If we are designing a cluster with one subscriber being in a remote Location. For remote location, Local subscriber can be a primary Call Manager, and backup Call Manager could be another subscriber in data center. Is there any need to have a SRST or CME-SRST in a remote location. I don't see any real benefit. The only time SRST/CME-SRST would have any significance if both Local Subscriber and the IP WAN go down at the same 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.