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MS-721: What PowerShell Cmdlet Configures Microsoft Teams Rooms for Third-Party Meeting Invitations?

Learn how to use the Set-CalendarProcessing PowerShell cmdlet to enable Microsoft Teams Rooms devices to accept third-party meeting invitations like Zoom or Webex.

Question

You have a Microsoft Teams deployment.

You have a Teams Rooms device named Device1.

You plan to use PowerShell to configure Device1 to enable invitations to third-party online meetings.

Which PowerShell cmdlet should you run?

Select only one answer.

A. Enable-CSMeetingRoom
B. Set-CalendarProcessing
C. Set-CSMeetingConfiguration
D. Set-CsTeamsAcsFederationConfiguration

Answer

B. Set-CalendarProcessing

Explanation

To enable a Microsoft Teams Rooms device (e.g., Device1) to accept invitations for third-party online meetings (e.g., Zoom, Webex), you must configure its associated Exchange Online room mailbox. Specifically, the Set-CalendarProcessing cmdlet is used to modify calendar processing options that allow external meeting requests to be processed.

Why Set-CalendarProcessing is Correct

The Set-CalendarProcessing cmdlet is essential for enabling resource mailboxes (like those used by Teams Rooms) to process external meeting invites. This includes:

  • Allowing external meeting messages by setting the -ProcessExternalMeetingMessages parameter to $true.
  • Ensuring the meeting invite’s body and subject are retained so the device can parse the join link for third-party meetings.

Example Command:

Set-CalendarProcessing -Identity "Device1" -ProcessExternalMeetingMessages $true

This command enables Device1’s mailbox to process external meeting messages, ensuring compatibility with third-party platforms like Zoom or Webex.

Why Other Options Are Incorrect

  • A. Enable-CSMeetingRoom: This cmdlet is unrelated to calendar processing or third-party meeting configurations. It is used for enabling Skype for Business or Teams meeting rooms but does not address calendar settings.
  • C. Set-CSMeetingConfiguration: This cmdlet configures global or per-user meeting policies in Teams but does not modify Exchange mailbox calendar settings required for third-party invites.
  • D. Set-CsTeamsAcsFederationConfiguration: This cmdlet deals with Azure Communication Services federation settings and is irrelevant to enabling third-party meeting invitations for Teams Rooms.

Additional Notes

  • Ensure you have administrative access to Exchange Online before running the cmdlet.
  • Verify the current calendar processing settings using Get-CalendarProcessing before making changes.
  • After enabling this feature, test by sending a third-party meeting invite to confirm the configuration works as expected.

By using Set-CalendarProcessing, you ensure seamless integration of Microsoft Teams Rooms with external meeting platforms, enhancing collaboration capabilities across diverse environments.

The first thing you must do to enable integration with third-party online meetings from Team Rooms is to set the calendar processing rules for the device’s Microsoft Exchange Online room mailbox. The room mailbox must allow external meetings and keep the message body and subject so that the device can see the URL needed to join the third-party meeting. Use the Set-CalendarProcessing cmdlet to set these room mailbox options.

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