Thnx for a quick reply. After reading the following posts I understood that SRST does not depend on Call manager version but would give problems with phone loads in case the SRST version was lower than the CUCM version. In my case the cucm version will be older than the SRST version so I assume not to face this problem but i do not want to take chances so i will wait for more replies.
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.