Cisco Cisco TelePresence Video Communication Server Expressway
Enable Calls from External Lync Clients
Command or Action
Purpose
Enable the VCS Expressway to relay the media between
external Lync clients and internal endpoints
external Lync clients and internal endpoints
To tell Lync clients the addresses of the TURN servers when
they are establishing connectivity (ICE)
they are establishing connectivity (ICE)
Table 9 Configure TURN in the Cisco Collaboration network
Activate the TURN Server on the VCS Expressway
Prerequisites
■
VCS Expressway is configured as required in Cisco VCS Basic Configuration (Control with Expressway)
Deployment Guide on
Deployment Guide on
■
VCS Expressway has a TURN Relays option key
Create a Local Account for the Gateway VCS and Enable TURN Services
1.
Log in to the VCS Expressway and go to Configuration > Traversal > TURN
2.
Set TURN services to On
3.
Click Configure TURN client credentials on local database
A window pops up showing the local authentication accounts
4.
Click New
5.
Enter a Name that you can recognize as the Gateway VCS account, eg.
GatewayB2BUA
6.
Enter a Password to authenticate the Gateway VCS
7.
Click Create Credential
8.
Close the pop up window
9.
Leave the default values in place for all other configuration fields
10.
Click Save
The TURN server status section now shows the listening address, the number of active clients, and the
number of active relays.
number of active relays.
Note:
If you need to change any of the defaults on this page in future, restart the TURN server with your
changes as follows:
a.
Make your changes and set TURN services to Off
b.
Click Save and then set TURN services to On
c.
Click Save
.
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Cisco VCS and Microsoft Lync Deployment Guide