03-27-2019 06:14 AM
A little later in April, I am planning to upgrade both Cisco Call Manager and Cisco Unity to version 12.5.1 from our current version of 11.5.1.13902-2 which we upgraded to in 2016 or so. I am curious if anyone has any recommendations about doing this? I will of course read the release notes and upgrade instructions, but I wanted to get a sense of how the upgrade will look, if it is major or minor in terms of features and interface changes.
When we upgraded from 8.6 to 10.5 we needed to change the virtual machine specs, will we need to do this from 11.5 to 12.5.1?
We looked up the depreciated phone list for 12.5.1, but couldn't find any information on 12.0 itself, is this the same list?
Again, I am not looking to circumvent reading the upgrade suggestions, just hoping those who went through this already could give me some tips. I am not the phone admin, but I assist in the server upgrades and I wanted to be proactive for my institution. Thank you for absolutely anything you can suggest.
03-27-2019 08:08 AM
I applaud that you're going to read the documentation for this, but that should have been your first step prior to posting, as many of the things you're asking, are already covered in the documentation.
New features and changes to the interface are covered in the RNs.
New deprecated phones on 12.5, also covered in the RNs
To know if you need to adjust the VM specs, you compare the OVAs in the virtualization wiki. At the very least, the VM HW will need to be upgraded (if you haven't done so already)
You also need to add to your reading list the 12.5 OVA README, along with the upgrade guide and RNs
03-27-2019 08:42 AM
Totally understand and agreed Jaime, but the thing is I was more looking for someone to jump in and say "hey, this thing happens when you are upgrading that you should really know about, it isn't directly covered in the release notes or upgrade guide. More looking for those tangential things. If anyone has any of those I would greatly appreciate those sort of insights.
Promise I will read though.
10-30-2019 07:16 AM
Hello Rogalskij,
We're in that place right now, upgrading from 11.5 SU4 to 12.5 SU1, were you successful in your upgrade? Did it go well? anything unexpected that was outside of the Cisco documentation? Any other recommendations?
10-30-2019 09:30 AM
10-30-2019 11:52 AM
07-01-2021 05:11 AM
We are planning this for one of our client and i was looking for some similar experience tales. Just one question, while doing 1st publisher upgrade , the phone which are registered on subscribers remains working (like normal voice calls). or do they de-register.?
We have 4 subscribers with 5000+ ip phones (with 2 TFTP), so trying to understand the downtime w.r.t IP phones availability to users during the upgrade starting from publisher.
Upgrade guide doesn't have much clarity on this. So trying to understand downtime required for upgrades and when phones will be up and running..
Thanks in Advance ...
07-01-2021 06:19 AM
Upgrade of the publisher will not affect phone registration to subscribers.
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