TelephonyCall.state

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

The state read-only property of the TelephonyCall interface returns the current state of the phone call.

Syntax

var state = myCall.state;

Value

A DOMString.

Call state possible values

State String	Description
`alerting`	The phone has successfully connected to the remote party across the network, and the 'alerting' ring tone can now be heard by the caller.
`connected`	The phone has successfully connected to the number being called, and the receiving phone has answered the call.
`dialing`	The phone is currently dialing out to place the call.
`disconnected`	The call has ended.
`held`	The call is currently on hold.
`incoming`	The call is in the process of being received.

Obsolete call state values

The following states were available in older implementations of the API, but not in the latest master code. Transient states are no longer used, and busy is not really a state, so is instead covered by one of the possible return values of TelephonyCall.disconnectedReason.

State String	Description
`busy`	The number that was dialed for this call is busy.
`connecting`	The number has been dialed and the phone is attempting to connect.
`disconnecting`	The call is in the process of being disconnected.
`holding`	The call is entering a "hold" state.
`resuming`	The call is returning from hold to an active state.

Examples

// Telephony object
var tel = navigator.mozTelephony;
// Receive a call
tel.onincoming = function (e) {
  var incomingCall = e.call;
  // Get the state of the incoming call; should return 'incoming'
  console.log(incomingCall.state);
  // 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.

Desktop
Mobile

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