Desktop multimedia teleconferencing involves the use of several different tools
through the same computer interface but in separate windows on the screen. These tools
might include asynchronous text conferencing (email), audioconferencing,
videoconferencing, Web resources, and the collaborative sharing of documents or
applications by participants at up to five remote sites. Such systems require highly
specified workstations with sufficient memory, power, and speed to handle multimedia
applications (along with compressed video, cameras, microphones, speakers, and digitizing
tablets) and access to wideband network capacity (ISDN at least). Current systems are
expensive and suffer interoperability problems. But the strong commercial pressures in
this market make it likely that lower-priced, reliable systems will become increasingly
available to distance educators and trainers, especially for corporate training.
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