Teams – How to mask phone numbers in meetings

The default setting for all organizations using Teams is the phone numbers are masked from the participants outside of the organization. The phone numbers are fully displayed to internal participants.

Based on certain uses cases and added privacy, Teams administrators have the ability to choose how the participants’ phone numbers appear in meetings. Options available,

  • Phone numbers are not masked, which makes it visible to everyone in the meeting
  • Phone numbers are masked for everyone except the organizer
  • Phone numbers are masked only from external participants

Using PowerShell to define phone-number masking

Use the MaskPstnNumbersType parameter of the Set-CsOnlineDialInConferencingTenantSettings cmdlet to change PSTN masking setting,

To disable phone masking,

Set-CsOnlineDialInConferencingTenantSettings -MaskPstnNumbersType "NoMasking"

To mask phone numbers from all participants in the meeting, except the organizer,

Set-CsOnlineDialInConferencingTenantSettings -MaskPstnNumbersType "MaskedForAllUsers"

To mask phone numbers from external participants only, will be visible to all internal participants,

Set-CsOnlineDialInConferencingTenantSettings -MaskPstnNumbersType "MaskedForExternalUsers"

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