Accepted Solutions
As @Nithin Eluvathingal wrote you need to update the number on both CM and in CUC, or whatever VM system you happen to use. That's a pretty given, did not even contemplate that this is what you refer to. Once you have updated the directory number in CM and extension on the user in your VM system you should not have a problem to access the VM account.
Another given is that you should not remove and then add a new account in voicemail system as that obviously would cause you to loose all voice mail.
Are you going to change the extension for the user in CUC? If so why would you need to create a new account and do a backup/restore?
If all you do is change of the extension you should not loose any voice mails.
Would you mind to outline how you did this change, be as detailed as you can please?
I still do not understand why you would need to remove the VM box to change the extension. We just did the very same thing for about 15K+ users and we did not remove a single account.
Just to be clear this is the setting you refer to right?
Now I’m afraid that you lost me totally. The screen shot I provided shows the extension of a users voice mail account.
What do you mean by “That means we need to change only IPT extn but the VM extn should remain the same”? This doesn’t make any sense to me. Would you be so kind to elaborate. Please explain it as I’m five years old, aka be as specific as possible. If you can please use screenshots of what you are referring to as that would be o so much easier to understand.
As @Nithin Eluvathingal wrote you need to update the number on both CM and in CUC, or whatever VM system you happen to use. That's a pretty given, did not even contemplate that this is what you refer to. Once you have updated the directory number in CM and extension on the user in your VM system you should not have a problem to access the VM account.
Another given is that you should not remove and then add a new account in voicemail system as that obviously would cause you to loose all voice mail.
asper my knowledge if you are changing the user from TOM to JERRY, then TOM cannot access his VM. But in your case you are not changing the user.
what Voicemail platform are you using?
what I understood is u r changing the extensions numbers of users as there is a change in DID.
when u change the extension u need to update the extension on unity. But if the users remains same and if ur not deleting the user, as per my knowledge old voicemail will not get affected.
