Cisco Cisco WebEx Meeting Center WBS30 白書
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Collaboration Meeting Room Bandwidth Requirements
The bandwidth requirement for Cisco Collaboration Meeting Rooms (CMR) is different from the standalone,
traditional WebEx video or the new HQ video-featured WebEx site. One Mbps send/receive is a minimum
requirement per single meeting. A single meeting may contain more than one Cisco TelePresence system, but this
scenario does not increase the bandwidth usage for that meeting. Multiply the minimum 1 Mbps by the number of
expected simultaneous meetings.
Presentation video (desktop sharing) uses approximately 400 kbps with 500 kbps maximum.
The maximum download needed for Common Interchange Format (CIF) video is variable, with the encoder rate
limited to a maximum of 500 kbps between the Cisco TelePresence Management Suite and Cisco TelePresence
Gateway and the receiving WebEx client.
Table 11 gives the WebEx client average bandwidth used with Cisco WebEx and CMR integration.
Table 12 outlines the bandwidth requirements for the WebEx client in CMRs.
Table 11.
WebEx Client Average Bandwidth Used with Cisco WebEx and CMR Integration
Bandwidth and CPU power: Recommendation
for good video quality and integration of the
Cisco CMR network with Cisco WebEx
for good video quality and integration of the
Cisco CMR network with Cisco WebEx
Network bandwidth should be at least 1 Mbps upstream between the infrastructure and
WebEx CMR Gateway per call. For example, if you are anticipating five simultaneous
Cisco WebEx calls you will need to have five 1-Mbps bandwidth instances.
Suggested CPU power (depends on running applications) is dual core CPU, 2.5-GHz
memory running at least 2 Gbps.
memory running at least 2 Gbps.
Cisco WebEx client resource requirements:
Expected resource allocation per meeting
Expected resource allocation per meeting
Users must have at least 850k of available resources per meeting to uplink to Cisco WebEx:
● CIF video: 300k down only
● Presentation video: 450,000 up and down (depending on whether the client is performing
● Presentation video: 450,000 up and down (depending on whether the client is performing
or receiving a presentation)
● Cisco WebEx video: 400,000 up; 400,000 x N down, where N is the number of streams
the user chooses to view
● Cisco WebEx VoIP: Up and down (70,000~150,000) bps
● Signaling: 100,000
● Signaling: 100,000
Table 12.
Bandwidth Requirements for WebEx Client in CMR
Main Video as Seen by
WebEx Client
WebEx Client
Data Sharing as Seen by
WebEx Client
WebEx Client
Bitrate per WebEx Client
Notes
HD/720p
1080p
*
(with conductor,
CMR-Hybrid only)
~3.0 Mbps
CMR-Hybrid only. Conductor required.
Source of presentation must be
1080p(16:9)
Source of presentation must be
1080p(16:9)
HD/720p
720p
~2.5 Mbps
Source of presentation must be
sharing at least 720p(16:9), highest
level for CMR-Cloud
sharing at least 720p(16:9), highest
level for CMR-Cloud
HD/720p
XGA
~2.0 Mbps
360p
XGA
~1.5 Mbps
180p
XGA
~1.2 Mbps
Lowest level for the WebEx Client to
receive main video
receive main video
None
XGA
~0.5 Mbps
Dropped from main video channel (will
retest to re-enter)
retest to re-enter)
*
Desktop WebEx Client scale (PC and Mac)