I found mangnocall. Seems to be a free voice setup. You send the other person a link. They click on the link and the call connects. Too bad today's appointment

I found mangnocall. Seems to be a free voice setup. You send the other person a link. They click on the link and the call connects. Too bad today's appointment said, "We need to do a normal phone call on a phone.". I wanted to say, Sir, it's 2017. But I digress. Still need to find something accessible that lets me use legacy MAC OS and IOS to call phones. Feels more like regression than progression.