The term structured wiring refers to creating a "backbone" for technology in your home, in an organized fashion that allows for easy upgrading to newer technologies as the need arises.
Structured wiring panels are installed in a central location, with cables from different locations all run back to the panel. This makes nterconnection quick and flexible. Structured wiring modules are installed in the panels (or "cans", as they are often called), allowing you to distribute, audio, video, telephone and data by just changing patch cables.