MS-721 Question #176: Real Exam Question with Answer & Explanation

Question

You have a PBX phone system that contains 100 handsets. The handsets support SIP registration. You implement a new Microsoft Teams Phone deployment that has SIP Gateway configured. You need to register the handsets with Teams. What should you do?

Options

• AFrom the Microsoft Teams admin center, create a configuration profile for each device. Configure
• BFrom the Microsoft Teams admin center, create a configuration profile for each device. Add the
• CFrom the voice calling policy, set SIP devices can be used for calls to On. Configure the
• DFrom the voice calling policy, set SIP devices can be used for calls to On. Configure the handsets

Explanation

{"question_number": 6, "correct_answer": "C", "explanation": "SIP Gateway allows SIP-compatible devices (like legacy PBX handsets) to register with Microsoft Teams. To register SIP handsets, two things must happen: First, the calling policy must have 'SIP devices can be used for calls' enabled so the feature is permitted for users. Second, each physical handset must be configured to point its SIP registration server to the SIP Gateway FQDN (sip.pstnhub.microsoft.com). Creating individual configuration profiles per device (A and B) is not required for SIP registration - that approach applies to Teams-certified IP phones managed in the admin center, not SIP Gateway devices.", "generated_by": "claude-sonnet", "llm_judge_score": 4}

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