Cascading Conferences
Polycom, Inc. 81
Master-Slave Star Cascading Topology
● When creating a cascading link between two Collaboration Servers:
The Collaboration Servers operate in CP (Continuous Presence) mode.
● When creating a cascading link between MGCs and Collaboration Servers:
The MGCs can only operate in VSW mode.
The following table summarizes Video Session Modes line rate options that need to be selected for each
conference in the cascading hierarchy according to the cascading topology:
To establish the links between two Collaboration Servers requires the following procedures be performed:
● Establish the Master-Slave relationships between the cascaded conferences by defining the dialing
direction.
● Create the Master and Slave conferences, defining the appropriate line rate.
MIH Cascading – Video Session Mode and Line Rate
Topology MCU Type Video Session Mode Line Rate Endpoint
Level 1 Collaboration Server CP - HD 1.5Mb/s, 1Mb/s, 2Mb/s HDX
Level 2 Collaboration Server
Level 1 Collaboration Server CP - CIF 768Kb/s, 2Mb/s VSX
Level 2 Collaboration Server
Level 1 MGC CP - CIF 263 768Kb/s, 2Mb/s HDX, VSX
Level 2 Collaboration Server CP - CIF 264
Level 1 MGC VSW - HD 1.5Mb/s HDX
Level 2 Collaboration Server VSW - HD
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