Implementing and Operating Cisco Collaboration Core Technologies (CLCOR) — Question 215

Location-based call admission control is used in Cisco UCM to control the amount of bandwidth allowed between predefined locations. What must be considered when calculating the number of calls that can be made?

Answer options

• A. A limit of 900 kb is the total amount of bandwidth used for the sum of the media and signaling in the calls. The system allows for an actual of 20% overhead of IP packet headers. This is to compare the use of ISDN lines with no IP overhead.
• B. A limit of 900 kb Is the total amount of bandwidth used for the sum of calls of the defined codec including headers and media traffic.
• C. A limit of 900 kb is the total amount of bandwidth used for the sum of calls. The use of compression does not impact the amount of calls because only the codec definition is considered when calculating the CAC in Cisco UCM.
• D. A limit of 900 kb is the total amount of actual used RTP traffic so the oversubscription can be done for multiple calls adding Its maximum RTP stream requirements.

Correct answer: B

Explanation

Option B is correct because it accurately states that the 900 kb limit encompasses the total bandwidth used for the aggregate of calls, including codec and header data. Option A incorrectly emphasizes signaling overhead without focusing on the total call bandwidth. Option C misrepresents the impact of compression on CAC calculations. Option D focuses solely on RTP traffic, which does not provide a complete view of the bandwidth calculations necessary for determining call capacity.