Polycom (RMX) 1500 User Manual

Page of 1183
RealPresence Collaboration Server (RMX) 1500/1800/2000/4000 Administrator’s Guide 
Polycom®, Inc. 
149
To change the System Flag default value, the flag must be manually added to the System Configuration. 
For more information see 
Example
The following table summarizes an example of two participants trying to connect to a conference running at 
a Line Rate of 1024Kbps. The Content Setting for the conference is Hi Resolution Graphics and the 
H264_HD_HIGHRES_MIN_CONTENT_RATE System Flag setting are used to determine if Content will be 
shared with the participant. 
H.264 Cascade and SVC Optimized
The H.264 Cascade and SVC Optimized option maintains content quality and minimizes the amount of 
content refreshes that occur in large cascading conferences when participants connect or disconnect from 
the conference. uses fixed resolution and frame rate for SVC Only and mixed CP and SVC conferences. In 
AVC CP conferences, each content Line Rate and Content Setting has its own resolution and frame rate.
In AVC CP conferences - Endpoints that do not support the required content parameters (Content line rate, 
H.264 protocol and Content Resolution), along with ISDN endpoints, can be connected as Legacy 
Endpoints and receive content through their video channel. This ensures that Content settings are not 
changed following the participants connection or disconnection from the conference. If the Send Content 
to Legacy Endpoints
 option is disabled, these endpoints will not receive content.
In SVC Only conferences - Endpoints that do not support the required content parameters (Content line 
rate and Content Resolution) cannot share content.
Endpoints that do not support the required content parameters (Content line rate and Content Resolution) 
cannot share content.
Participant Content Sharing Based on Connection Line Rate and System Flag Setting
Participant
Conference
Flag 
Value
Result
Line Rate
Bit Rate 
Allocation 
to Content 
Channel
Line Rate
Bit Rate 
Allocation 
to Content 
Channel
Participant 1
384
192
1024
384
128
Participant and entire 
conference share content 
at 192Kbps
512
Participant receives 
content in the video 
channel (Legacy)
Participant 2
1024
384
128
Participant and entire 
conference share content 
at 384Kbps
512
Participant and entire 
conference share content 
at 384Kbps