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Chapter 4-Additional Conferencing Information
Polycom, Inc. 4-63
— If the main link is disconnected all sub-links are disconnected and deleted.
Reconnecting the main link reconnects all sub-links.
— If a sub-link is disconnected it remains disconnected until it is manually
reconnected.
— The number of Multiple Cascade Links cannot be modified while any of the links are
in a disconnected state. All previous links must be deleted before modification is
possible.
For more information see "Monitoring Multiple Cascade Links” on page 1-1.
• A Link Participant can be dragged from the address book into a conference.
— If it is the first Link Participant in the conference, the number of Multiple Cascade
Links defined for the participant are created and connected.
— If it is not the first Link Participant in the conference, the number of Multiple Cascade
Links defined for the participant is ignored.
• If there are insufficient resources to connect all Multiple Cascade Links in either of the
RMXs, none of the links are connected and resources deficiency -0 is listed as the Call
Disconnection Cause. For more information see "Monitoring Multiple Cascade Links” on
page 1-1.
• Multiple Cascade Links that are not used by MLA are inactive but continue to consume
resources.
• All RMXs participating in the cascade must have the same Telepresence Mode definitions,
either all defined as CP or all defined as Room Switch.
• When Multiple Cascade Links are defined in the Conference Profile, the Layout Type field of
the Link Participant’s Participant Properties - Media Sources dialog box is set to Conference
and cannot be modified.
• TIP Telepresence Rooms (CTS) are supported without Content. For more information
see "Collaboration With Cisco’s Telepresence Interoperability Protocol (TIP)” on page I-1.
Enabling and Using Multiple Cascade Links
The settings required to enable Multiple Cascade Links on the RMX are minimal and are
described in "Creating a Link Participant” on page 4-66.
Most of the layout configuration is performed using Polycom’s Multipoint Layout Application
(MLA).
Figure 4-3 and Figure 4-4 show example layouts and media flows when MLA is configured
for a cascading conference between two RMXs.
In Figure 4-3:
• The OTX Room System connects to RMX A.
• The RPX Room System connects to RMX B.
• This layout requires that the Telepresence Layout Mode to be set to Room Switch in the
Conference Profiles of the Cascading Conferences in each RMX.
• The current speaker is a participant in the RPX ITP Room.