Telephony.ready

The ready read-only property of the Telephony interface provides an asynchronous notification that the object is initialized.

This is useful because when a Telephony object is created it takes some time to sync the information with the underlying hardware layer and fully initialize. If the code tries to read a value such as Telephony.call before Telephony.ready is resolved, the value may not be correct.

Syntax

myTelephony.ready.then(function() {
  // do something now telephony is initialized
});

Value

 A Promise that resolves with void when the telephony object is initialised.

Examples

// Telephony object
var tel = navigator.mozTelephony;
tel.ready.then(function() {
  // ok, now let's make some calls
});

Specifications

Browser compatibility

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

See also

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