It is quite a simple process and should be pretty painless, you simply run the new installer over the top of the current installation.
There is 3 things that pop to mind when doing this:
- Your current solution should be using an End User in CUCM for the CUEAC to CUCM connectivity, this MUST be changed to an Application User for the new version. You can find the details of the Application User settings and the roles that are required in the installation guide which comes with the software download. I would recommend you delete the End User and create an Application User with the same username and password before you start the upgrade process but obviously not whilst the old CUEAC version is still actually active and being used.
- If you have this installed in VM, you will need to get a new license once upgraded. In order to do this you can speak to Cisco TAC and request a re-host, they know the process to follow. If you do need to do this then please have your SO or the original LAC to hand, without one of these it will be difficult to find the details to reset your license activation.
- The client upgrade is manual, it does not automatically update based on the servers version. Once again though you simply run the installation over the current install.
Are you getting this error “Installer User Interface Mode Not Supported. The installer cannot run in this UI mode. To specify the interface mode, use the -i command-line option, followed by the UI mode identifier. The value UI mode identifiers...
The below trick might come handy when you have to add a new node to a cluster but you don't have or is unsure of the security password for the publisher. This procedure has been around for ages.
1) Login into the CLI of the Publisher.