I had appointments with both Pdoc and T scheduled for tomorrow. For my doc, they gave me the options of in person, teleconference, telephone. I chose to talk with him on the phone. It's usually him asking about my moods, sleep, etc. and us discussing medications.
From my T, they gave me the options of teleconference or telephone. I chose to reschedule. I don't think it would be helpful to do therapy remotely for me.
Where I work, they've done telepsych appointments for years. I remember initially, they had technical difficulties with it. Usually caused by the clients machine not having enough processing power, having a slow internet connection, or their lack of knowledge. It has been a long while since I worked on that project, and the software has gotten better since then.