Big Al's Pizza Network diagram shows the layout of their equipment including an Acer laptop, Dell printer, Brother laser printer, Yamaha receiver connected to 3 KLH speakers, a D-Link switch connected to their Verizon DSL line, laptop, and 2 credit card machines. The network also includes 2 PSTN phone lines, an intercom system, and a flatscreen TV connected via VGA cable for their dining room.