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Exam 300-815 topic 1 question 78 discussion

Actual exam question from Cisco's 300-815
Question #: 78
Topic #: 1
[All 300-815 Questions]



Refer to the exhibit. The Cisco Unified Border Element receives an INVITE matching inbound dial peer 5002. The outbound dial peer supports only iLBC, and a Local Transcoding Interface is allocated. Based on the configuration and SDP from the INVITE message, which codec is chosen by Cisco Unified Border Element for the inbound call leg?

  • A. G.729r8
  • B. G.711 A-law
  • C. G.711 U-law
  • D. G.729br8
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Suggested Answer: A 🗳️
by john_doe_9999 at Jan. 5, 2024, 8:36 p.m.

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b3532e4
7 months, 2 weeks ago
B. G.711 A-law becouse
upvoted 1 times
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john_doe_9999
1 year, 5 months ago
Selected Answer: A
After a lot of research on this one i'm going with A, G.729r8. The codec chosen will be the codec that is of highest preference in the voice-class code list that is also present in the SDP of the Invite. The invite has G.729 in it (no annex b). The spec for G.729r8 covers regular G.729 (no annex b) and G.729a.
upvoted 4 times
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