MS-721 · Question #301
You have a Microsoft Teams Phone deployment. You are deploying Direct Routing by using a certified Session Border Controller (SBC). The FQDN of the SBC is sbc1.contoso.com. You use signaling port 5067
The correct answer is D. The Digicert root certificate is missing on the SBC.. Direct Routing in Microsoft Teams uses TLS (Transport Layer Security) to encrypt the communication between Teams and the SBC. For TLS to function correctly, the SBC must have a valid certificate chain, and the root certificate authority must be trusted by Microsoft. If the Digice
Question
Options
- AThe failover timer is set to 0 seconds.
- BCalling plan licenses are not assigned to users.
- CThe Forward P-Asserted Identify (PAI) header is disabled.
- DThe Digicert root certificate is missing on the SBC.
How the community answered
(34 responses)- A12% (4)
- B9% (3)
- C3% (1)
- D76% (26)
Explanation
Direct Routing in Microsoft Teams uses TLS (Transport Layer Security) to encrypt the communication between Teams and the SBC. For TLS to function correctly, the SBC must have a valid certificate chain, and the root certificate authority must be trusted by Microsoft. If the Digicert root certificate (or any other required root certificate) is missing or not properly installed on the SBC, TLS connectivity cannot be established, resulting in an inactive TLS status. This would prevent the SBC from communicating with Microsoft Teams and handling calls.
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