How are Cisco Unified CallManager location parameters used?

A.
Assign directory numbers to devices as they connect to the IP telephony network.

B.
Specify the bandwidth used for audio and video calls.

C.
Implement call admission control in a centralized call processing deployment.

D.
Provide alternate call routing when the primary call path is unavailable.

Explanation:

The locations feature provides call admission control for centralized call-processing systems. Locations settings allow you to specify the maximum amount of audio and video bandwidth that is available for calls to and from each location, which thereby limits the number of active calls and limits oversubscription of the bandwidth on the IP WAN links.