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Exam MS-721 topic 1 question 20 discussion

Actual exam question from Microsoft's MS-721

Question #: 20
Topic #: 1

[All MS-721 Questions]

You have a Microsoft Teams Phone deployment.
You need to implement PSTN connectivity by using Direct Routing.
What are three requirements for the implementation? Each correct answer presents part of the solution.
NOTE: Each correct selection is worth one point.

A. a public DNS entry that maps the FQDN of the Session Border Controller (SBC) to a public IP address
B. a Session Border Controller (SBC) that uses a hostname in the onmicrosoft.com domain
C. a Teams-certified Session Border Controller (SBC)
D. a firewall rule that opens a TCP signaling port to Microsoft Teams
E. a firewall rule that opens a UDP signaling port to Microsoft Teams

Show Suggested Answer

Suggested Answer: ACD 🗳️

by ServerBrain at Nov. 15, 2023, 9:32 p.m.

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Nico282

1 year, 1 month ago

Selected Answer: ACD

https://learn.microsoft.com/en-us/microsoftteams/direct-routing-plan#sip-signaling-ports

upvoted 1 times

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Azazel993

1 year, 1 month ago

ACD - TCP port 5061 is used for SIP signaling and UDP ports 3478-3481 are used for media traffic.

upvoted 3 times

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ServerBrain

1 year, 3 months ago

ACE SIP signaling is on UDP ports not TCP ports

upvoted 3 times

bikewun

9 months, 1 week ago

SIP clients usually use TCP or UDP on port numbers 5060 or 5061 to connect to SIP servers and other SIP endpoints.

upvoted 1 times

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bikewun

9 months, 1 week ago

Signaling to Teams is TCP 5061. UDP is mediastream and not signaling. MS Teams uses 5067 TLS for signaling which is TCP based. upvoted 4 times

upvoted 2 times

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