My network have some sites with a PBX Alcatel and others sites have a Cisco CM. they are interconnected with TDM trunks to a core PBX to form the corporate telephony network. the portions change with the time.
The videoconferencing network have their own PRI ISDN for the calls with H.320 endpoints and the IP network carries the H.323 calls.
I have found the answers to my questions into the Cisco Unified Communications Solution Reference Network Design
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.