Quinazolinones of formulae 1a, 1b, 1c and 1d are disclosed. The electronics unit may include a current sensor operable to determine an output current. The center of the loop is raised and secured to the pole, thus forming two bights in the loop. The model estimates the user activity information as user multimedia access demands during particular time periods within a day. If the device andor user is authorized and sufficient prepay funds exist, then the method grants the request for the non-essential service.