A reference to a function to be called to handle the Telephony API's
busy event. This event occurs when the call receives a busy signal from the phone network. The event handler is called with a
CallEvent as its only parameter.
instanceOfTelephonyCall.onbusy = funcRef;
This is a non standard implementation, but it is discussed at W3C as part of the System Application Working Group.
|Web Telephony||Draft||Editor Draft (WIP).|
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)||IE Mobile||Opera Mobile||Safari Mobile|
|Basic support||No support||12.0 (12.0)||No support||No support||No support|