All sites view the pre-assigned broadcaster. The site viewed by the broadcaster is chosen based on a timed, rotating scan of all other sites in the conference. The automatic rotation allows the broadcaster to use visual clues to gauge audience reaction. The time interval between successive video switches can be changed on a per-conference basis. In this type of conference, the only audio source to the conference is that of the pre-assigned broadcaster.
Browse is similar, except that the browsing is noticed only by the current broadcaster.
At the conference administrator s discretion, a pre-set minimum resolution and frame rate can be established to ensure a minimum quality of service. First, the endpoint establishes itself as the broadcaster. Finally, the endpoint relinquishes control, and the conference returns to voice-activated switching. Continuous Presence Plus is the most feature rich and flexible solution in the market place. Any participant, up to a maximum of 25, in a Continuous Presence Plus conference can be seen and heard during the call at any time.