Ms. Chang dials a secret number which controls the power in her house. To get through to the air conditioner, she must dial "5," and to turn it off, she dials "1" as the last digit. The phone answers then with a "beep" sound, meaning the operation has been completed.
張太太撥了一個控制密碼，啟動控制開關；接著撥「冷氣機」的代號 5；最後撥「關掉」的代號 1，指示完成後，電話傳出嗶﹘﹘地一聲，表示完成指示，一切沒問題。