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International Telecommunications Union

The International Telecommunications Union, 150 years of history

Ever since the 17th May 1865, date on which the first telegraphic convention to manage the first international telegraphic networks was signed, the ITU has been at the centre of all communications related technological advances, from telegraph to satellites, the internet and mobile phones. 

The first international radio-telegraphic convention was held in Berlin in 1906, in particular to regulate wireless telegraphy, of which the first spectacular application was in the sea safety field. At the time, the first Radio-broadcasting Regulation (RR) only covered two wavelengths, 300 m and 600 m, used for maritime radio-communications. 

Two famous shipwrecks showed the effectiveness of marine radio:

  1. Thanks to a wireless call in 1909, 920 passengers were saved by the American coastguards when the Republic and the Florida collided.
  2. The Titanic used the SOS code for the first time in 1912: 700 people, or almost a third of the passengers, were rescued by several ships, including the Carpathia, which arrived on site one hour after the ship sank.

This conference established the “SOS” as the global marine distress signal. At the start of that century, the ITU had 29 member nations.

As a direct consequence of the First World War, the 20s experienced a high increase in both domestic and professional use of radio. It became necessary to list and organise frequency bands to improve efficiency and quality. To accompany this rapid growth, the 1927 Washington Conference resulted in the first frequency distribution table.  The frequency unit at the time was the kilocycle (it was only in 1959 that the Hertz became the frequency unit of measurement). In 1932, to better express the range of its responsibilities, the International telegraphic union became the International Telecommunications Union

In 1947, following the Atlantic City conference, the ITU became attached to the United Nations.  During this conference, which was held from 16th May to 2nd October 1947 (four and a half months), the frequency distribution table was completely revised, as the result of the progress in the uses of radio made during the Second World War and the beginning of the Cold War.   The end of the 60s marked the beginning of the first frequency assignments for space programmes (1968).

The very serious RR also provided for possible extra-terrestrial communications. Indeed, n° 5341 of RR article 5 recognises the SETI (Search for Extra-Terrestrial Intelligence programme. This American programme dating from the 60s, groups together projects of which the purpose is to detect signals an extraterrestrial life form might emit, whether deliberately or not, from its planet of origin.   The searches were located in the 1,400-1,727 MHz and 197-220 GHz bands.

Currently, the ITU has 193 member countries and some 700 private sector organisations. A long way from its first international telegraphy harmonisation works, today its actions cover the entire ICT sector, from digital broadcasting to the internet, including mobile technology and 3D television.  

To find out more:

The WRCs and the ITU-R study commissions

The ITU gathers together 193 member states. It is composed of three sectors: standardisation (ITU-T), telecommunications development (ITU-D) and radiocommunications (ITU-R). The ITU's objectives, structure, organisation and operation are governed by its constitution and its convention which are amended every four years during the plenipotentiary conferences. These two fundamental texts lay down the principles on which the Union is founded, in particular the role it is given to assign the radio spectrum frequency bands and record the uses of frequencies and orbital resources in order to avoid interference between member states.

It is the ITU-R's role to assign frequencies to radiocommunications services worldwide, coded in the Radiocommunications Regulations.

  •   The World Radiocommunications conferences (WRC) meet every three or four years to decide on the changes to be made to the Radiocommunications Regulations (RR) in order to adapt the existing framework to the spectrum needs to develop existing applications or introduce new applications. The RR splits the spectrum into frequency bands that are each assigned to one, or more generally several, radiocommunications services; the RR governs the use that these services can make of these bands.  The RR is a treaty that is binding on the public services that are members of the ITU. Each state has a national frequency plan that carries over and completes the relevant RR provisions for that State.
  •  The ITU-R study commissions, which are supervised by the radiocommunications assemblies that meet jointly with the world conferences, adopt Recommendations that tend towards a certain technical standardisation at the worldwide level. Some of these commission work groups are also in charge of preparing the items on the WRC conference agenda.
  • The Radiocommunications Regulations are the regulatory framework for the spectrum use that is applicable to all ITU member states. It is completed by a set of procedural rules which, when applicable, clarify certain obscure aspects or lift certain incoherences.

The ANFR’s action with the ITU

The Agency takes part in the preparatory works in the study commissions and in the ITU-R work groups and actions, in the CEPT groups and in the inter-regional meetings. It defends the French positions drawn up with the assignees and all the French players in the sector in question in the framework of the advisory commission for world radiocommunications conferences and the radiocommunications assembly advisory commissionn.

  • The WRCs, which last four weeks considering the number and complexity of the studies required by crowded agendas and the high economic stakes these decisions put into play, require much prior work. These are carried out within the ITU Radiocommunications sector (ITU-R) by its work and action groups, under the control of the Conference preparation meeting (CPM) which meets about six months prior to the WRC in order to finalise technical and regulatory studies in the form of a report and to identify options to fulfil the different items on the agenda. The purpose of this report is to help all ITU member states to make proposals during the Conference.
  • WRC preparation also occurs in the context of regional organisations (CEPT in Europe, CITEL for the Americas, APT for Asia-Pacific, RCC for the IEC countries, Arab League, UAT for Africa) and inter-regional organisations through exchanges between those organisations.

Vous voulez tout savoir sur les antennes #5G ? Cet article détaillé devrait lever toutes les questions que vous vous posez, en revenant notamment sur les fondamentaux !

#LesEnquêtesANFR 🧐
Les agents de l’@anfr sur le terrain pour résoudre un brouillage des services #3G d’un opérateur mobile. Pour cette enquête, c’est une voiture connectée … qui déconnectait les téléphones !

Dans le cadre de ses missions de surveillance du marché, l’@anfr a contrôlé le téléphone XIAOMI MI NOTE 10 et a pris acte de sa mise à jour, afin de respecter la valeur limite du #DAS localisé «tronc».

+ d'info :

L’@anfr a repris les sessions d’examen pour l’obtention du Certificat restreint de radiotéléphoniste (CRR) ! Le CRR est requis pour les plaisanciers navigant à l'étranger et utilisant un équipement radio VHF.

Où l'on découvre qu'une voiture électrique, parce qu'elle dispose de fonctions connectées, peut brouiller un réseau de téléphonie mobile...

Une enquête des limiers de @anfr

[#Newsletter] 🗞️🗞️

🆕 Découvrez notre dernière lettre d'information !


#Recrutement 🧐
L'@anfr recrute :

▶️ Un(e) directeur(directrice) du contrôle du spectre
▶️ Un(e) gestionnaire administratif(ve)


L’@anfr a préparé en 2019 le futur déploiement du réseau #5G, avec la publication de documents de référence sur l’exposition du public aux ondes et le suivi étroit des expérimentations menées dans plusieurs🏙️de 🇫🇷.Les chiffres clés pour cette mission:

L’@anfr contrôle la bonne utilisation des fréquences pour garantir la sécurité des investissements des utilisateurs du spectre mais aussi la sécurité des personnes. Dans cette vidéo 📽️, les chiffrés clés 2019 pour cette mission :

L’@anfr met au service des téléspectateurs son expertise en cas de problèmes de réception de la #TNT : elle identifie les causes des perturbations et alerte les responsables qui doivent y mettre fin. 📽️Les chiffres clés 2019 pour cette mission : 👇

L’@anfr veille au respect des valeurs limites d’exposition du public aux #ondes radioélectriques. Dans cette vidéo 📽️, les chiffres clés pour cette mission 👇
Lire le rapport annuel complet ici :

Le rapport d’activité de l’ANFR est en ligne ! Découvrez les missions, réalisations et faits marquants de l’Agence pour l’année 2️⃣0️⃣1️⃣ 9️⃣ ici :


Depuis 2017, l'@anfr est présente à #StationF. Les startups et les porteurs de projets peuvent bénéficier de l’expertise de l’Agence sur l’utilisation des #fréquences au travers d’un accompagnement personnalisé. Pour prendre rdv :

Vous êtes organisateur d’un grand événement ? L'@ANFR peut vous aider dans la réussite de votre projet par son expertise dans la coordination et le contrôle des fréquences 📻. Elle sera présente sur le #tourdefrance2020, @rolandgarros et @24heuresdumans

Saviez-vous que Heinrich Hertz a été le premier à démontrer en 1887 l’existence des ondes électromagnétiques ? Et qu’il était persuadé que les ondes n’auraient jamais d’applications pratiques ?! Découvrez notre BD sur l’histoire des fréquences

TDF : des travaux de maintenance sur la Tour Eiffel et quelques interruptions de services #TNT à prévoir dans la nuit du 5 au 6 août

.@bouyguestelecom, @Orange, @SFR et @free inaugurent le 1er pylône mobile #4G multi-opérateurs du #Jura issu du #NewDealMobile. Le service régional @anfr de Nancy était présent aux côtés des représentants de l’État, des élus et des opérateurs.

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