A method of packaging point-of-purchase items involves supplying plastic bags as a continuously attached length of bags, each bag being separated from adjacent bags along the supply length by a perforated tear line. The photosensitive layer has a charge generation layer located overlying the undercoat layer and a charge transport layer located overlying the charge generation layer. In the second mode, the call processor is adapted to receive voice signals and data signals at the first telephone interface, to block data signals from being transmitted via the second telephone interface and optionally to transmit voice signals via the second telephone interface.