RealPresence Collaboration Server (RMX) 1500/1800/2000/4000 Administrator’s Guide
Polycom®, Inc. 677
AVC Conferencing - Video Switching Resource Capacity (Collaboration Server
1500/2000/4000 Only)
During a Video Switching conference, each endpoint uses one video (CIF) port.
The following table summarizes the resource capacities of fully configured MCUs with the various card types
per line rate in VSW Conferencing mode.
Resource Usage in AVC CP Conferencing
Video resources usage varies according to the video resolution used by the endpoints. The higher the video
resolution (quality), the greater the amount of video resources consumed by the MCU. Table 5-5 shows the
number of video resources used for each resolution.
MPMRx
mixed CP and
SVC
N/A 3 1.5 0.75 0.75 0.75 0.3333
MPMx mixed
CP and SVC
N/A 3 1.5 0.75 0.75
Resource Capacity Allocation per Line Rate in VSW Conferencing Mode
Resource Type
Maximum Possible Resources (CIF Video Resources)
RMX 1500 RMX 2000 RMX 4000
MPMx MPMx MPMRx MPMx MPMRx
Voice (IP) 360 720 260 1440 520
Voice (PSTN) 120 400 260 400 400
VSW 2Mb 80 160 130 320 260
VSW 4Mb 40 80 130 160 260
VSW 6Mb 20 40 120 80 240
ISDN 7 E1 or 9 T1 (per RTM ISDN card)
MCUs with 500MB of memory can support a maximum of 400 simultaneous participant calls,
regardless of how system resources are allocated.
MCUs with 1000MB of memory are not subject to this limitation.
MCU memory size is listed in the Administration > System Information properties box. For more
information see System Information .