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Audiographic systems add to the audio channel different forms of
low-bandwidth graphics, such as text, diagrams, telewriting, or pictures. The
level, quality, and flexibility of the visual support vary widely from one
system to another, depending on the communication bandwidth and on the
sophistication of the tutor's and learners' stations, software, and peripherals.
Some systems allow users to annotate a computer display screen or electronic
whiteboard with a keyboard or graphics pen and then to transmit the annotations
to the screens at the remote sites. More complex computer-based systems allow
collaboration, with participants at each site working together to develop a file
or document held on the system server.
More on audiographic conferencing
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