CmdID / PowerShell / Cmdlets / Get
Get-UMServer
Use the Get-UMServer cmdlet to view settings that are associated with the Unified Messaging (UM) server role. Exchange PowerShell reference
From the Exchange PowerShell reference 2 parameters Its page in the reference
Parameters
-IdentityThe Identity parameter specifies the Unified Messaging server that you want to view.-DomainControllerThe DomainController parameter specifies the domain controller that's used by this cmdlet to read data from or write data to Active Directory.