compatibility between CUCM and IM&P

[ciaodarwin]

We have a CUCM cluster with 3 Nodes (Version: 10.5.1) and a IM&P cluster with 2 Nodes (Version: 10.5.1).

I want to upgrade only the IM&P server to the newest version 11.5.1 to use the new Features.

Is it possible to have the CUCM cluster running with the version 10.5.1 and the IM&P cluster running with the version 11.5.1?

[Adam Miles · Accepted solution]

IM&P is effectively part of the CUCM cluster now, so the major and minor version has to match.

If you want IM&P to be on 11.5.1 CUCM also needs to be upgraded to 11.5.x

Adam