Topic Last Modified: 2010-12-30
You can configure transport and authentication requirements for Microsoft Lync 2010 Phone Edition devices in a pool by setting the SIP security level for IP phones connecting to Microsoft Lync Server 2010.
To configure security settings for Lync 2010 Phone Edition
Open a browser window, and then enter the Admin URL to open the Lync Server Control Panel. For details about the different methods you can use to start Lync Server Control Panel, see Open Lync Server Administrative Tools.
In the left navigation bar, click Clients, and then click Device Configuration.
On the Device Configuration page, in the list of device configurations, double-click the configuration for which you want to change security settings.
In Edit Device Configuration, under SIP security, specify the SIP security level. The default level is High.