Whats the difference between a Polycom session and ITV?
Polycom is a brand of video conferencing equipment; it allows two-way interactive video and audio to be used. ITV uses microwave systems to deliver a video and audio signal to distant sites, but the return signal is only audio; students push a microphone button to be heard by the professor, who never sees them. ITV signals are only sent to sites equipped to pick up the microwave signal. Polycom signals (or any other Internet-protocol video conferencing system) can be delivered to anywhere in the world with a receive system.
