Flags Controlling Cascade Layouts - Polycom RMX 1500 Administrator's Manual

— 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.

Flags controlling Cascade Layouts

• Setting the FORCE_1X1_LAYOUT_ON_CASCADED_LINK
_CONNECTION System Flag to YES (default) automatically forces
the cascading link to Full Screen (1x1) in CP conferences, hence
displaying the speaker of one conference to a full window in the
video layout of the other conference.
Set this flag to NO when cascading between an RMX and an MGC
that is functioning as a Gateway, if the participant layouts on the
MGC are not to be forced to 1X1.
• Setting the AVOID_VIDEO_LOOP_BACK_IN_CASCADE System
Flag to YES (default) prevents the speaker's image from being sent
back through the participant link from the cascaded conference. This
can occur in cascaded conferences with conference layouts other than
1x1. It results in the speaker's own video image being displayed in
the speaker's video layout.
Guidelines
This option is supported with:
— With MPM+ and MPMx cards.
— In H.323, SIP and ISDN environments.
— For Basic Cascading of Continuous Presence, Video Switched and
Event Mode conferences. If a Master MCU has two slave MCUs,
participants connected to the slave MCUs will not receive video
from each other.
— Video resolution will be according to the Resolution Configuration,
VSW Setting, or Event Mode profile.
For more details on defining system flags, see "Modifying System Flags" on
page 19-6.
Polycom RMX 1500/2000/4000 Administrator's Guide
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