Actually, the Cisco 7936 does not take a 48V adapter. The correct adapter for the CP-7936 is a 19V, the Cisco CP-PWR-CUBE will not work with the PIM for the 7936 Conference phone. ADP-19FB is the Cisco Part# for the 19V power supply that goes along with the power kit for the 7936.
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.