Expectations for online course support, understood as of 2013/03/07, are:
Only the instructor will be involved; students will only be heard. That implies we don't need more than a single camera. Unless an automatic motion tracking camera is used, we'll assume that a TA (Teaching Assistant for the course) will do camera management.
Microphones will be required for the instructor, and the audience. The room is preferably mic'd so that students can be heard from wherever they sit.
Any combination of the instructor and "slides" should be viewable by students. At least projector and laptop output constitutes "slides".
Courses will be live and/or viewed later (typically next day); likely unedited.