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Microsoft Collaboration Communications Systems Engineer MS-721 Question # 34 Topic 4 Discussion

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Microsoft Collaboration Communications Systems Engineer MS-721 Question # 34 Topic 4 Discussion

MS-721 Exam Topic 4 Question 34 Discussion:
Question #: 34
Topic #: 4

You have a Microsoft Teams Phone deployment.

You have a PBX that connects to the PSTN by using an E1/T1 Primary Rate interface (PRI).

You plan to migrate to Direct Routing by using the existing PSTN services.

What should you install upstream of the PBX?
A.

a physical Session Border Controller (SBC)

B.

an FXO SIP Analog Telephony Adapter (ATA)

C.

a virtual Session Border Controller (SBC)

D.

a Session Border Controller (SBC) in Azure

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Actual exam question for Microsoft MS-721 exam by Flint6964 at Nov 11, 2025, 12:47:17 AM

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