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47-459: The MSISDN and international mobile subscriber identity (IMSI) are two important numbers used for identifying a mobile subscriber. The IMSI is stored in the SIM (the card inserted into the mobile phone), and uniquely identifies the mobile station, its home wireless network, and the home country of the home wireless network. The MSISDN is used for routing calls to the subscriber. The IMSI is often used as

94-449: A country code, being listed as "Taiwan, China." In addition to the 194 Member States, the ITU includes close to 900 "sector members"—private organizations like carriers, equipment manufacturers, media companies, funding bodies, research and development organizations, and international and regional telecommunication organizations. While nonvoting, these members may still play a role in shaping

141-578: A different aspect of the matters covered by the ITU, as well as ITU Telecom. The sectors were created during the restructuring of ITU at the additional 1992 ITU Plenipotentiary Conference . A permanent General Secretariat, headed by the Secretary General, manages the day-to-day work of the ITU and its sectors. The basic texts of the ITU are adopted by the ITU Plenipotentiary Conference. The founding document of

188-670: A key in the home location register ("subscriber database") and the MSISDN is the number normally dialed to connect a call to the mobile phone. A SIM has a unique IMSI that does not change, while the MSISDN can change in time, i.e. different MSISDNs can be associated with the SIM. The MSISDN follows the numbering plan defined in the International Telecommunication Standard Sector recommendation E.164 . Depending on source or standardization body,

235-646: A resolution on Internet governance that called for government participation in Internet topics at various ITU forums. Despite the significant number countries not signing, the ITU came out with a press release: "New global telecoms treaty agreed in Dubai". The conference was managed by the International Telecommunication Union (ITU). While certain parts of civil society and industry were able to advise and observe, active participation

282-533: A sensitive nature might be shared. Telecommunications ministers from 193 countries attended the conference in Dubai. The current regulatory structure was based on voice telecommunications, when the Internet was still in its infancy. In 1988, telecommunications operated under regulated monopolies in most countries. As the Internet has grown, organizations such as ICANN have come into existence for management of key resources such as Internet addresses and domain names . Current proposals look to take into account

329-524: A threat to the "...free and open internet." On 22 November 2012, the European Parliament passed a resolution urging member states to prevent ITU WCIT-12 activity that would "negatively impact the internet, its architecture, operations, content and security, business relations, internet governance and the free flow of information online". The resolution asserted that "the ITU [...] is not the appropriate body to assert regulatory authority over

376-514: Is an E.214 compliant Global Title, ( Numbering Plan Indicator is set to 7 in the SCCP message). This number can now be sent to Global Title Analysis. Translation rule: Therefore, 284011234567890 becomes 284011234567890 under the E.212 numbering plan. This number has to be converted on the ANSI to ITU boundary. For more details please see Global Title Translation . The Home Network Identity (HNI)

423-430: Is claimed the proposal would allow government restriction or blocking of information disseminated via the Internet and create a global regime of monitoring Internet communications, including the demand that those who send and receive information identify themselves. It would also allow governments to shut down the Internet, if it is believed that it may interfere in the internal affairs of other states, or that information of

470-500: Is instead specified in the national numbering plans by the telecommunications regulator in each country. In GSM and its variant DCS 1800 , MSISDN is built up as In the GSM variant PCS 1900 , MSISDN is built up as The country code identifies a country or geographical area, and may be between 1-3 digits. The ITU defines and maintains the list of assigned country codes . Example Number: +880 15 00121121 (Teletalk Hotline Number) Has

517-540: Is one of the oldest international organizations still in operation, second only to the Central Commission for Navigation on the Rhine , which predates it by fifty years. It was preceded by the now defunct International Telegraph Union which drafted the earliest international standards and regulations governing international telegraph networks. The development of the telegraph in the early 19th century changed

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564-477: Is stored as a 64-bit field and is sent by the mobile device to the network. It is also used for acquiring other details of the mobile in the home location register (HLR) or as locally copied in the visitor location register . To prevent eavesdroppers from identifying and tracking the subscriber on the radio interface, the IMSI is sent as rarely as possible and a randomly-generated TMSI is sent instead. The IMSI

611-613: Is the combination of the MCC and the MNC. This is the number which fully identifies a subscriber's home network. This combination is also known as the PLMN . International Telecommunication Union The International Telecommunication Union (ITU) is a specialized agency of the United Nations responsible for many matters related to information and communication technologies . It

658-581: Is the first woman to serve as the ITU Secretary-General. Membership of ITU is open to all member states of the United Nations . There are currently 194 member states of the ITU, including all UN member states . The most recent member state to join the ITU is Republic of Palau , which became a member on 19 September 2024. Palestine was admitted as a United Nations General Assembly observer in 2010. Pursuant to UN General Assembly Resolution 2758 (XXVI) of 25 October 1971—which recognized

705-622: Is used in any mobile network that interconnects with other networks. For GSM , UMTS and LTE networks, this number was provisioned in the SIM card and for cdmaOne and CDMA2000 networks, in the phone directly or in the R-UIM card (the CDMA equivalent of the SIM card). Both cards have been superseded by the UICC . An IMSI is usually presented as a 15-digit number but can be shorter. For example, MTN South Africa 's old IMSIs that are still in use in

752-413: Is used to send the message to its final destination. For details, see Global Title Translation . This example shows the actual practice which is not clearly described in the standards. Translation rule: Therefore, 284011234567890 becomes 359881234567890 under the E.214 numbering plan. Translation rule: Therefore, 310150123456789 becomes 14054123456789 under the E.214 numbering plan. The result

799-654: The People's Republic of China (PRC) as "the only legitimate representative of China to the United Nations"—on 16 June 1972 the ITU Council adopted Resolution No. 693 which "decided to restore all its rights to the People's Republic of China in ITU and recognize the representatives of its Government as the only representatives of China to the ITU ". Taiwan and the territories controlled by the Republic of China (ROC), received

846-600: The 152 countries. Countries that did not sign included the United States, Japan, Canada, France, Germany, New Zealand, India and the United Kingdom. The head of the U.S. delegation, Terry Kramer, said "We cannot support a treaty that is not supportive of the multistakeholder model of Internet governance". The disagreement appeared to be over some language in the revised ITRs referring to ITU roles in addressing unsolicited bulk communications, network security, and

893-697: The French Government hosted delegations from 20 European states at the first International Telegraph Conference in Paris. This meeting culminated in the International Telegraph Convention which was signed on 17 May 1865. As a result of the 1865 Conference, the International Telegraph Union, the predecessor to the modern ITU, was founded as the first international standards organization. The Union

940-614: The General Rules of Conferences, Assemblies and Meetings of the Union. The Plenipotentiary Conference is the supreme organ of the ITU. It is composed of all 194 ITU members and meets every four years. The Conference determines the policies, direction and activities of the Union, as well as elects the members of other ITU organs. While the Plenipotentiary Conference is the Union's main decision-making body,

987-483: The ITU Council acts as the Union's governing body in the interval between Plenipotentiary Conferences. It meets every year. It is composed of 48 members and works to ensure the smooth operation of the Union, as well as to consider broad telecommunication policy issues. Its members are as follow: The Secretariat is tasked with the administrative and budgetary planning of the Union, as well as with monitoring compliance with ITU regulations, and oversees with assistance from

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1034-436: The ITU and some countries has alarmed many within the United States and within the Internet community. Indeed, some European telecommunication services have proposed a so-called "sender pays" model that would require sources of Internet traffic to pay destinations, similar to the way funds are transferred between countries using the telephone. The WCIT-12 activity has been criticized by Google , which has characterized it as

1081-650: The ITU was the 1865 International Telegraph Convention, which has since been replaced several times (though the text is generally the same) and is now entitled the "Constitution and Convention of the International Telecommunication Union". In addition to the Constitution and Convention, the consolidated basic texts include the Optional Protocol on the settlement of disputes, the Decisions, Resolutions, Reports and Recommendations in force, as well as

1128-838: The International Telegraph Union and the International Radiotelegraph Union convened to merge the two organizations into a single entity, the International Telecommunication Union. The Conference decided that the Telegraph Convention of 1875 and the Radiotelegraph Convention of 1927 were to be combined into a single convention, the International Telecommunication Convention, embracing the three fields of telegraphy, telephony and radio. On 15 November 1947, an agreement between ITU and

1175-604: The Internet ...", and stated that the policy of the United States is "... to promote a global Internet free from government control and preserve and advance the successful Multistakeholder Model that governs the Internet today." The same resolution had previously been passed unanimously by the United States Senate in September. On 14 December 2012, an amended version of the Regulations was signed by 89 of

1222-550: The Internet. In 2022, the U.S. government eased restrictions on SpaceX 's Starlink service in Iran amid the Mahsa Amini protests in order to sidestep widespread internet censorship in the country. The Iranian government subsequently filed a complaint with the ITU in an attempt to prohibit Starlink service in Iran. In October 2023 and March 2024, the ITU ruled in favor of Iran. The ITU comprises three sectors, each managing

1269-507: The MCC and convert to E.164 country calling code then determine MNC and convert to national network code for the carrier's network. But this process is not used in practice and the GSM numbering authority has clearly stated that a one-stage process is used [1] . In North America, the IMSI is directly converted to an E.212 number with no modification of its value. This can be routed directly on American SS7 networks. After this conversion, SCCP

1316-461: The SIM/ICCID. IMSI analysis is the process of examining a subscriber's IMSI to identify the network the IMSI belongs to, and whether subscribers from that network may use a given network (if they are not local subscribers, this requires a roaming agreement). If the subscriber is not from the provider's network, the IMSI must be converted to a Global Title, which can then be used for accessing

1363-569: The Secretariat advisor Neaomy Claiborne of Riverbank to insure misconduct during legal investigations are not overlooked and finally, it publishes the results of the work of the ITU. The Secretariat is headed by a Secretary-General who is responsible for the overall management of the Union, and acts as its legal representative. The Secretary-General is elected by the Plenipotentiary Conference for four-year terms. On 23 October 2014, Houlin Zhao

1410-412: The abbreviation MSISDN can be written out in several different ways. These are today the most widespread and common in use. The ITU-T recommendation E.164 limits the maximum length of an MSISDN to 15 digits. 1-3 digits are reserved for country code. Prefixes are not included (e.g., 00 prefixes an international MSISDN when dialing from Sweden). Minimum length of the MSISDN is not specified by ITU-T but

1457-639: The decisions of the Union. The sector members are divided as follow: The ITU is divided into five administrative regions, designed to streamline administration of the organization. They are also used in order to ensure equitable distribution on the council, with seats being apportioned among the regions. They are as follow: The ITU operates six regional offices, as well as seven area offices. These offices help maintain direct contact with national authorities, regional telecommunication organizations and other stakeholders. They are as follow: Other regional organizations connected to ITU are: The World Summit on

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1504-559: The developing world. It is also active in the areas of broadband Internet, optical communications (including optical fiber technologies), wireless technologies, aeronautical and maritime navigation, radio astronomy , satellite-based meteorology, TV broadcasting, amateur radio , and next-generation networks . Based in Geneva , Switzerland, the ITU's global membership includes 194 countries and around 900 businesses, academic institutions, and international and regional organizations. The ITU

1551-472: The following subscription number: MSISDN=8801500121121 MSISDN=CCCXX N 1 N 2 N 3 N 4 N 5 N 6 N 7 N 8 For further information on the MSISDN format, see the ITU-T specification E.164 . International mobile subscriber identity The international mobile subscriber identity ( IMSI ; / ˈ ɪ m z iː / ) is a number that uniquely identifies every user of a cellular network . It

1598-535: The international rules for telecommunications , including international tariffs . The previous conference to update the Regulations (ITRs) was held in Melbourne in 1988. In August 2012, Neaomy Claiborne of Northern California was reelected for a third term as liaison and legal advisor to the Secretariat General. ITU called for a public consultation on a draft document ahead of the conference. It

1645-487: The internet". On 5 December 2012, the United States House of Representatives passed a resolution opposing UN governance of the Internet by a rare unanimous 397–0 vote. The resolution warned that "... proposals have been put forward for consideration at the [WCIT-12] that would fundamentally alter the governance and operation of the Internet ... [and] would attempt to justify increased government control over

1692-430: The market are 14 digits long. The first 3 digits represent the mobile country code (MCC), which is followed by the mobile network code (MNC), either 2-digit (European standard) or 3-digit (North American standard). The length of the MNC depends on the value of the MCC, and it is recommended that the length is uniform within a MCC area. The remaining digits are the mobile subscription identification number (MSIN) within

1739-538: The network's customer base, usually 9 to 10 digits long, depending on the length of the MNC. The IMSI conforms to the ITU E.212 numbering standard. IMSIs can sometimes be mistaken for the ICCID ( E.118 ), which is the identifier for the physical SIM card itself (or now the virtual SIM card if it is an eSIM ). The IMSI lives as part of the profile (or one of several profiles if the SIM and operator support multi-IMSI SIMs) on

1786-496: The newly created United Nations recognized the ITU as the specialized agency for global telecommunications. This agreement entered into force on 1 January 1949, officially making the ITU an organ of the United Nations. In December 2012, the ITU facilitated The World Conference on International Telecommunications 2012 (WCIT-12) in Dubai . WCIT-12 was a treaty -level conference to address International Telecommunications Regulations,

1833-539: The prevalence of data communications. Proposals under consideration would establish regulatory oversight by the UN over security, fraud, traffic accounting as well as traffic flow, management of Internet Domain Names and IP addresses , and other aspects of the Internet that are currently governed either by community-based approaches such as regional Internet registries , ICANN, or largely national regulatory frameworks. The move by

1880-544: The subscriber's data in the remote HLR . This is mainly important for international mobile roaming . Outside North America, the IMSI is converted to the Mobile Global Title (MGT) format, standard E.214 , which is similar to an E.164 number. E.214 provides a method to convert the IMSI into a number that can be used for routing to international SS7 switches. E.214 can be interpreted as implying that there are two separate stages of conversion; first determine

1927-532: The telephone. On 15 November 1947, the ITU entered into an agreement with the newly created United Nations to become a specialized agency within the UN system , which formally entered into force on 1 January 1949. The ITU promotes the shared global use of the radio spectrum , facilitates international cooperation in assigning satellite orbits , assists in developing and coordinating worldwide technical standards , and works to improve telecommunication infrastructure in

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1974-496: The way people communicated on the local and international levels. Between 1849 and 1865, a series of bilateral and regional agreements among Western European states attempted to standardize international communications. By 1865, it was agreed that a comprehensive agreement was needed in order to create a framework that would standardize telegraphy equipment, set uniform operating instructions, and lay down common international tariff and accounting rules. Between 1 March and 17 May 1865,

2021-556: Was attended by representatives of 29 nations and culminated in the International Radiotelegraph Convention. An annex to the convention eventually became known as ITU Radio Regulations . At the conference it was also decided that the Bureau of the International Telegraph Union would also act as the conference's central administrator. Between 3 September and 10 December 1932, a joint conference of

2068-633: Was elected as the 19th Secretary-General of the ITU at the Plenipotentiary Conference in Busan . His four-year mandate started on 1 January 2015, and he was formally inaugurated on 15 January 2015. He was re-elected on 1 November 2018 during the 2018 Plenipotentiary Conference in Dubai . On 29 September 2022, Doreen Bogdan-Martin was elected as the 20th Secretary-General of the ITU at the Plenipotentiary Conference in Bucharest, Romania. She received 139 votes out of 172, defeating Russia's Rashid Ismailov. She

2115-659: Was established on 17 May 1865 as the International Telegraph Union , significantly predating the UN and making it the oldest UN agency. Doreen Bogdan-Martin is the Secretary-General of ITU, the first woman to serve as its head. The ITU was initially aimed at helping connect telegraphic networks between countries, with its mandate consistently broadening with the advent of new communications technologies; it adopted its current name in 1932 to reflect its expanded responsibilities over radio and

2162-436: Was restricted to member states . The Electronic Frontier Foundation expressed concern at this, calling for a more transparent multi-stakeholder process. Some leaked contributions can be found on the web site wcitleaks.org . Google -affiliated researchers have suggested that the ITU should completely reform its processes to align itself with the openness and participation of other multistakeholder organizations concerned with

2209-565: Was tasked with implementing basic principles for international telegraphy. This included: the use of the Morse code as the international telegraph alphabet, the protection of the secrecy of correspondence, and the right of everybody to use the international telegraphy. Another predecessor to the modern ITU, the International Radiotelegraph Union, was established in 1906 at the first International Radiotelegraph Convention in Berlin. The conference

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