How to call from a browser to a phone?

Question

JavaScript

Who knows the services that allow you to call from the browser to Russian numbers? so that you can integrate the js code on your site and call from there?

Answer 1

You can't do this for free, you need a telephony provider.
Here is a library - https://www.doubango.org/sipml5/ - with which you can make a phone on the site and make calls.

Answer 2

If I'm not mistaken, then for free there are such widgets for sites. Write to them in support.