Close enough, we are the link to your own phone (physical one that you have in your pocket).
So it is comfortable for you to run your own business from any place you are currently now without the need of sitting in front of the computer. Or just send the link to your parents and they will be able to call you whenever they need wihtout any additional tools. (btw you will recieve the phone call from the local number)
We want to keep it as simple as possible.