Exam MS-720 topic 6 question 4 discussion

Actual exam question from Microsoft's MS-720

Question #: 4
Topic #: 6

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

Show Suggested Answer

Suggested Answer: B 🗳️
Reference:
https://docs.microsoft.com/en-us/microsoftteams/troubleshoot/phone-system/direct-routing/issues-with-call-transfers

by damaka at Aug. 6, 2022, 1:48 p.m.