we will add one callmanager Subscriber in the callmanager cluster 4.1(3) with 3 servers total(one PUB and 2 SUBs), the base OS is 2000.2.4, and updated with 20004.2 and 20004.2sr16.
my questions is: can we starting with higher OS base version 2000.2.7 or 2000.4.2 instead of 2000.2.4? (then continue upgrading with 2000.4.2 and 2000.4.2ar16).If we can, any impact for the callmanager system?
no impact whatsoever, it's really not mandatory but common config to have all servers at the same OS level, but it doesn't matter at all which was the 1st OS you installed on the server but only the latest version/SR installed
if this helps, please rate