In 1906 Berlin was the host of a conference to consider radiotelegraph standards. It was attended by representatives of 29 nations and culminated in the International Radiotelegraph Convention. An annex to the convention eventually became known as ITU Radio Regulations. At the conference it was also decided that the Bureau of the International Telegraph Union would also act as the conference's central administrator. The name International Telecommunication Union was adopted in 1932 to reflect its expanded responsibilities over radio and the telephone. On 15 November 1947, the ITU entered into an agreement with the newly created United Nations to become a specialized agency within the UN system.

The mandate of the ITU has broadened with the advent of new communications technologies. It promotes the shared global use of the radio spectrum, facilitates international cooperation in assigning satellite orbits, assists in developing and coordinating worldwide technical standards, and works to improve telecommunication infrastructure in the developing world. It is also active in the areas of broadband Internet, optical communications (including optical fibre technologies), wireless technologies, aeronautical and maritime navigation, radio astronomy, satellite-based meteorology, TV broadcasting, amateur radio, and next-generation networks.

Based in Geneva, Switzerland with regional offices on every continent. the ITU's global membership included 193 countries as well as more than 1,000 businesses, academic institutions, and international and regional organizations. [ITU Website]