This API is available on Firefox OS for internal applications only.
The onincoming() property of the TelephonyCall interface is a reference to a function to be called to handle the Telephony API's incoming event.
This event occurs when an incoming call is detected. The event handler is called with a CallEvent as its only parameter.
Syntax
MyCall.onincoming = function() { ... };
These events are of type CallEvent.
Examples
// Telephony object
var tel = navigator.mozTelephony;
// Receive a call
tel.onincoming = function(e) {
  var incomingCall = e.call;
  // Answer the call
  incomingCall.answer();
};
Specifications
| Specification | Status | Comment | 
|---|---|---|
| Web Telephony | Draft | Draft | 
Browser compatibility
For obvious reasons, support is primarily expected on mobile browsers.
| Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari | 
|---|---|---|---|---|---|
| Basic support | No support | No support | No support | No support | No support | 
| Feature | Android | Firefox Mobile (Gecko) | Firefox OS (Gecko) | IE Mobile | Opera Mobile | Safari Mobile | 
|---|---|---|---|---|---|---|
| Basic support | No support | 12.0 (12.0) | 1.0.1 | No support | No support | No support |