CCX Upgrade question from 11.1 to 11.6.2

[KY_]

Hi Team

Our customer are using CUCM 10.5.2 and CCX 11.0.1 we want to upgrade their UC platform but
we would like to upgrade first of all CCX 11.6.2 and after that CUCM will be upgrade version 12.0 so my question is that CCX 11.6.2 is not orderable now and its looks end of sale how can they migrate ?

 because we can not upgrade CCX directly 12.0.1 can you please advice procedure and what should we have ?

Existing CCX version is 11.1 but we want to upgrade it 11.6.2 then we can able to upgrade  CUCM also 12.5.su5 for compabilities.

Thanks

[Elliot Dierksen]

Anything you do here is going to involve multiple hops. Depending on the complexity of the CUCM and CCX configs, you could build a new cluster on all current versions and flash cut to it. That would also give you a chance to do some testing of the new cluster prior to go live. It does mean new IP's, and new host names, etc.