Not a web meeting, just a call to call with video. Let's say a yealink T58V to a tablet running the 3cx client or App to App. I'm trying to determine if the app can be used to help troubleshoot equipment.
The 3CX mobile app can only do audio hence you can't use it in this case, so you would need to use the desktop app if you want to make calls to videophones for troubleshooting.
This is limited to the codecs that the desktop client supports of course, so the videophone would need to have a common codec at least with the client: