We have a customer want to convert their 4 digit extension to 7 digit extensions. Since I cannot do that online while the servers are in production we are planning to rebuild the PUBLISHER (First Node) on a new server OFFLINE for couple of weeks change all the numbers and replace the existing publisher.
I was checking the Cisco doc's looks like I have to reinstall all the subscribers too when I replace the PUB. Is that true? Is there any other way we can do this so I don't have to reinstall all the SUB's again.
CM version is 6.1.3
Single Cluster - One PUB and 5 Subscribers spread across different locations.
Thanks for your help.