Polycom 1500 Administrator's Manual page 188

RealPresence Collaboration Server (RMX) 1500/1800/2000/4000 Administrator's Guide
The Content Rate is dependent on the MCU type (Realpresence Collaboration Server with MPMRx or
Realpresence Collaboration Server 1800) and can be up to 66% of the conference line rate. In MCUs with
MPMRx cards the Content Rate is limited to 2048 kbps, while when used with the Realpresence
Collaboration Server 1800 the Content Rate is limited to 4096 kbps.
The following tables summarize the interaction of these parameters for Base Profile and High Profile
settings.
For more information see H.264 Base Profile and High Profile Comparison.
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