CmdID

CmdID / PowerShell / Cmdlets / Remove

Remove-CsOnlineTelephoneNumber

Use the Remove-CsOnlineTelephoneNumber cmdlet to remove one or more unassigned telephone numbers from your tenant. Microsoft Teams PowerShell reference

From the Microsoft Teams PowerShell reference 4 parameters Its page in the reference

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Parameters

4 in the Microsoft Teams PowerShell reference
-Confirm, -cfThe Confirm switch causes the command to pause processing and requires confirmation to proceed.
-ForceThe Force switch specifies whether to suppress warning and confirmation messages.
-TelephoneNumberSpecifies the telephone number(s) to remove.
-WhatIf, -wiThe WhatIf switch causes the command to simulate its results.