... recorder system free 4,support windows 2000,XP,vista Digital USB Recorder descriptionThe 1 lines recorder box is strong recording funtion ... telephone number has been set in black list, attention Brief: USB Interface,1 computer connects 1 telephone line, this system adopt ... , use conveniently. Accessories: 1 software disc, 1 mini logger, 1 USB cable, 2 telephone lines.Product pictures and package