had 2 or 3 late packets; one call had 7 late packets. <br>Only a few calls had non-zero values for the GapFilledWith... lines. <br><br>I might be interpreting the output wrong though.
<br><br> <br><br><div><span class="gmail_quote">On 9/11/06, <b class="gmail_sendername">Wes Sisk</b> <<a href="mailto:wsisk@cisco.com">wsisk@cisco.com</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Kris,<br><br>This sounds very similar to something we fixed long ago. Take a look<br>at 'sh voice call' to see if it's jitter:<br><a href="http://www.cisco.com/en/US/tech/tk652/tk698/">http://www.cisco.com/en/US/tech/tk652/tk698/
</a><br>technologies_tech_note09186a00800945df.shtml<br><br>CSCea35850 - Unity RTP stream has inherent jitter<br><br><br>If you are using non-default packetization periods watch out for<br>CSCed52913 Unity RTP stream has jitter with
G.729 at 30 & 60 ms and<br>G711/30ms<br><br>/Wes<br><br>On Sep 11, 2006, at 5:56 PM, Kris Seraphine wrote:<br><br>Hi<br><br>I have a customer with a multi site centralized CCM 4.13 cluster.<br>The remote sites are getting complaints of poor voice quality from
<br>customers when being transferred to Unity (which is located in the<br>central site) . The callers cannot understand the greetings and<br>describe them as choppy. There are no problems with external calls<br>transferred from the remote sites to IP phones at the central site or
<br>for intersite calls. It seems to be limited to calls where the RTP<br>stream is between a remote voice gateway and Unity. These calls are<br>G.729 so Unity has to transcode the greetings on the fly but if that<br>were the problem I'd expect remote users to have the same problem
<br>when calling into check their messages or leave messages for other<br>users. Also, the Unity server is not very heavily used; it generally<br>has no more than 9 active calls at the most.<br><br>I suspect the gateway might be the problem. It's a 2851 running
<br>MGCP. I guess I'd like to know if anyone agrees or disagrees with<br>this assumption. Also, I've had a lot of problems with MGCP code on<br>the ISRs. Can someone recommend an IOS version that is stable for<br>and MGCP gateway and doesn't suffer from DSP firmware issues?
<br><br>I should mention that Unity is version 4.04 sr1 and the gateway is<br>running 12.4(5).<br><br>Thanks<br><br>--<br>kris seraphine<br>_______________________________________________<br>cisco-voip mailing list<br><a href="mailto:cisco-voip@puck.nether.net">
cisco-voip@puck.nether.net</a><br><a href="https://puck.nether.net/mailman/listinfo/cisco-voip">https://puck.nether.net/mailman/listinfo/cisco-voip</a><br><br></blockquote></div><br><br clear="all"><br>-- <br>kris seraphine