Worldwide standardization is handled by the International Organization for Standardization (ISO), the International Electrotechnical Commission(IEC) and the International Telegraph and Telephone Service Advisory Committee, the International Telecommunication Union( ITU), all in Geneva.
The national standards institutes from 118 countries work together in ISO, which was founded back in 1946. The aim of ISO is to facilitate the international exchange of goods and services by means of globally uniform standards and to activate cooperation in the scientific, technical and economic fields across borders.
The International Electrotechnical Commission (IEC), which is also based in Geneva, is responsible for worldwide standardization in the electrotechnical field.
The results of ISO and IEC work are published as international standards. The work results of these two bodies are a prerequisite for free world trade and an important means of technology transfer to third world countries. In data communications, ISO has developed the well-known OSI reference model, among other things. The German Institute for Standardization e.V.(DIN) is a member of ISO.