Polycom RMX 1500 Administrator's Manual page 96

Chapter 2-Additional Conferencing Information
2-34
H.264 Endpoints
• 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.
Content at HD1080p Resolution
• 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.
Entry Queues
• 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.
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.