Cisco Cisco TelePresence Video Communication Server Expressway
Appendix 3 – Additional information
Cisco VCS Deployment Guide: Microsoft Lync 2010, Cisco VCS X7.2 and Cisco AM GW 1.1
Page 18 of 20
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 Cisco VCS and Lync.
between Cisco 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.
client to 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 OCS/Lync Server via B2BUA”
neighbor zone.
neighbor 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 Cisco VCS
0
1
H.323 to Lync direct from Cisco VCS
1
0
Endpoint specific configuration
Communicator for MAC
Low power MAC machines may experience high resource consumption when handling calls with video
endpoints. AMGW has a configuration to limit video communications from Communicator for MAC to
VGA to avoid this excessive resource usage.
endpoints. AMGW 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 the
Systems Settings
page (
Settings > System Settings
).
2. Configure the field as follows:
Limit transmitted video from
Communicator for MAC clients to VGA
Communicator for MAC clients to VGA
Select the tick box
3. Click Apply changes.
Note that this will affect the video quality of calls with all Communicators for MAC.