I've got a cluster on 5.1.3 and a second on 4.1.3 and they seem to talk to each other just fine, fwiw.<br><br><div class="gmail_quote">On Sun, Jun 15, 2008 at 4:53 PM, Adam <<a href="mailto:cisco@adman.net">cisco@adman.net</a>> wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">I have a setup with two CUCM 4.1(3) clusters connected via an intercluster trunk. I need to upgrade one of the clusters to 6.1(2), but due to some third party apps the second cluster will not be upgraded at the same time. Are there any caveats or limitations to having disparate versions of CUCM at each end of the trunk?<br>
<br>Thanks,<br><font color="#888888">Adam<br>
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<br></blockquote></div><br><br clear="all"><br>-- <br>Ed Leatherman<br>Senior Voice Engineer<br>West Virginia University<br>Telecommunications and Network Operations