RMX 2000 Administrator's Guide Version 7.6.1 - Polycom

Polycom RMX 1500/2000/4000 Administrator’s Guide
• Video Switching uses less system resources than CP: only one CIF video resource per
participant for any resolution (including HD). Table 1-2 lists the resources available to
VSW conferences by line rate and card type.
Table 1-2 VSW Resource Capacity Line Rate
Resource Type
Maximum Possible Resources Per Card*
MPM MPM+ MPMx
VSW 2Mbps 40 80 80*
VSW 4Mbps 40 40 40*
VSW 6Mbps - 20 20*
* Capacity numbers are for maximum capacity card assemblies. These numbers may be lower
when LPR and/or encryption are enabled.
Table 1-3 lists the recommended number of connections at HD1080p resolution for fully
configured and licenced RMX systems with MPMx cards. For detailed resource
capacity information see the relevant RMX Hardware Guide.
Table 1-3 Maximum Number of HD1080p Connections by Line Rate
Line Rate/Participants RMX 1500 RMX 2000 RMX 4000
Up to 2Mbps 80 160 320
4Mbps 40 80 160
6Mbps (MPM+/MPMx) 20 40 80
• The maximum supported video conference size is 160 participants.
• The display aspect ratio is 4x3 or 16x9.
• Site (endpoint) names, skins, message overlay etc. are not supported in Video
Switching.
• Video forcing is enabled at the conference and participant levels.
• To connect to a Video Switching conference via Entry Queue, the Profile assigned to the
Entry Queue must be set to Video Switching. It is recommended to use the same profile
for both the destination conference and Entry Queue.
• The HD_THRESHOLD_BITRATE flag must be set in the System Configuration. The value
of this flag is the system minimum threshold bit rate for HD resolutions. The line rate
selected in the conference Profile must be the same as or higher than that specified by
the HD_THRESHOLD_BITRATE flag.
The HD_THRESHOLD_BIT RATE flag is responsible for negotiation only, It does not guarantee that
the endpoint will open an HD channel or transmit on an opened HD channel.
The HD_THRESHOLD_BITRATE flag line rate value ranges from 384kbps to 4Mbs,
default is 768kbps. For more information, see "System Configuration Flags” on page 21-1.
1-4 Polycom, Inc.