BUT when I press CallBack softkey button (during getting busy tone) error message " Call Back is not active. Press Exit to quit this screen." Cisco says, this error displays " If Phone A tries to press the CallBack softkey during the idle state". It is clear, BUT i got this message also while receiving busy tone, so after pressing button at right time.
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.