Exam MS-721 topic 1 question 108 discussion

Actual exam question from Microsoft's MS-721

Question #: 108
Topic #: 1

Your company has a Microsoft Teams Phone deployment that uses Direct Routing and a single carrier.

You deploy a new Session Border Controller (SBC) that shows as healthy in the Microsoft Teams admin center.

You place a test call over the new SBC. and the call succeeds.

When you attempt to transfer the call, the transfer fails. A portion of the SIP ladder is shown in the exhibit. (Click the Exhibit tab.)

What is a possible cause of the issue?

A. NOTIFY is enabled in the SIP options of the SBC.
B. The carrier rejects the format of the forwarded FROM number.
C. The SSL certificate of the SBC is incorrect.
D. The Refer on the SBC is misconfigured.

Show Suggested Answer

Suggested Answer: D 🗳️

by Dylan29 at Dec. 22, 2023, 2:10 a.m.

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Dylan29

11 months, 3 weeks ago

Same question on the old MS-720 exam. Here is the link to reference the information. Looks like D is correct - https://learn.microsoft.com/en-us/microsoftteams/troubleshoot/phone-system/direct-routing/issues-with-call-transfers#calls-drop-before-the-transfer-is-completed

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