Jonathan Schulenberg Tue, 06/15/2010 - 19:27

No; 7.1(5) was tested and released after both 8.0(1) and 8.0(2). You will need to wait for a subsiquant 8.0 release to perform this upgrade.

This will be indicated in Table 4 because 7.1(5) will then be listed as a Direct Upgrade in the table for that release. Sorry to hear this wasn't clear.

htluo Tue, 06/15/2010 - 19:43

Cisco builds different "tracks" (or "trains") of software in parallel.

Maybe not a good analogy, but think CUCM 7.x is "Office 2007" and CUCM 8.x is "Office 2010".

CUCM 7.1.5 is like "the latest service pack for Office 2007".  CUCM 8.0.1 is the very first version of "Office 2010".

There's no need to "upgrade" CUCM 7.x to 8.x unless you want the "new features".  Just like there's no point to upgrade Office 2007 SP2 to Office 2010 unless you want the "new features".

Hope this helps!


Jaime Valencia Tue, 06/15/2010 - 19:53

You will be able to upgrade but not until 8.5(1) ,which a lot of people is expecting for Windows 7 compatibility, is finally released. Q4FY10 is the FCS for this release.



if this helps, please rate

madhusudhanam Mon, 08/01/2011 - 02:11


Can any one help me on how to upgrade the CUCM 7.1.5 to 8.5 in one HOP? many documents of Cisco creating confusion, provide me the correct path for the same.



madhusudhanam Mon, 08/01/2011 - 02:37

Hi Steffen,

Thanks for your response, my CUCM is 7.1.5 and i would like to upgrade this to 8.5, if you dont mind can you provide me the related path to download the software and upgradation procedure.




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