Welcome to BTs Network Story, a brief introduction to the technology of communications. This is designed for people who work in communications or for people who are just interested in what happens behind the scenes. It covers telephones, networks, the internet, broadband, business services, the telecoms industry and the future of the BT network. Along the way it will explain many of the terms used in communications. So if you dont know your MDF from your MSAN, or have always wanted to know what a DSLAM is, but been afraid to ask, then you've come to the right place.