I don't think there is an "all in one" type comparison doc available. This would be the major selling point I think (and should spur the customer on!);
Cisco Systems announces the end of life of Cisco Unity Software Version 3.1. The last day to order Cisco Unity 3.1 is October 31, 2003. Customers will continue to receive support from the Cisco Technical Assistance Center (TAC) until August 1, 2006.
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.