After a good read, I've found that this issue may be to do with the kind of script that I'm running. I'm running SRST on the router and I understand that the AA script for CME will not work and that I need to get a copy of the SRST script.
Also I've read that the SRST and the CME AA scripts only work on POTS dial peers and that they do not support calls from IP phones.
Can anyone confirm if this is still the case?
PS - I can confirm that the debug was "debug voice application"
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.