The extra equipment needed includes a speakerphone, so that everyone may listen in, and a projector, to put the browser display onto a screen. A typical setup is shown in Figure 2. An audio amplifier may be connected to the speakerphone for large audiences. The Virtual Conference Room, for many participants. Interaction Protocol During a talk, the speaker has absolute control of the phone line.
Participants can ask questions only between slides, when the speaker pauses.
Participants should identify themselves, as well as their location, before the question. Common sense prevails in the case of many people asking questions all at once. The repartee between speaker and participant may go on until either the participant is satisfied or the speaker decides to take the question off-line. The speaker has the ultimate authority in this decision, and the participant must obey. The local chair should advertise this interaction protocol before the seminar to the audience.