The Constitution and Convention of the International Telecommunication Union (short: ITU Constitution and Convention  | also: CS CV) is a treaty related to the law of nations, signed and ratified by almost all countries of the world. Constitution and Convention of the International Telecommunication Union (ITU) were signed December 22, 1992 in Geneva. It is base of the ITU and will be reassessed subsequently by the Plenipotentiary Conference. The ITU Constitution and Convention replaced the International Telecommunication Convention December 22, 1992.