I am going to upgrade the OS level that we are running. Currently we are at 2000-2-7(sr8).
I have downloaded the upgrade path to 2000-4-4a.exe
Additionally I have downloaded 2000-4-4sr8.exe to install after the main OS 2000-4-4a upgrade.
That should leave our cluster at OS release 2000-4-4sr8
I understand this is an accepted level to be at to then upgrade the actual *CallManager* platform from 3.3(3)sr4 to 3.3(5)sr2.
We need to get to 3.3(5)sr2 to support the newer 7961 IP Phones.
Can anyone advise me of the actual path (ie software i need to download and install) to upgrade the CCM platform from our current version to the newer one? The Cisco support site isn't very clear on ANY upgrade paths - even the Upgrade Matrix is confusing and unclear... lol
Any thoughts appreciated. I am hoping it is a single install and not a 2 or 3 step process! The OS upgrade will be painful enough :o(
- install 3.3(5)sr2 upgrade. No additional patches, firmware or device packs will be needed.
Thanks for your kind words :) The file you listed is just the sr. The file you want is this one;
Here is the Readme;
The BARS pre-req is a must! Don't skip this step. We did this upgrade in the Lab prior to actually rolling it out and we used the Upgrade discs from Cisco (but the download file should be just fine). The one issue we ran into involved a small change to our PRI's if you are running DMS100 Protocol. This tripped us up a bit but was listed in the sr2 Readme which we hadn't read carefully enough :(
As far as one single install window, I would allow 8-10 hours just to be safe. Add up all the times listed in the Step by Step I sent to give you an idea of the times involved.
Hope this helps!