I have a client that is on CUOM (version 2.3) and CUPM (Version 2.1). They want to upgrade to version 8.6 for both. I read from the Cisco docs on CUPM that no license upgrade is needed and as such the existing licenses will still be valid. However, I could not find this information for CUOM.
Do we need upgrade license for CUOM or will the current license still be valid when we perform the upgrade on the same machine. If upgrade license is required, does anyone know what is the part number for ordering?