Sorry, Joe, but if you don't put the Do Not Disturb light on, I can't tell that you're using your cell phone. Besides, we're always supposed to buzz you when your wife calls.
And there's a basket of peaches and figs waiting for you out here, brought in by a grateful client. But there's no way I'm going to let you know after getting my head bitten off. How should I know what's going on in there?