This feature is not on a current W3C standards track, but it is supported on the Firefox OS platform. Although implementations may change in the future and it is not supported widely across browsers, it is suitable for use in code dedicated to Firefox OS apps.
Telephony object you can use to initiate and control telephone calls from the browser.
var phone = window.navigator.mozTelephony;
navigator.mozTelephony is a
Telephony object you can use to control the phone features of the device on which the browser is running.
This is a non standard implementation, but it is discussed at W3C as part of the System Application Working Group.
|Web Telephony API||Editor's Draft||Editor Draft (WIP).|
For obvious reasons, support is primarily expected on mobile browsers.
|Feature||Android||Firefox Mobile (Gecko)||IE Mobile||Opera Mobile||Safari Mobile|
|Basic support||Not supported||12.0 (12.0)||Not supported||Not supported||Not supported|