Cascading Conferences - H.239-Enabled Mih Topology - Polycom RMX 1500 Administrator's Manual

Chapter 3-Cascading Conferences
Cascading Conferences - H.239-enabled MIH
Topology
MIH Cascading Levels
3-36
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.
• Utilizing the connection abilities of different MCUs, for example,
different communication protocols, such as, serial connections, ISDN,
etc.
• Significant call cost savings to be realized by having participants call
local MCUs which in turn call remote MCUs, long distance.
Although participants in MIH Cascading conferences can connect using H.323,
SIP and ISDN, the MIH Cascading Links must connect via H.323.
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:
— Any RMX can be used on level 2, MGC version 9.0.4 can be used
on level 2 and DST MCS 4000 and other MCUs can be deployed
on levels 3 and 4.
• If an MGC is deployed on level 1:
— MGC or RMX can be used on level 2, and DST MCS 4000 and
other MCUs can be deployed on levels 3 and 4.