Note: This question is part of a series of questions that present the same scenario. Each question in the series contains a unique solution that might meet the stated goals. Some question sets might have more than one correct solution, while others might not have a correct solution.
After you answer a question in this section, you will NOT be able to return to it. As a result, these questions will not appear in the review screen.
A user works from a remote location and has a LAN connection and a mobile internet connection. Each connection is provided by a different internet service provider.
The user can make and receive calls by using the LAN connection. The user cannot make or receive calls by using the mobile connection.
You need to determine the cause of the issue.
Solution: Call Analytics, determine whether a voice call from the user was registered and review relevant call statistics.
Does the solution meet the goal?

1. A. Yes
2. B. No

Correct Answer: B

You are managing a Microsoft Teams environment for a company. You are setting up direct routing on a partner-hosted session border controller (SBC).
The SIP proxy does not receive SIP options from the SBC.
You need to resolve the issue.
What are two possible ways to achieve the goal? Each correct answer presents a complete solution.
NOTE: Each correct selection is worth one point.

1. A. Ensure that the Secure Real-Time Transport Protocol (SRTP) is enabled.
2. B. Replace the partner-hosted SBC with a self-deployed SBC.
3. C. Ensure that the SBC certificate is from a trusted Certificate Authority (CA).
4. D. Modify the FQDN in the SIP profile to match the SBC certificate.

Correct Answer: CD
Reference:
https://docs.microsoft.com/en-us/microsoftteams/troubleshoot/phone-system/direct-routing/sip-options-tls-certificate-issues