Defining AVC-Based Conference Profiles

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H.264 High Profile Support in Video Switching Conferences

Beginning with Version 7.6, the H.264 High Profile video protocol is supported in Video Switching (VSW) conferences.

Guidelines

H.264 High Profile is supported in VSW conferences in H.323 and SIP networking environments only

For H.264 High Profile-enabled VSW conferences, all endpoints connecting to the conference must support High Profile and connect to the VSW conference at the exact line rate and exact resolution defined for the conference. Endpoints that do not meet these requirements are connected as Secondary (audio only).

For H.264 Base Profile VSW conferences, both High Profile and Base Profile supporting endpoints connect using the H.264 Base Profile.

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 line rate threshold for the various resolutions available for High Profile-enabled VSW conferences.

These system flags must be manually added to the Setup menu > System Configuration before you can update their values. For more information see the Modifying System Flags.

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_HD_720p30_HP_THRESHOLD_BITRATE

512

 

 

VSW_HD_720p50_60_HP_THRESHOLD_BITRATE

832

 

 

VSW_HD_1080p_HP_THRESHOLD_BITRATE

1024

 

 

VSW_HD_1080p60_HP_THRESHOLD_BITRATE

1024

 

 

VSW_HD_1080p60_BL_THRESHOLD_BITRATE

1728

 

 

Polycom®, Inc.

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Polycom 1500/1800/2000/4000 High Profile Support in Video Switching Conferences, Minimum Threshold Line Rate System Flags