CmdID

CmdID / PowerShell / Cmdlets / Get

Get-UMMailboxPolicy

Use the Get-UMMailboxPolicy cmdlet to display the properties and values of a Unified Messaging (UM) mailbox policy. Exchange PowerShell reference

From the Exchange PowerShell reference 3 parameters Its page in the reference

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Parameters

3 in the Exchange PowerShell reference
-IdentityThe Identity parameter specifies the identifier for the UM mailbox policy being viewed.
-DomainControllerThe DomainController parameter specifies the domain controller that's used by this cmdlet to read data from or write data to Active Directory.
-UMDialPlanThe UMDialPlan parameter specifies that all UM mailbox policies associated with the UM dial plan are displayed.