- Verify that the account should be a Calling Plan user.
- If the account should be a calling plan user, ensure that a phone number has been set
- If the user has a valid phone number, run the below commands through Windows PowerShell.
Set-ExecutionPolicy Unrestricted
Install-Module PowerShellGet -Force -AllowClobber
Install-Module -Name MicrosoftTeams -Force -AllowClobber
Connect-MicrosoftTeams
Set-CsUser -Identity [email protected] -OnPremLineURI tel:+xxxxxxxxxx -EnterpriseVoiceEnabled $true