UC500 can be integrated with a UCCX server without any issue as long as the IOS version is compatible with the current UCCX. Is important to note that not all the features that UCCX has are available for this kind of integrations, also the maximum number of agents that you can have is 50 with UCCX 7 is I don't mistake.
You can find the configuration steps under the following guide in chapter 5
These are the paths to get to each CCX logs through CLI. They may be helpful if you are having issues accessing RTMT or downloading logs through it.
If you want to download them you have to prefix "file get " and you can add one of the options (re...