How do multipoint conferences work?
There are often only two monitors in a videoconference: one for the local site and one for the other remote sites. When connecting in a multipoint conference (between more than two sites), participants need to know how the remote sites change. In a multipoint conference there is always at least one remote site that is not on-camera. The network uses audio to determine which of the remote sites is visible. When participants at a site talk, the network switches to that site. The last site to speak is the one that remains visible on the remote monitor. This process works relative to each site in the conference. For example, if an instructor is lecturing to two remote sites (sites 1 and 2), the students at those sites see the instructors site on the remote monitor. If site 1 asks a question, the instructors site and site 2 will see site 1. However, site 1 will still see the instructors site until someone at site 2 speaks. Instructors can manage which sites are visible by calling on student
