The example using ICMP rather than TCP but it is pretty simple to change.
I guess the difficult bit is working out which TCP port to track. Looking at the UCCX Port Utilisation Guide I would try TCP 38983 (LDAP Server) as this seems to be what CAD uses and that obviously detects failures and switches to the backup server.
I have not tried any of this yet but the theory seems logical!
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.