Changes

}

interface TelephonySession : EventTarget {

// Do the call

void call();

attribute boolean muted;

attribute boolean speakerOn;

void startTone(DOMString tone);

void stopTone();

[optional] unsigned long toneDuration,

[optional] unsigned long intervalDuration);

readonly attribute DOMString readyState; // "calling", "incomming", "connected", "closed", "busy"