I use: https://whereby.com https://whereby.com I don't know if it can handle sizable calls but it works well for me. It's simple, seems to have a decent privac

I use: https://whereby.com https://whereby.com I don't know if it can handle sizable calls but it works well for me. It's simple, seems to have a decent privacy policy, and has always just worked. The only drawback for me is they raised $10M a couple years back.