Please feel free to read though this informative document for a brief explication of H.323 videoconferencing.
ECU Videoconferencing Test Camera - If you need to test your H.323 video conferencing device, place a call to 220.127.116.11. If you are able to see the Pirate and the clock your videoconferencing device is working properly.
This is a great site for all kinds of information about videoconferencing, what it is, how it works, etc., and it also has a wonderful listing of content providers, their contact information and websites. Look under "Videoconferencing Adventures."
This site has video clips of actual educational videoconferences from various providers.
Commercial site of the manufacturer of videoconferencing units.
Commercial site of the manufacturer of videoconferencing units. Has a good link to educational uses of the unit.
Great site sponsored by MCI Worldcom. This is a portal for teachers with terrific, juried websites suitable for students. Teachers can obtain lesson plans for all grade levels and all subject areas.