Polycom RMX 1500 Administrator's Manual page 183

The cascading hierarchy topology can extend to four levels (Figure 3-3)
and should be deployed according to the following guidelines:
• If an RMX is deployed on level 1:
— RMX systems can be used on level 2
— MGC with version 9.0.4 can be used on level 2 if RMX version
7.0.2 and higher is deployed in level 1
• If an MGC is deployed on level 1:
— MGC or RMX can be used on level 2.
Figure 3-1 Master-Slave Star Cascading Topology
• When creating a cascading link between two RMXs:
— The RMXs operate in CP (Continuous Presence) mode.
• When creating a cascading link between MGCs and RMXs:
— The MGCs can only operate in VSW mode.
Chapter 3-Cascading Conferences
3-19