Welcome to &TCPIUG;. This book describes how you can use the telephone network to share the development of &TCAR; with me, in a political system where the telephone line is the only communication network most people have (still limitted) access to. This book provides a guide you and your friends can follow to build your own collaborative networks using computers and the telephone network of your country. To implement the configuration described in this book, you need two or more computers connected to the telephone network of your country by mean of modem devices. Optionally, to extend the entire network, you could use Ethternet devices to create local area networks (LANs) on both ends of each connection established over the telephone network able of exchanging data between themselves. For example, consider an infrastructure where you have one LAN for each province in your country and then, each of these LANs are connected using the country's telephone network. Each LAN would have one or more server computers to concentrate the information produced by that province and then, using the telephone network, each server computer would be able of exchanging data between themselves. This infrastructure would be as expensive as a national telephone call would be (without counting the electrical power consume required by computers, of course). To make the information of this book managable, it has been organized in the following parts: describes how to link computers in order to make internet services described in available to other computers. describes how to configure computers to provide internet services and also exchange information between computers using the media described in . contains the lincense documents mentioned in this book. &preface-overview; &preface-docconvs; &preface-feedback;