Exam 300-815 topic 1 question 76 discussion

Actual exam question from Cisco's 300-815

Question #: 76
Topic #: 1

Refer to the exhibit. Outbound calls to the service provider cause intermittent errors due to a codec mismatch. The internal network sends early offer SDP that contains only G.711 A-law. The service provider reports that some destinations support only G.711 A-law while others support only iLBC. The service provider also allows only 20 active calls at a time. Which configuration allows successful media negotiation for all calls using outbound dial peers 5002 and 5003?

A. dial-peer voice 5002 voip
codec g711alaw ilbc
!
dial-peer voice 5003 voip
codec g711alaw ilbc
B. dial-peer voice 5002 voip
voice-class codec 101 offer-all
!
dial-peer voice 5003 voip
voice-class codec 101 offer-all
C. dial-peer voice 5002 voip
voice-class codec 101
!
dial-peer voice 5003 voip
voice-class codec 101
D. dial-peer voice 5002 voip
codec g711alaw
!
dial-peer voice 5003 voip
codec ilbc

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Suggested Answer: B 🗳️

by MaxG at Aug. 17, 2023, 5:45 p.m.

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john_doe_9999

10 months ago

Selected Answer: B

Without being able to see the inbound dial-peer I think B is the best answer here.

upvoted 2 times

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MaxG

1 year, 2 months ago

Selected Answer: B

All codecs are offered by default only for delayed offer calls. For Early Offer you either need to configure a codec preference list with a specific list of codec or "offer all". https://community.cisco.com/t5/unified-communications-infrastructure/cube-quot-offer-all-quot-for-voice-class-codec/td-p/4686998

upvoted 3 times

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Exam 300-815 topic 1 question 76 discussion

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john_doe_9999

MaxG

SY0-701