Since 1865, the International Telecommunication Union (ITU) has worked to enable the growth and development of telecommunication services, networks and technology around the world. Its activities are focused in three main areas.
- Standardization: setting international standards that facilitate interoperability of equipment and systems on a worldwide basis, as well as defining tariff and accounting principles for international telecommunications services.
- Radiocommunication: ensuring optimal, fair and rational use of the radio frequency spectrum, as well as coordinating matters related to radio communication services and wireless services.
- Development: implementing programmes designed to improve telecommunication infrastructure and capacity building in the developing world.
Each "Focus" page in this section gathers together links to a variety of digitized documents and other information related to the history of ITU's work in that domain.