Are Common Area Phones ‘Devices’ or ‘Contacts’?

I'm writing a quick post after a discovery I made while trying to answer someone's question on my other post. What permissions do you need to manage Common Area Phones? You need RTCUniversalUserAdministrators membership if you want to manage them via normal Powershell (remote or local) or CsUserAdministrator  if you want to manage them through a [...]