Polycom RMX 1500 Administrator's Manual page 76

Polycom RMX 1500/2000/4000 Administrator's Guide
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H.264 Endpoints
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Content at HD1080p Resolution
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Entry Queues
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Cascade Links
Content is shared across a Cascaded Link using H.263 irrespective of whether either or both
the cascade-enabled Entry Queue and the Cascaded Link have Up to H.264 Content sharing
defined in their profiles.
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H.263 is used for Content if that participant is the first to connect to the conference
Content sharing is stopped for all participants if the connection occurs after Content
sharing has started. When Content sharing is restarted by the user, Content is shared
using H.263.
During a H.264 Content session, changes to resolution or frame rate do not interrupt
Content transmission.
If an endpoint that does not support H.264 Content sharing disconnects from a
conference with an Up to H.264 Content Sharing Profile, the Content sharing continues
using H.263. This is true even if all the remaining connected endpoints support H.264. If
Content sharing is stopped and restarted by the user, Content sharing is automatically
upgraded to use H.264.
Endpoints that support H.264 can receive H.239 Content at the following resolutions:
— HD720pat30fps
— HD1080pat15fps
— HD720p at 5fps
The minimum required conference line rate must be 2048 kbps or higher.
All connected endpoints must support the minimum line rate required for HD1080p
and be capable of receiving HD1080p content.
The Content Protocol setting in the conference Profile must be set to Up to H.264.
The selection of either H.263 or Up to H.264 in the Entry Queue Profile does not affect
how Content is shared.
When the endpoint is moved to the conference from the Entry Queue, the endpoint
shares Content according to the guidelines set out under Endpoint Capabilities and
according to the content protocol that is defined for the target conference.
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