CUCM 4.1 to 8.5 migration.

We have an CUCM 4.1 running on only one 7825 server.
We want make upgrade to 8.6 version without hardware changes.
After reading documentation, i have got following plan:
1) Download DMA Tool from Cisco website
2) Install and run it on CUCM publsiher
3) At the end of process, i will recieve a license file
4) Write a letter on [email protected], with question about migration and license
file converting
5) After receiving upgraded license file, run 7.1 installation with option "Upgrade
ffrom Windows". It will ask you about license file, specify path to it.
I have several questions:
- How can i get 7.1 installation cd?
- Which p/n and which steps i need to complete migration from 7.1 to 8.6?

Hi Evgeniy,
I'll just add my bit to the good info from Jeremiah (+5 ) He is most correct about the server
support aspect of this so check below;
This will be a very complex process which will need to be broken up into
a number of distinct steps
The fist step for the CUCM upgrade path will be to move from 4.x to 7.x so you can leverage
the DMA upgrade/files. So I would break this down to securing a perfect DMA
.tarball (work with TAC to correct ANY errors) then the 7.x upgrade......let things
get working for a bit before the 8.6 upgrade.
This doc has the required steps for this 4.x to 7.x upgrade;
Upgrading to Cisco Unified Communications Manager Release 7.1(2) from 4.x Releases
http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/upgrade/7_1_2/upgrd712.html
First step will be to create the DMA files. These files will then be
used when you go to do your CUCM 7.1(x) build. The DMA (Data Migration Assistant) files will
allow you to move your data from the Windows 4.x build to the new Linux 7.x build.Here is the requisite info for DMA;
Data Migration Assistant User Guide
http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/dma/7_1_2/dmaug712.html
You will have to determine what version you current servers will support this is the "master" list for Server support;
Supported Cisco Unified Communications Manager Releases by Server
http://www.cisco.com/en/US/prod/collateral/voicesw/ps6790/ps5748/ps378/prod_brochure0900aecd8062a4f9.html
You will need to work with Cisco either directly via your SE, a Partner or
PUT (product upgrade tool) to secure the DVD's and pay for the proper licenses
that will enable the Software feature License for your new version.
PUT (www.cisco.com/upgrade)
Check out this great doc from Saurabh for the refresh upgrade notes for the final step to 8.6.
This Refresh Upgrade will also apply to your CUCM 8.6 final step;
https://supportforums.cisco.com/community/netpro/collaboration-voice-video/unified-comm-application/blog/2011/08/11/checklist-before-upgrading-to-unity-connection-86
Have a read of the attached .ppt as it has some really good info
Best of luck!
Cheers!
Rob
"Everything is broken" - Bob Dylan
Attachments: Microsoft PowerPoint - 0- BestPracticesforMigratingPreviousVersionsofCis_brkvvt2011-F-2.pdf (4.5 MB) Preview

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regads.
john.

John
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HTH,
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Just for the record. I found the solution to my problem. Checking more logs I read this:
The installation has encountered a unrecoverable internal error. For further assistance report the following information to your support provider.
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UCM-10.X-SW-K9=
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NB: Excuse me for my English a little light.
Cordially

Can you also check the LRO settings? Although it's not required in your scenerio to disable LRO the documentation does mention you could disable it if you are experiencing tpc traffic problems..
http://docwiki.cisco.com/wiki/Disable_LRO

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Regards

Best option would be to use Cisco Prime Collaboration Deployment
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if this helps, please rate
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