Chapter 5-Cascading Conferences
Polycom, Inc.
5-31
•
To enable the connection of the links between cascaded conferences, they must run at
the same line rate.
•
To enable Content sharing between the RMX and the MGC, the rate allocated to the
content must be identical in both conferences. Make sure that the line rate set for both
conferences, and the Content Settings (Graphics, Hi-res Graphics or Live video) are
selected correctly to ensure the compatible rate allocation. For more details on the RMX
rate allocation to the Content channel, see "
SIP BFCP Content Capabilities”
on page
3-2
.
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:
* When MGC is on Level 3, Content cannot be shared between Level 2 and Level 3.
Video Layout in Cascading CP Conferences
Cascade links are treated as endpoints in CP conferences and are allocated resources
according to "
Default Minimum Threshold Line Rates and Resource Usage Summary”
on
page
1-135
. Cascaded links in 1x1 video layout are in SD resolution.
When cascading two conferences, the video layout displayed in the cascaded conference is
determined by the selected layout in each of the two conferences. Each of the two
conferences will inherit the video layout of the other conference in one of their windows.
Table 5-2
MIH Cascading – Video Session Mode and Line Rate
Topology
MCU Type
Video Session Type
Line Rate
Level 1
RMX
CP - HD
1.5Mb/s, 1Mb/s, 2Mb/s
Level 2
RMX
Level 1
RMX
CP - CIF
768Kb/s, 2Mb/s
Level 2
RMX
Level 1
RMX CP
768Kb/s, 2Mb/s
Level 2
MGC CP
or
VSW
Level 1
MGC
CP - CIF 263
768 kb/s, 2Mb/s
Level 2
RMX
CP - CIF 264
Level 1
MGC
VSW - HD
1.5Mb/s
Level 2
RMX VSW
HD
Level 2
RMX
CP - HD
1.5Mb/s, 1Mb/s, 2Mb/s
Level 3
RMX
Level 2
MGC
VSW*
384 kbps, 768 kbps
Level 3
MGC
Level 2
RMX
CP/VSW -HD
1.5Mb/s, 1Mb/s, 2Mb/s
Level 3
MCS 4000
Level 2
RMX
CP - CIF
768kb/s, 2Mb/s
Level 3
MCS 4000
Содержание RealPresence 2000
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