MS-700 Manage Meetings and Calling Practice Question
A user in your organization schedules a Teams meeting and wants attendees who dial in from a landline to join without needing the Teams app. The user's account is assigned an Audio Conferencing license, but the meeting invitation does not show any dial-in phone number. What is the most likely cause?
⚠ Common exam trap
The trap here is blaming the user's license or Phone System enablement, when the missing dial-in number is actually caused by an unconfigured or default-less audio conferencing bridge.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The user has not been assigned an audio conferencing bridge with a default toll or toll-free number in the Teams admin center.
Dial-in coordinates come from the organization's audio conferencing bridge. Even with an Audio Conferencing license assigned, the invitation shows no number until a bridge with a default toll or toll-free number exists for the tenant. Verifying and assigning a default bridge number restores the dial-in details for that user's meetings.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
The user has not been assigned an audio conferencing bridge with a default toll or toll-free number in the Teams admin center.
Why this is correct
For dial-in details to appear, the user's Audio Conferencing license must be paired with an audio conferencing bridge that has at least one default toll or toll-free number configured for the organization. If no bridge number is set as default, the invitation omits dial-in information even though the license is present. Assigning the bridge number resolves the missing dial-in details.
- ✗
The user's account is missing the Teams Phone System license required for PSTN dial-in.
Why it's wrong here
Audio Conferencing dial-in does not require a Phone System license; it requires an Audio Conferencing license plus a configured conferencing bridge. Confusing the two licenses leads administrators to purchase the wrong add-on. The symptom of a missing dial-in number is caused by bridge numbering, not by the absence of Phone System.
- ✗
The user needs to be enabled for Enterprise Voice before dial-in coordinates are generated.
Why it's wrong here
Enterprise Voice is about a user placing and receiving PSTN calls on their own Teams endpoint, not about meeting dial-in access. Enabling it does not cause a conferencing bridge number to appear in invitations and is unrelated to Audio Conferencing licensing. The missing dial-in details are governed by the audio conferencing bridge configuration.
- ✗
The user's meeting policy has the 'Allow dial-in users to bypass the lobby' setting disabled.
Why it's wrong here
That setting controls whether dial-in participants wait in the lobby or enter directly; it does not determine whether a dial-in number appears in the invitation. With it disabled, callers still see the number and simply wait in the lobby. The absence of any dial-in number points to bridge configuration, not to lobby admission behavior.
About these practice questions
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official Microsoft exam blueprint
This MS-700 practice question is part of Courseiva's free Microsoft certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the MS-700 exam.