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RealPresence Collaboration Server (RMX) 1500/2000/4000 Administrator’s Guide
5-6 Polycom, Inc.
Network Topologies Enabling H.239 Content Over ISDN Cascaded
Links
ISDN Cascaded links that support H.239 Content can be created between two gateways,
gateway-to-MCU or between two MCUs in the following network topologies:
• Gateway to Gateway
Figure 5-3 Gateway to Gateway Topology
In this topology, an IP participant calls another IP participant over an ISDN link
between two gateways.
• Gateway to MCU
Figure 5-4 Gateway to MCU/ MCU to Gateway Topology
In this topology, an IP participant calls a conference running on an MCU via a gateway
and over an ISDN link.
• MCU to MCU
Figure 5-5 Cascading Between Two MCUs Using an ISDN Link
In this topology, an ISDN participant from conference running on MCU A calls a
conference running on MCU B over an ISDN link.
RMX Gateway B
RMX Gateway A
RMX Gateway A RMX MCU B