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RealPresence Collaboration Server (RMX) 1500/1800/2000/4000 Administrator’s Guide
Polycom®, Inc. 136
The Maximum CP Resolution of the Collaboration Server can be set to one of the following resolutions:
● HD 1080p60
● HD 1080p30
● HD 720p30
● SD 30
● CIF 30
Minimum Frame Rate Threshold for SD Resolution
The MINIMUM_FRAME_RATE_THRESHOLD_FOR_SD System Flag can be added and set to prevent low
quality, low frame rate video from being sent to endpoints by ensuring that an SD channel is not opened at
frame rates below the specified value. For more information see Modifying System Flags.
Limiting The Maximum Negotiated Bit Rate for SD and Lower
Resolutions
For systems containing MPM Rx cards, the LIMIT_SD_AND_CIF_BW_MPMRX System Flag, when added
to system.cfg and set to YES (default), limits the maximum negotiated and opened bit rate for resolutions
equal or lower than SD to 1Mbps. When set to NO no limitation is applicable to SD and CIF bit rates.
Additional Video Resolutions in MPMx Card
Configuration Mode
The following higher video quality resolutions are available with when the Collaboration Server is working
in MPMx Mode:
• CIF
352 x 288 pixels
at 50 fps.
• WCIF 512 x 288 pixels at 50 fps
• WSD 848 x 480 pixels at 50 fps
• W4CIF 1024 x 576 pixels at 30 fps
• 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)
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 Collaboration
Server’s Card Configuration Mode (MPMx or MPMRx).