This part of the Handbook provides tutorial information and an overview on the subject of digital terrestrial television broadcasting (DTTB) systems. It describes a system designed to transmit high quality audio and video services over a single 6, 7, or 8 MHz broadcasting channel and provides a tutorial on the technologies that support the Recommendations developed by the former Task Group 11/3 during the period 1992 through 1996. It also provides a summary of the state of development in systems specifications and plans for service implementation up to the end of 1998.