RMX 2000 Administrator's Guide Version 7.6.1 - Polycom

Polycom RMX 1500/2000/4000 Administrator’s Guide
MIH Cascading Guidelines
Master and Slave Conferences
• In MIH Cascading conferences, although there are multiple levels of Master and Slave
relationships between conferences, the conference that runs on the MCU on level 1 of
the hierarchy must be the Master for the entire cascading session. When an MGC is part
of the cascading topology, it must be set as Level 1 MCU, unless MGC Version 9.0.4 is
installed.
• Conferences running on MCUs on levels 2 and 3 and can be both Masters and Slaves to
conferences running on MCUs on levels above and below them.
• All conferences running on MCUs on level 4 are Slave conferences.
• When the DST MCS 4000 is on level 3 and acting as slave to level 2, the RMX on level 2
must dial out to it in order for the DST MCS 4000 to be identified as slave. The link
between the two MCU (dial out participant) is defined as a standard participant and not
as a cascading link.
Cascade Links
Conference B
Slave Conference of A
Master of Conferences D and E
Conference A Master of Conferences B and C
Conferences D & E
Slaves of Conference B
Figure 4-4 MIH Cascading – Master-Slave Relationship
Conference C
Slave Conference of A
Master of Conferences
F and G
Conferences F & G
Slaves of Conference C
Participant
Connections
Video Session Mode, Line Rate and Video Settings
The types of MCUs, their position in the cascade topology and the endpoint capabilities
(HD/CIF and H.263/H.264) determine the Video Session Mode of the MIH Cascading
conference.
• 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:
— If there are no MGCs on level 2, the MGCs can operate in either in CP or VSW
(Video Switching) mode.
— If there are MGCs on level 2, the MGCs can only operate in VSW mode.
• When creating a cascading link between two MGCs:
— The MGCs must be configured to operate in VSW mode.
For more details about the MGC to MGC connection, see the MGC Manager User’s
Guide, Volume II, Chapter 1, “Ad Hoc Auto Cascading and Cascading Links”.
• To enable the connection of the links between cascaded conferences, they must run at
the same line rate.
4-28 Polycom, Inc.