Polycom RMX 1500 Administrator's Manual page 198

Polycom RMX 1500/2000/4000 Getting Started Guide
Cascading Conferences - H.239-enabled MIH
Topology
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In the Advanced tab's Node Type field, select MCU.
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Click OK.
H.239 Multi-Hierarchy (MIH) cascading is available to RMX users
enabling them to run very large conferences on different MCUs in
multiple levels of Master-Slave relationships using an H.323 connection.
Multi-Hierarchy (MIH) Cascading is implemented where the cascaded
MCUs reside on different networks, whereas Star Topology Cascading
requires that all cascaded MCUs reside on the same network.
MIH Cascading allows:
• Ability to open and use a content channel (H.239) during
conferencing.
• Full management of extremely large, distributed conferences.
• Connecting conferences on different MCUs at different sites.
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