Cisco Cisco TelePresence Video Communication Server Expressway
Appendix 3: Additional information
Reaching Cisco AM GW capacity
If the call capacity of the Cisco AM GWs is reached, new calls to and from Lync will be routed directly
between VCS and Lync.
between VCS and Lync.
The calls will succeed, but the image resolution will be limited to CIF in both directions, from Lync client to
video endpoint and from video endpoint to Lync client, whatever the image size selected on Lync client.
video endpoint and from video endpoint to Lync client, whatever the image size selected on Lync client.
Bandwidth control
Bandwidth can be controlled using pipes over links to the “To Microsoft Lync Server via B2BUA” neighbor
zone.
zone.
Call license usage
Call type
Traversal call licenses
Non-traversal call licenses
SIP to Lync call via Cisco AM GW
0
1
H.323 to Lync call via Cisco AM GW
1
0
SIP to Lync direct from VCS
0
1
H.323 to Lync direct from VCS
1
0
Endpoint specific configuration
for general settings for use of video endpoints with VCS and Lync.
Communicator for MAC
Low power MAC machines may experience high resource consumption when handling calls with video
endpoints. Cisco AM GW has a configuration to limit video communications from Communicator for MAC to
VGA to avoid this excessive resource usage.
endpoints. Cisco AM GW has a configuration to limit video communications from Communicator for MAC to
VGA to avoid this excessive resource usage.
To limit Communicator for MAC calls to only use VGA:
1. Go to
Settings > System Settings
.
2. Ensure that Limit transmitted video from Communicator for MAC clients to VGA is selected.
3. Click Apply changes.
Note that this will affect the video quality of calls with all Communicators for MAC.
Cisco TelePresence Microsoft Lync 2010, Cisco VCS and Cisco AM GW Deployment Guide (X8.5)
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Appendix 3: Additional information