[cisco-voip] CUCM 10.5 cluster migration

[Mike O]

Hi All, I need to move about a 100 phones to a new cluster, and then add an additional 200+ phones. My problem is I want to use the "Prepare Cluster for Rollback to pre-8.0" parameter, but I can't change the option 150 in the DHCP server until the next day. My question is once I set this parameter  and I reset the phones they will register with an empty ITL file, but will the phones still function? If I can reset the phones to clear the existing ITL and have them work the following day I can then change the option 150 to the new cluster and then reset the existing phones and add new phones in.  I know I can lab this up, but wanted to make sure there were no gotchas associated with this method.


Thanks,

Mike

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