Polycom (RMX) 1500 User Manual

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RealPresence Collaboration Server (RMX) 1500/1800/2000/4000 Administrator’s Guide 
Polycom®, Inc. 
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Guidelines for Setting the Video Layout in Cascading Conferences
To ensure that conferences can be cascaded and video can be viewed in all conferences the following 
guidelines are recommended:
● The same version installed on all MCUs participating the cascading topology
● The same license installed on all MCUs participating the cascading topology
● Same Conference Parameters are defined in the Profile of the conferences participating in the 
cascading topology
Conference line rates should be identical
Content rate should be identical
Same encryption settings
● DTMF codes should be defined with the same numeric codes in the IVR services assigned to the 
cascading conferences 
● DTMF forwarding is suppressed 
● The video layout of the link is set to 1x1 by the appropriate system flag. 
● Cascaded links in 1x1 video layout are in SD resolution.
● When the Mute Participants Except Lecturer option is enabled in the Conference Profile, all 
participants (including the link participants) except the lecturer are muted. Only the lecturer is not 
muted.
● Gathering is not supported in Cascading Conferences.
Video Layouts in Cascaded Conferences
Conference A
Conference B
Without cascading
During cascading
Video layout of conference 
B within window of 
conference A
Video layout of conference 
A within window of 
conference B