Polycom DOC2702A User Manual

Polycom RealPresence Collaboration Server (RMX) 1500/2000/4000 Administrator’s Guide 

Polycom, Inc.

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” on page

Setting minimum bit rate thresholds that are lower than the default may affect the video 

quality of endpoints that do not support the H.264 High Profile.
Endpoints that do not support H.264 High Profile will connect according to the minimum 

bitrate thresholds defined by the following System Flags:
•

H264_BASE_PROFILE_MIN_RATE_SD30_SHARPNESS

•

H264_BASE_PROFILE_MIN_RATE_HD720P30_SHARPNESS

•

H264_BASE_PROFILE_MIN_RATE_HD1080P30_SHARPNESS

•

H264_BASE_PROFILE_MIN_RATE_CIF60_MOTION

•

H264_BASE_PROFILE_MIN_RATE_SD60_MOTION

•

H264_BASE_PROFILE_MIN_RATE_HD720P60_MOTION

These System Flags must be added to the System Configuration file before they can be 

modified. For more information see the "Modifying System Flags” on page

.

Example: If the High Profile Optimized option is selected in the Resolution Configuration dialog 

box and the System Flag values are set as in the following table:

The flags listed below are used in version 7.0.1 only. From Version 7.0.2 these flags were replaced 
with the High Profile sliders in the Resolution Configuration dialog box. For more information, see 
"Controlling Resource Allocations for Lync Clients Using RTV Video Protocol” on page

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