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This API is available on Firefox OS for internal applications only.

The hangUp() method of the TelephonyCallGroup interface hangs up the entire conference call, i.e. every TelephonyCall object within it.


myTelephonyCallGroup.hangUp().then(function() { ... });




A promise that resolves with void.


// Create your 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.hangUp().then(function() {
  // run some code after the conference has
  // finished hanging up

// You could just run conference.hangUp()
// if no further action is required


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 34.0 (34.0) 2.1 No support No support No support

See also

Document Tags and Contributors

 Contributors to this page: chrisdavidmills, teoli
 Last updated by: chrisdavidmills,