2.1 Point-to-point video conferencing

Point to point video conferencing between Green Bank and Charlottesville over the frame-relay Intranet. No video hub is needed for a point to point call.

Point to point video conferencing between Socorro and the VLA Site via the dedicated T1 line. No video hub is needed for the point to point call.

Any two NRAO video conferencing systems can be connected directly across the NRAO Intranet for a high-quality, point-to-point, video conference as in the examples shown above. The systems are connected directly when one dials the other's Internet (IP) address., either by IP number or by using the video Address Book.

The video and audio signals are transmitted separately but remain synchronized with each other, with a small time delay between an event at a site and its display on the TV monitors at the other sites. Both sites can control both main cameras, so people at either end of the call can potiion either camera. The video quality in point-to-point conferences approaches that of a typical broadcast signal.

It is possible to have multiple point-to-point video conferences between any of the fourteen locations within the NRAO simultaneously, e.g. one Socorro conference room could be conferencing with the VLA Site while another Socorro room talks to Green Bank and Tucson views a colloquium in the Charlottesville Auditorium.

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