The standard on Windows for programatic integrations is TAPI. Cisco provides a TSP that installs on Windows and acts a TAPI provider for any program that supports the interface. You can download the TSP from CUCM Admin under Applications > Plugins; however, be advised that this will need to be updated every time you patch CUCM as they are version-locked together.
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.