Polycom DOC2702A User Manual

Page of 1010
Polycom RealPresence Collaboration Server (RMX) 1500/2000/4000
5-2
Polycom, Inc.
In order to avoid cluttering in the cascaded window, it is advised to select appropriate video 
layouts in each conference before cascading them.
Figure 5-1
Video Layouts in Cascaded Conferences
Guidelines
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. 
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.
Flags controlling Cascade Layouts
Setting the FORCE_1X1_LAYOUT_ON_CASCADED_LINK
_CONNECTION System Flag to YES (default) automatically forces the cascading link to 
Without 
Cascade
Conference A
Conference B
During 
Cascading
Video layout of Conf. B in 
window of Conf. A
Video layout of Conf. A in 
window of Conf. B