Polycom (RMX) 1500 User Manual

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Polycom RealPresence Collaboration Server (RMX) 1500/2000/4000 Administrator’s Guide 
2-54
Polycom, Inc.
Endpoints that do not support High Profile, connecting to the VSW conference at 
the exact line rate and exact resolution defined for the conference are connected to 
the conference as Secondary (audio only).
For H.264 Base Profile VSW conferences:
High Profile supporting and non-High Profile supporting endpoints connect to the 
VSW conference using the H.264 Base Profile video protocol.
Endpoints that do not support the exact conference line rate are disconnected.
Endpoints that do not support the exact video settings such as protocol and 
resolution defined for the conference will be connected as Secondary (audio only).
Minimum Threshold Line Rate System Flags
The following table lists the System Flags that control the minimum threshold line rate for the 
various resolutions available for High Profile-enabled VSW conferences.
Line rate and resolution combinations are checked for validity. If the selected line rate is 
below the minimum threshold line rate required for the selected resolution, the line rate is 
automatically adjusted to the minimum threshold line rate value for the selected resolution.
The value of the SUPPORT_HIGH_PROFILE System Flag (used for CP conferences) 
has no effect on VSW conferences.
Before they can be modified, all of the System Flags mentioned above must be added to 
the system.cfg file using the RMX Menu – Setup option. For more information see 
.
Table 2-22  
System Flags - Minimum Threshold Line Rates
Flag Name
Minimum Threshold Line 
Rate (Kbps)
VSW_CIF_HP_THRESHOLD_BITRATE
64
VSW_SD_HP_THRESHOLD_BITRATE
128
VSW_HD720p30_HP_THRESHOLD_BITRATE
512
VSW_HD720p50-60_HP_THRESHOLD_BITRATE
832
VSW_HD1080p_HP_THRESHOLD_BITRATE
1024
VSW_HD1080p60_HP_THRESHOLD_BITRATE 
1024
VSW_HD_1080p60_BL_THRESHOLD_BITRATE
1728