I am between teaching sessions at the moment.  My WFH desk is a bit of a mess at the moment.  Yes, that is a Teams phone on my home desk.  I am only an adjunct instructor so I don't get a PSTN phone number as I am only on-campus two days a week.  My students can call me via Teams, though.  Teams handles our college telephony needs.  The college uses far more SaaS solutions than you might expect.