Exam 300-815 topic 1 question 201 discussion

Actual exam question from Cisco's 300-815

Question #: 201
Topic #: 1

Refer to the exhibit. An engineer deploys CAC to Cisco UCM. Up to five G.711 calls must be supported on the WAN link between Site A and Site B. Users report that only four concurrent calls are possible between Site A and Site B. Why isn't the fifth concurrent call successful?

A. The G.729 audio codec is negotiated between Site A and B instead of the G.711 codec.
B. The QoS configuration on the WAN link causes the fifth call to be dropped.
C. Cisco UCM is using alternative links because of the Weight value.
D. The Audio Bandwidth value is undersized and mist be set to 400 kbps.

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Suggested Answer: D 🗳️

by Piji at Feb. 4, 2025, 1:25 p.m.

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Piji

3 months, 1 week ago

Selected Answer: D

The exhibit shows the audio bandwidth between Site A and Site B is set to 320 kbps. For G.711 calls, each call consumes approximately 80 kbps of bandwidth (64 kbps for payload and an additional ~16 kbps for overhead). This means: Maximum calls supported=Audio Bandwidth/Bandwidth per G.711 call=320/80=4 calls The fifth call cannot be established because the Audio Bandwidth value is undersized and must be set to at least 400 kbps to support five concurrent G.711 calls.

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Exam 300-815 topic 1 question 201 discussion

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Piji

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