Cisco Cisco TelePresence Video Communication Server Expressway
Enabling endpoints registered on the video network to call Lync clients registered on Lync Server
Cisco VCS Deployment Guide: Microsoft Lync 2010 and Cisco VCS X6.1
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Ensure that default links between the “Lync gateway” Cisco VCS
Control’s zones are set up
Control’s zones are set up
For a call to succeed there must be appropriate links between Zones, links must exist from:
Default Subzone to Traversal Subzone
Default Subzone to Default Zone
Default Subzone to Cluster Subzone (this is required even if Cisco VCS is not part of a cluster)
Traversal Subzone to Default Zone
Check these on the Links page (VCS configuration > Bandwidth > Links):
If any links are missing, log onto the command line interface and run the command:
xcommand DefaultLinksAdd
Configure DNS details
Configure the DNS Server details
The “Lync gateway” Cisco VCS(s) should be configured to use the same DNS servers as Lync Server.
On the machine running Lync Server:
1. From the Windows Start menu choose Run.
2. Type cmd into the Open field and click OK. A command window opens.
3. In the cmd.exe window type:
ipconfig /all
4. Note down the DNS servers.
Note: If the DNS server IP address is 127.0.0.1 that means that Lync Server is using a DNS server
on its own hardware. Instead of entering 127.0.0.1 on the Cisco VCS, use the IP address of the Lync
Server platform instead.
on its own hardware. Instead of entering 127.0.0.1 on the Cisco VCS, use the IP address of the Lync
Server platform instead.
On each “Lync gateway” Cisco VCS Control peer:
1. Go to the DNS page (System > DNS).
2. Set DNS server Address 1 to the IP address of DNS server noted earlier.
3. If Lync Server has more than one DNS server defined, configure the remaining fields as follows:
DNS Server Address 2
IP address of DNS server 2 (if there is a second DNS server)
DNS Server Address 3
IP address of DNS server 3 (if there is a third DNS server)
DNS Server Address 4
IP address of DNS server 4 (if there is a fourth DNS server)
DNS Server Address 5
IP address of DNS server 5 (if there is a fifth DNS server)
4. Click Save.