Cisco Unified Communications Manager Regions: Max Audio Bit Rate and Codec Selection

What Happens When Setting Max Audio Bit Rate to 8 kbps?

Question

You are adding regions in Cisco Unified Communications Manager.

Which codec(s) are selected when a call is placed if you set up the max audio bit rate to use 8 kbps?

Answers

Explanations

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A. B. A. D. E. A. G. H. A. .

A.

When adding regions in Cisco Unified Communications Manager, you can set the maximum audio bit rate for calls between regions. If you set the maximum audio bit rate to 8 kbps, it means that the codec used for the call will be limited to codecs that have a maximum bit rate of 8 kbps or lower.

Out of the answer options provided, the codecs that have a maximum bit rate of 8 kbps or lower are G.729 and G.711ulaw. Therefore, the correct answers are:

B. 729 D. 729 and 711ulaw

G.711alaw and G.722 have maximum bit rates that exceed 8 kbps, so they would not be selected when the maximum audio bit rate is set to 8 kbps.

It's important to note that when selecting codecs, you should consider the trade-off between audio quality and bandwidth utilization. Codecs with lower bit rates consume less bandwidth but may result in lower audio quality, while codecs with higher bit rates consume more bandwidth but provide better audio quality.