Upgrade Order 9.x to 10.5

[Jeff Venier]

We're currently running the below UC applications and I'm trying to determine the best order for migration:

CUCM 9.1.2

CUC 9.1.2

CUAC Enterprise 9.1.1 

Does the Attendant Console have to be migrated first? Is anyone running the CUAC 9.x in a 10.x environment? If possible we would like to hold off on upgrading that component until later, but not sure if it's possible.

[Jaime Valencia · Accepted solution]

Yes, no AC on 9.x is compatible with 10.x CUCM, but 10.X ACs are compatible with 9.x CUCM.

It would be AC -> CUCM -> CUC

[Jeff Venier]

Thank you Jaime, that's what I figured, but was hoping I could do it last. Also, just to confirm, the CUCM and CUC can be done in either order, correct?

[Jaime Valencia · Accepted solution]

CUC is pretty much a wildcard, you can upgrade it at anytime and still keep CUCM compatibility.

[Jeff Venier]

Thanks again..