2.1 Background

An NSF computer networking grant was used to purchase video conferencing systems for the AOC, Charlottesville, Green Bank and Tucson conference rooms, and a multi-conferencing unit (hub) and ISDN Gateway were installed in Charlottesville. These systems allow compressed digital video and audio signals to be exchanged between the four NRAO sites over the frame-relay Intranet, and video communication with non-NRAO sites over ISDN phone lines or the Internet. Our original goals were:

• to add video capability to inter-site meetings previously held by telephone in the main conference rooms;

• to explore the use of video to cover auditorium presentations such as colloquia and workshops;

• to explore the use of video conferencing with non-NRAO sites;

Regular use of the video conferencing systems began in March 2000.

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