Polycom RealPresence 2000, Administrator'S Manual

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Chapter 4-Additional Conferencing Information
Polycom, Inc.
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— 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 4-68 .
• 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 the RealPresence Collaboration Server (RMX) 1500/2000/4000 Administrator’s Guide,
"Collaboration With Cisco’s Telepresence Interoperability Protocol (TIP)” on page 1-1 .
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.