Digital television systems are expected to replace analog television systems, which have been used to provide sound and visual programming to many millions of people around the world for more than half a century. ITU-R sector has decided to release a manual for engineers, responsible for the implementation of digital terrestrial television broadcasting (DTV) , in the form of a single reference book , Containing Materials , which cover both systemic aspects , as well as planning issues in this new, This is a very complex area.. The result is a book of quite a large volume, in which everyone interested in digital television will find something both informative and useful. It should not be expected that all existing analogue television services will be replaced by digital services in one day. This will likely take several, and possibly many, years. We hope that this guide will become a source of information and assistance in the coming interesting years.