MS-700 · Question #180
You have a Microsoft 365 E5 subscription. You plan to use Teams. You run the Microsoft 365 network connectivity test tool and generate a report. You discover that the Microsoft Teams section of the…
The correct answer is D. UDP ports 3478 through 3481. For Teams media connectivity warnings due to firewall issues, you should configure UDP ports 3478 through 3481 as the destination protocol and port range.
Question
Options
- AUDP ports 50020 through 50059
- BTCP ports 3478 through 3481
- CUDP ports 50000 through 50019
- DUDP ports 3478 through 3481
How the community answered
(23 responses)- B4% (1)
- C4% (1)
- D91% (21)
Why each option
For Teams media connectivity warnings due to firewall issues, you should configure UDP ports 3478 through 3481 as the destination protocol and port range.
UDP ports in the 50000-range are not the primary, publicly documented port ranges for Teams media traffic requiring external access for direct client-to-service connections.
While some signaling might use TCP, Teams media traffic heavily relies on UDP for performance, and the specified TCP port range is not the primary one for media connectivity warnings.
Similar to option A, UDP ports in the 50000-range are not the standard, publicly documented port ranges for Teams media traffic requiring external access.
Microsoft Teams primarily uses UDP for real-time media traffic, including audio and video, as it offers better performance for latency-sensitive applications. The specific UDP port range recommended for Teams media traffic that requires direct egress from the client to the internet is 3478-3481, which includes STUN, TURN, and ICE ports. Proper configuration of these UDP ports on the firewall is critical for optimal media connectivity.
Concept tested: Teams firewall port configuration for media traffic
Source: https://learn.microsoft.com/en-us/microsoftteams/connectivity-requirements
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