Polycom RealPresence 4000 Administrator's Manual page 146

Polycom® RealPresence Collaboration Server (RMX) 1500/2000/4000 Administrator's Guide
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Two higher quality, intermediate video resolutions replace the transmission of CIF (352 x
288 pixels) or SIF (352 x 240 pixels) resolutions to endpoints that have capabilities between:
The video resolution transmitted to any endpoint is determined by the endpoint's capabilities, the
conference line rate, the Conference Profile's Motion and Sharpness settings and the RMX's Card
Configuration Mode (MPM+ or MPMx).
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The frame rates (depending on the endpoint's capability) for both intermediate resolutions
are:
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In MPM+ / MPMx Mode – 50 or 60 fps.
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HD 720p 1280 x 720 pixels at 60 fps (symmetric with MPMx).
HD 1080p 1920 x 1080 pixels at 30 fps (symmetric with MPMx).
HD 1080p 1920 x 1080 pixels at 60 fps (asymmetric with MPMx).
CIF (352 x 288 pixels) and 4CIF (704 x 576 pixels) – the resolution transmitted to these
endpoints is 432 x 336 pixels.
SIF (352 x 240 pixels) and 4SIF (704 x 480 pixels) – the resolution transmitted to these
endpoints is 480 x 352 pixels.
In MPM Mode – 25 or 30 fps.
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