This presentation discusses distributed antenna systems (DAS). It explains that a DAS uses a network of spatially separated antenna nodes connected to a common transport medium like fiber optic cable to extend wireless coverage and capacity. DAS are needed to provide seamless high quality coverage indoors where existing outdoor cellular signals cannot penetrate. The presentation outlines the pre-installation, installation, and post-installation process for setting up a DAS, and notes that they are useful for venues like shopping centers, stadiums, airports and more where many people congregate.