protected virtual void OnCallStateChanged(
	CallStateChangedArgs args
)

Protected Overridable Sub OnCallStateChanged ( 
	args As CallStateChangedArgs
)

protected:
virtual void OnCallStateChanged(
	CallStateChangedArgs^ args
)

abstract OnCallStateChanged : 
        args : CallStateChangedArgs -> unit 
override OnCallStateChanged : 
        args : CallStateChangedArgs -> unit