What do you wish you'd known earlier about setup and support for conference rooms?
There's a lot of discussion in some communities about offices redesigning meeting rooms, with the expectation that the in-person conference always will have remote participation. That means more attention to mics and camera and other audiovideo equipment -- and, I'm guessing, more emergency calls to IT (or whom?) when there are problems.
What advice would you offer a sysadmin who's new to this?