Topic Last Modified: 2010-12-13

Call admission control (CAC) is a network of regions, sites, and subnets that enable you to place restrictions on audio and video transmissions based on available bandwidth. After you configure the network for CAC, you must enable CAC in order for the bandwidth limitations to be enforced.

You can also use Lync Server Control Panel and Lync Server Management Shell cmdlets to enable CAC.

In the Call Admission Control Setting section of the Edit Properties dialog box for your site, you can change the following settings: