Polycom RealPresence 1500 Administrator's Manual page 291

The Conferences List panes in each of the two conferences will display a cascaded conference icon (
indicating that a conference running on the MCU is presently cascading with another conference running
on the same or another MCU. The cascaded conference icon will be displayed for a short period of time and
then disappear.
Create Dial-out Link from MGC Conference to Collaboration Server
Conference
In the same way that the dial-out cascaded link is created in the RealPresence Collaboration Server, you
can create a dial-out participant in the MGC.
In the MGC Manager application, define a new participant as follows:
1 In the Participant Properties dialog box, enter a Participant Name, select Dial-out and H.323.
2 Define the dialing string as described in step
link.
Polycom®, Inc.
6 in the procedure for defining the dial-out cascaded
Defining Cascading Conferences
)
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