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Question 372 - 350-801 discussion

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A Cisco IP Phone 7841 that is registered to a Cisco Unified Communications Manager with default configuration receives a call setup message. Which codec is negotiated when the SDP offer includes this line of text?

M=audio 498181 RTP/AVP 0 8 97

A.

G.711ulaw

Answers
A.

G.711ulaw

B.

iLBC

Answers
B.

iLBC

C.

G.711alaw

Answers
C.

G.711alaw

D.

G.722

Answers
D.

G.722

Suggested answer: A

Explanation:

The SDP offer includes the following line of text: M=audio 498181 RTP/AVP 0 8 97 This line of text indicates that the following codecs are available: 0: G.711ulaw 8: G.711alaw 97: iLBC The Cisco IP Phone 7841 is registered to a Cisco Unified Communications Manager with default configuration. This means that the phone will negotiate the G.711ulaw codec.The G.711ulaw codec is a standard codec that is used for voice communication. It is a low-bandwidth codec that provides good quality.The iLBC codec is a newer codec that is designed for use in low-bandwidth environments. It provides good quality, but it is not as widely supported as the G.711ulaw codec.The G.722 codec is a high-quality codec that is used for voice communication. It provides excellent quality, but it requires more bandwidth than the G.711ulaw codec.


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asked 10/10/2024
Lizbeth Perea Joseph
34 questions
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