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Polycom RealPresence Collaboration Server (RMX) 1500/2000/4000 Administrator’s Guide
4-14 Polycom, Inc.
•If the Content Settings selection is Hi Resolution Graphics.
— Only HD720/5 can be selected as the Cascade Resolution with 384 kbps allocated as
the conference Content Rate.
Only endpoints that connect at a Line Rate of 1024 kbps that is required to support a
Content Rate of 384 kbps will receive content in the Content channel. Endpoints that
connect to the conference at a line rate lower than 1024 kbps, will receive content in
the video channel.
•If the Content Settings selection is Live Video.
— HD720/5, HD720/30 or HD1080/15 can be selected as the Cascade Resolution with
768 kbps allocated the as the Conference Content Rate.
The higher Cascade Resolution should be selected according to the resolution
capabilities of the majority of the endpoints connecting to the conference.
Endpoints that cannot support the selected Cascade Resolution are considered Legacy
Endpoints and will receive Content in the video channel.
Selecting a Customized Content Rate in AVC Conferences
Customized Content Rate functionality can be implemented when a Conference Content Rate,
that is automatically calculated by the RMX, may not be suitable in a Cascaded Environment,
where conference line rates may vary widely between the cascaded conferences. For
example, one conference may have a line rate of 4 Mbps, and the other a line rate of is
512kbps.
Guidelines:
• Cascaded conferences may have different Conference Line Rates.
•The Customized Content Rate must be the same for all cascaded conferences.