VideoTeleconferencing
Video teleconferencing is an attractive and often touted aspect of Internet connectivity. However, for most users such teleconferencing as a serious communication tool will leave much to be desired in the present environment because video teleconferencing requires high bandwidth to be effective. This is particularly true if one wants "realistic" video and audio corresponding to colored images, a large display area, and high-quality sound.
 CU-SeeMe
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NASA TV
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Public CU-SeeMe Sites
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Going Further
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Even in the present environment, useful things can be done with teleconferencing if one is willing to live with the bandwidth limitations. The increased use of broad-band technologies such as cable modems could make serious teleconferencing viable in the K-12 environment.