 MS Teams/Telephony

I need assistance with my phone (including not receiving incoming calls, being unable to make outbound calls, etc.)

I need assistance with my MS Teams phone (phone not powering on, how to sign into phone)

I need assistance with a general phone - broadsoft - (cloud based pbx, Yealink T31 found in classrooms, breakout rooms, security, many front desks, could include voicemail as there is voicemail on several of them, also Yealink MP58 - switchboard and box office, Yealink W76P - bookstore, kitchen.)