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MS-721 · Question #99
MS-721 Question #99: Real Exam Question with Answer & Explanation
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Maintain and troubleshoot collaboration communications systems
Question
You have a Microsoft Teams Phone deployment. You are deploying Direct Routing. All users have a SIP URI in the format of [email protected]. The Session Border Controller (SBC) is named sbc.voice.contoso.com. When troubleshooting errors on the SBC, you receive the warning shown in the following exhibit. What is a possible cause of the issue?
Options
- AThe firewall blocks outbound traffic on port 443 to Microsoft Teams.
- BThe firewall blocks traffic to the signaling port on the SBC.
- CTLS 1.2 is enabled on the SBC.
- DMicrosoft 365 Phone System licenses are not assigned to the users.
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Topics
#Direct Routing#SBC troubleshooting#Firewall configuration#SIP signaling