Cisco Cisco TelePresence Video Communication Server Expressway
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If your VCS Expressway has one NIC enabled and is using static NAT mode, note that:
You must enter the FQDN of the VCS Expressway, as it is seen from outside the network, as the peer address
on the VCS Control's secure traversal zone. The reason for this is that in static NAT mode, the VCS
Expressway requests that incoming signaling and media traffic should be sent to its external FQDN, rather than
its private name.
on the VCS Control's secure traversal zone. The reason for this is that in static NAT mode, the VCS
Expressway requests that incoming signaling and media traffic should be sent to its external FQDN, rather than
its private name.
This also means that the external firewall must allow traffic from the VCS Control to the VCS Expressway's
external FQDN. This is known as NAT reflection, and may not be supported by all types of firewalls.
external FQDN. This is known as NAT reflection, and may not be supported by all types of firewalls.
, for more information.
Unified CM
1.
If you have multiple Unified CM clusters, you must confgure ILS (Intercluster Lookup Service) on all of the
clusters.
clusters.
This is because the VCS needs to communicate with each user's home Unified CM cluster, and to discover the
home cluster it sends a UDS (User Data Service) query to any one of the Unified CM nodes.
home cluster it sends a UDS (User Data Service) query to any one of the Unified CM nodes.
for your version.
2.
Ensure that the Maximum Session Bit Rate for Video Calls between and within regions (System > Region
Information > Region) is set to a suitable upper limit for your system, for example 6000 kbps.
Information > Region) is set to a suitable upper limit for your system, for example 6000 kbps.
for more information.
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Mobile and Remote Access Through Cisco Video Communication Server Deployment Guide
Configuration Overview