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

The calls read-only property of the TelephonyCallGroup interface returns an array containing all the TelephonyCall objects representing the calls currently added to the call group.


var conferenceCallList = myTelephonyCallGroup.calls;


An Array of ongoing calls, each represented by a TelephonyCall object.


// 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);


Specification Status Comment
Web Telephony Draft Draft

Browser compatibility

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

Supported in Firefox OS 1.0.1.

See also

Document Tags and Contributors

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