CmdID

CmdID / PowerShell / Cmdlets / Set

Set-CsPhoneNumberTenantConfiguration

This cmdlet allows the admins to set a tenant default configuration that applies to all telephone numbers within the tenant. Microsoft Teams PowerShell reference

From the Microsoft Teams PowerShell reference 5 parameters Its page in the reference

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Parameters

5 in the Microsoft Teams PowerShell reference
-AssignmentEmailEnabledEnables email notifications for all telephone number assignment operations.
-UnassignmentEmailEnabledEnables email notifications for all telephone number unassignment operations.
-AssignmentBlockedForeverSets an indefinite block on assignment for all the telephone numbers upon unassignment.
-AssignmentBlockedDaysSets a duration based assignment block on all the telephone numbers upon unassignment.
-AllowOnPremToOnlineMigrationAllows Direct Routing numbers to be migrated from OnPremises to Online automatically.