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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Yes they are generally independent. You can look at the version compatibility matrices to confirm your specific scenario, but I have definitely done them separately.
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">The only caveat being the license grace period for your version if they are on the same ELM/PLM and you are using CUWL licenses where they get upgraded simultaneously.
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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:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> cisco-voip <cisco-voip-bounces@puck.nether.net>
<b>On Behalf Of </b>Hefin James [ahj]<br>
<b>Sent:</b> Monday, April 23, 2018 1:13 PM<br>
<b>To:</b> cisco-voip@puck.nether.net<br>
<b>Subject:</b> [cisco-voip] UC and Unity upgrade.<o:p></o:p></span></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"><span style="font-size:11.0pt;font-family:"Arial",sans-serif;color:black">All,
<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-size:11.0pt;font-family:"Arial",sans-serif;color:black">Just working out the size of the maintenance window I'll need for UC and Unity, and just thought. Can Unity be upgraded independently
to UC?<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Arial",sans-serif;color:black">Thanks,<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-size:11.0pt;font-family:"Arial",sans-serif;color:black">Hefin<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Arial",sans-serif;color:black">Get
<a href="https://aka.ms/ghei36">Outlook for Android</a><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p>
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