[This is pre-release documentation and subject to change in future releases. This topic's current status is: Milestone-Ready]

Topic Last Modified: 2010-07-01

Call admission control (CAC) is a solution that determines whether or not a real-time session can be established based on the available bandwidth to help prevent poor quality of experience for users on congested networks. CAC controls real-time traffic only for audio and video, and does not affect data traffic. CAC may route the call through an Internet path when the default WAN path does not have the required bandwidth. For more information, see “Call Admission Control” in the Planning documentation.

This section provides a set of example procedures that illustrate how to deploy and manage CAC in your network.

Before you begin CAC deployment you must gather all of the required information for your enterprise network topology, as described in “Example: Gathering the Required Information for Call Admission Control” in the Planning documentation.
All CAC deployment and management examples in this section are performed by using the Communications Server Management Shell. As an alternative, you can also use the Network Configuration section of Communications Server Control Panel to manage CAC.

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