A backlight module, includes a plurality of light sources and an optical sheet. Specifically, the product can be packaged between two films, wherein at least one of the films is oxygen-permeable. The ion exchange membrane may comprise, for example, a proton exchange membrane. Each peer may determine from the NAT profile information for the peer and the NAT profile information for the other peers which of the two or more peers to designate as the host. Demodulation is provided by sampling digitized incoming phone line signals at 4 times carrier frequency, and employing values representing 0 and 90 degree samples to extract the information signal. The first fine tuning array of capacitors includes a binary weighted switched capacitor network, the second fine tuning array of capacitors includes a thermometer coded switched capacitor network and the coarse tuning array of capacitors includes a binary weighted switched capacitor network with a different unit capacitance value than the first and second fine tuning arrays.