We trailed some StarLeaf endpoints recently (from the ex Codian team) that essentially offer a cloud with hardware service. I know this is not Cisco kit, but they have video messaging built in, however, t can actually be slightly annoying especially if you have scheduled dial out calls and room based systems - ideally I can't see the need for video messaging for room systems. Still I would be surprised if CUCM didn't offer this feature.
The TCS does not allow for voicemail features at this time. I have not looked into this much to be honest, but I do not believe we have a video voicemail solution currently. You could check out this option however which shows you how to integrate your VCS/TMS with CUC so that video users can leave voicemail (audio only) to other users if they are not reachable.
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...