event EventHandler<VoIPEventArgs<CallState>> CallStateChanged

Event CallStateChanged As EventHandler(Of VoIPEventArgs(Of CallState))

 event EventHandler<VoIPEventArgs<CallState>^>^ CallStateChanged {
	void add (EventHandler<VoIPEventArgs<CallState>^>^ value);
	void remove (EventHandler<VoIPEventArgs<CallState>^>^ value);
}