TelephonyCallGroup.oncallschanged

The oncallschanged property of the Telephony interface specifies an event listener to receive callschanged events. These events occur when the list of ongoing calls, as indicated by TelephonyCallGroup.calls, changes.

Syntax

myTelephonyCallGroup.oncallschanged = function() { ... };

These events are of type CallEvent.

Examples

// Telephony object
var tel = navigator.mozTelephony;
// Make two calls; assume they are both answered
var call1, call2;
tel.dial(number1).then(call => call1 = call);
tel.dial(number2).then(call => call2 = call);
// Add both calls to the conference call
// Two entries will appear in conference.calls (call1, call2)
// but nothing in tel.calls
var conference = tel.conferenceGroup;
conference.add(call1, call2);
conference.oncallschanged = function() {
  // When call list changes, do something
};

Specifications

Browser compatibility

For obvious reasons, support is primarily expected on mobile browsers.

See also

• Using the Web Telephony API
• TelephonyCall
• CallEvent
• Navigator.mozTelephony