International Telecommunication Union

The International Telecommunication Union is a United Nations specialized agency that coordinates global telecommunications standards, radio-frequency spectrum allocation, and satellite-orbit resources.

ITU Radio Regulations: The international treaty governing the use of radio-frequency spectrum and satellite orbits. The ITU’s World Radiocommunication Conferences revise these rules to coordinate services across borders.
United Nations specialized agencies: Autonomous international organizations linked to the United Nations through cooperation agreements. The ITU belongs to this group, with its own membership, constitution, and technical mandate.
International Telegraph Union: The organization founded in 1865 to coordinate international telegraph networks and rules. It was the ITU’s predecessor, established before radio and satellite communication existed.
International Mobile Telecommunications: The ITU framework defining performance requirements for generations of international mobile telecommunications. The ITU identifies which technologies meet the IMT framework, including standards for 5G.
Spectrum allocation: The designation of radio-frequency bands for particular services or uses. ITU allocations provide a global framework that national regulators adapt to domestic conditions.
World Radiocommunication Conference: A periodic ITU conference where member states revise international radio regulations. Delegations negotiate spectrum allocations and satellite coordination rules through this conference.
International treaty: A binding agreement between states governed by international law. The ITU’s constitution, convention, and radio regulations establish obligations through treaty instruments.
International Radiotelegraph Union: The early international organization that coordinated radio communication among states. Its work was integrated into the ITU as radio became part of international communications governance.
5G: The fifth generation of cellular network technology, designed for faster data and new service capabilities. ITU requirements helped define the capabilities associated with 5G mobile systems.
Interoperability: The ability of distinct systems or products to exchange information and work together. ITU standards let telecommunications equipment and networks function across national and vendor boundaries.

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