Your company has a Microsoft Teams Phone deployment. You plan to deploy auto attendants and call queues. The support desk requires that its auto attendant be able to forward calls after hours to…

Question

Options

• AMicrosoft 365 Phone System
• BMicrosoft 365 Domestic Calling Plan
• CMicrosoft 365 Phone System - Virtual User
• DOffice 365 E3
• EMicrosoft 365 E5
• FMicrosoft 365 Domestic and International Calling Plan

• A
  14% (4)
• B
  76% (22)
• E
  7% (2)
• F
  3% (1)

Explanation

Auto attendants in Microsoft Teams are configured as resource accounts, which require two things to forward calls to external mobile numbers: a resource account license and PSTN (phone network) connectivity. Option C (Phone System - Virtual User) is the correct resource account license - it's free or very low cost and purpose-built for auto attendants and call queues, making it the cost-minimizing choice over a full user Phone System license. Option B (Domestic Calling Plan) is required to enable outbound calls to local mobile numbers via the PSTN; without a calling plan attached to the resource account, it cannot dial out externally.

The distractors fail because: A (Phone System) is the per-user license - valid for humans, but redundant and costlier than the Virtual User license for resource accounts; D (E3) and E (E5) are full Microsoft 365 suite licenses that would massively overspend just to license an auto attendant; F (Domestic and International) provides unnecessary international calling capability when only local mobile numbers are needed, costing more than the Domestic-only plan.

Memory tip: Think "Virtual = robot, Domestic = local." An auto attendant is a virtual robot that doesn't need a human-grade license (use the free Virtual User), and since calls go to local mobiles, you only need the Domestic plan - anything more is overpaying.

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