I am planning on changing the extension numbering plan for a CUCM 8.6 cluster from 4 digits to 6 digits but I am not sure what is the best way is to automate the task.
Does anyone know any third party tools to simplify this?
How many extension you have? Changing manually is the best procedure I believe.
Manual isnt an option unfortunately. I have over 4000 extension, the business is expecting to grow beyond 10000 users within 2 years.
0 for outside line
5 is reserved
9 is reserved internal use
1,2,3,4,6,7,8 for internal extensions
We did this for a customer. It was a manual process but we did it as part of a migration/upgrade and globalized everything to E.164+ patterns. We built some spreadsheets to update the DNs for us before the import intot he new system.
The only place people could actually dial 4 digits was internally at a site. Most people use directories to call others and by the time you're dialing 6 digits for an extension, 7-10 digits really isn't that many more (IMHO).