Chartered by the United Nations (UN), the ITUT primarily is responsible for setting recommendations intended to ensure the interconnectivity of national telecommunications networks.Those recommendations are treated as standards in most countries. The original predecessor organization was the International Telegraph Union (ITU), which was formed in 1865 to ensure the interconnectivity of national telegraph networks.The ITU formed the International Telephone Consultative Committee (CCIF) in 1924, the International Telegraph Consultative Committee (CCIR) in 1925, and the International Radio Consultative Committee (CCIR) in 1927. The ITU changed its name in 1934 to the International Telecommunication Union and in 1956 the CCIT and CCIF merged to form the International Telephone and Telegraph Consultative Committee (CCITT). In 1992, the ITU formed into three sectors, the ITU-Telecommunication (ITU-T), Radiocommunication (ITU-R), and Telecommunication Development (ITU-D). See Appendix A for contact information. See also ITU-D, ITU-R, and ITU-T.