Exam 300-815 topic 1 question 63 discussion

Actual exam question from Cisco's 300-815

Question #: 63
Topic #: 1

Refer to the exhibit. An engineer is troubleshooting an issue where inbound calls are failing after they are transferred. The provider reports that UPDATE is not supported, and this is causing the calls to fail. Which command should resolve this issue?

A. no midcall-signaling passthru
B. no update-callerid
C. no contact-passing
D. rel1xx require “100rel”

Show Suggested Answer

Suggested Answer: A 🗳️

by MaxG at Aug. 17, 2023, 2:47 p.m.

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decdca7

3 months, 1 week ago

Selected Answer: A

no update-callerid – This command disables caller ID updates mid-call, but the issue is with the unsupported UPDATE method, not caller ID updates.

upvoted 1 times

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Piji

4 months, 1 week ago

Selected Answer: A

The SIP UPDATE method is used to modify session parameters during an ongoing call without affecting the media. Some providers do not support the SIP UPDATE method, which can cause call failures. The "no midcall-signaling passthru" command ensures that mid-call signaling (such as UPDATE) is not passed through, preventing unsupported UPDATE messages from being sent to the provider.

upvoted 2 times

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b3532e4

5 months, 1 week ago

Selected Answer: A

no midcall-signaling passthru and Session Refresh Method change to INVITE Totally, this Q is freaky

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b3532e4

8 months, 2 weeks ago

Actually is A

upvoted 2 times

b3532e4

7 months, 3 weeks ago

sorry B

upvoted 1 times

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blude

1 year, 8 months ago

Actually is B

upvoted 1 times

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blude

1 year, 8 months ago

Tha document show the answer is D

upvoted 1 times

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MaxG

1 year, 10 months ago

Selected Answer: B

If no update-callerid command is enabled and UPDATE request contains only caller-ID changes, then re-negotiation does not happen for any early dialog caller-ID changes. If UPDATE request contains transcoder changes or video escalation or de-escalation, re-negotiation happens even if no update-callerid command is enabled. https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/voice/cube/configuration/cube-book/voi-cube-edupdate-block.html

upvoted 1 times

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