Currently i have a 2 7845 Cluster CUCM 7.1.5 with 1500 users and i upgrading to a new CUCM 8.6 on UCS, however as i am also changing phones and some other client realte issues i need to migrate each user at a time, in other words
I remove User 1 DN 1000 in "old" cucm to new CUCM 8.6 and create a route pattern on the "old" cucm to point to the sip trunk to my new CUCM for hat user.
Is there some king of protocol (like eigrp) so both CUCM are aware of their DN and not creating router patterns for each user?
I'm not able to access my old voice mail messages all of a sudden. The recording says something like 'the message is currently not available'. This has never happened before in all the years I have been using this system. I have t...