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UMTS Frequency Bands
The UMTS frequency bands are radio frequencies used by third generation (3G) wireless Universal Mobile Telecommunications System networks. They were allocated by delegates to the World Administrative Radio Conference (WARC-92) held in Málaga-Torremolinos, Spain between 3 February 1992 and 3 March 1992. Resolution 212 (Rev.WRC-97), adopted at the World Radiocommunication Conference held in Geneva, Switzerland in 1997, endorsed the bands specifically for the International Mobile Telecommunications-2000 (IMT-2000) specification by referring to S5.388, which states "The bands 1,885-2,025 MHz and 2,110-2,200 MHz are intended for use, on a worldwide basis, by administrations wishing to implement International Mobile Telecommunications 2000 (IMT-2000). Such use does not preclude the use of these bands by other services to which they are allocated. The bands should be made available for IMT-2000 in accordance with Resolution 212 (Rev. WRC-97)." To accommodate the reality that t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radio Frequency
Radio frequency (RF) is the oscillation rate of an alternating electric current or voltage or of a magnetic, electric or electromagnetic field or mechanical system in the frequency range from around to around . This is roughly between the upper limit of audio frequencies that humans can hear (though these are not electromagnetic) and the lower limit of infrared frequencies, and also encompasses the microwave range. These are the frequencies at which energy from an oscillating current can radiate off a conductor into space as radio waves, so they are used in radio technology, among other uses. Different sources specify different upper and lower bounds for the frequency range. Electric current Electric currents that oscillate at radio frequencies (RF currents) have special properties not shared by direct current or lower audio frequency alternating current, such as the 50 or 60 Hz current used in electrical power distribution. * Energy from RF currents in conduct ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Freedom Mobile
Freedom Mobile (formerly Wind Mobile) is a Canadian wireless telecommunications provider owned by Québecor. As of November 30, 2022 it is the fourth-largest wireless carrier in the country with 2,290,497 subscribers and a 6% market share, primarily concentrated in urban areas of Ontario, British Columbia, Alberta, and Manitoba. In addition to mobile phone plans, Freedom also offers home internet and TV services. Founded in 2008 by the telecommunications provider Globalive, Wind Mobile was one of several new carriers launched that year under a Canadian government initiative to foster competition in the wireless sector. Alongside Mobilicity (later acquired by Rogers Communications) and Public Mobile (later acquired by Telus Communications), Wind Mobile initially introduced mobile data and voice services in Toronto, Ontario, on December 16, 2009, and Calgary, Alberta, on December 18, 2009. In 2016, Shaw Communications acquired Wind Mobile, and subsequently rebranded it as Fre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Africell
Africell Group is a mobile technology company providing voice, messaging, data, mobile money and other integrated telecoms services to almost 20 million subscribers across Africa. It is the only mainstream US-owned mobile network operator in Africa. Company overview Africell was founded in 2001. It has US ownership and is headquartered in London, United Kingdom. The company has approximately 10,000 direct and outsourced employees and currently operates in four countries – The Gambia, Sierra Leone, Democratic Republic of Congo and Angola. Africell is a market leader in The Gambia and Sierra Leone, with approximately 60% market share of the telecoms sectors in each. In Democratic Republic of Congo, Africell has between 20 and 25% market share in the provinces in which it is active. There has been significant subscriber growth in all markets since 2010. As of January 2023, Africell has almost 20 million subscribers. Its Africell Impact Foundation was launched in July 2022. Afri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
MTN Group
MTN Group Limited (formerly M-Cell) is a South Africa, South African multinational corporation and mobile telecommunications provider. Its head office is in Johannesburg. MTN is among the List of mobile network operators, largest mobile network operators in the world, and the largest in Africa. MTN is active in over 20 countries including Asian countries like Syria, with one-third of company revenue generated in Nigeria, where it held about 35 percent market share in 2016, and 289.1 million subscribers in December 2022. MTN Group is the primary sponsorship, sponsor of the South Africa national rugby union team and sponsors English football club Manchester United F.C., Manchester United and Zambian Super League. The Nigerian subsidiary of the group also has an existing sponsorship deal with the Nigeria Football Federation, Nigerian Football Federation. History The company was founded in 1994 as M-Cell with assistance from the South African government. In 1995, it replaced i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Movicel
Movicel is the smaller of the two Angolan mobile phone companies. Its official name is ''Movicel Telecomunicações S.A.''. Movicel was originally created on July 1, 2003, as a subsidiary of the state-owned Angola Telecom. In 2010, 80% of the company's capital was sold to various private companies: Portmil - Investimentos e Telecomunicações, S.A., Modus Comunicar, S.A., Ipangue, S.A., Lambda Investment and Novatel Wireless. The remaining 20% remain in the hands of the state-owned (''empresa pública'') companies Angola Telecom and ENCTA. The seat of the company is the capital city Luanda. Movicel sells its services via a network of shops; recharging cards for pre-paid contracts are also sold by individual street sellers. Movicel claims to have more than 3 million customers out of a population of estimated 18 to 20 million people in Angola. Movicel offers GSM-based mobile communication for voice communications, text and multimedia messages, and mobile internet access. Movicel h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orange (telecommunications)
Orange S.A. (; formerly , stylised as france telecom) is a French multinational corporation, multinational telecommunications corporation founded in 1988 and headquartered in Issy-les-Moulineaux, near Paris. ''Orange'' has been the corporation's main brand for mobile phone, mobile, landline, internet and Internet Protocol television (IPTV) services since 2006. It traces its origins back to Hutchison Whampoa acquiring a controlling stake in Orange UK, Microtel Communications in 1994 in the United Kingdom. Microtel Communications became a subsidiary of Mannesmann in 1999 and then was acquired by ''France Télécom'' in 2000. The former French public telecoms monopoly thus became internationalized following this takeover and has pursued an expansionist policy since. The group now operates in many countries in Europe, Africa and in the French West Indies. Since February 2012, as a result of the company's decision to transfer its fixed-line telephony operations to its ''Orange'' brand ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Digitel GSM
Digitel is a mobile phone company in Venezuela, and the country's first to deploy a GSM network and to establish a per second charging scheme. Early in 2007, Digitel surpassed 3 million subscribers and is currently placed third, behind CANTV's Movilnet and Telefonica's Movistar. Digitel's growth has remained steady. Digitel currently provides wireless data transmission capabilities through its GSM–GPRS and high speed EDGE network. In 2007 Digitel deployed an UMTS network on its existing 900 MHz spectrum.. In 2000, after receiving government approval, Digitel sold 56.56% of its stocks to Telecom Italia Mobile, changing its name to Digitel TIM. Digitel's network originally only covered Venezuela's central region, reaching around 44% of the entire population; however, in January 2006, a request to the government to approve merger with Venezuela's two other GSM networks (Digicel and Infonet) [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spark New Zealand
Spark New Zealand Limited is a New Zealand telecommunications and digital services company providing fixed-line telephone services, mobile phone services, broadband, and digital technology services (including cloud, security, digital transformation, and managed services). Its customers range from consumers to small - medium business, government agencies and large enterprise clients. It was formerly known as Telecom New Zealand until it was rebranded to Spark on 8 August 2014. It has operated as a publicly traded company since 1990. Spark's mobile network reaches 98% of New Zealand, with over 2.7 million mobile connections and 687,000 broadband connections Spark is one of the largest companies by value on the New Zealand Exchange (NZX). As of 2007, it was the 39th largest telecommunications company in the OECD. The company is part of New Zealand Telecommunications Forum. Telecom New Zealand was formed in 1987 from a division of the New Zealand Post Office, and privatised i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Telstra
Telstra Group Limited is an Australian telecommunications company that builds and operates telecommunications networks and markets related products and services. It is a member of the S&P/ASX 20 stock index, and is Australia's largest telecommunications company by market share. Telstra has a long history in Australia, originating together with Australia Post as the Postmaster-General's Department upon Federation of Australia, federation in 1901. Telstra had transitioned from a state-owned enterprise to a fully Privatization, privatised company by 2006. History Australia's telecommunications services were originally controlled by the Postmaster-General's Department (PMG), formed in 1901 as a result of Australian Federation. Prior to 1901, telecommunications were administered by each colony. On 1 July 1975, separate commissions were established by statute to replace the PMG. Responsibility for postal services was transferred to the Australian Postal Commission (Australia Pos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
True Corporation
True Corporation Public Company Limited (stylized as true) is a communications conglomerate in Thailand. It is a joint venture between Charoen Pokphand Group and Telenor, formed by the merger between the original True Corporation and DTAC in the form of equal partnership to create a new telecommunications company that can fully meet the needs of the digital age. True controls Thailand's largest cable TV provider, TrueVisions, Thailand's largest internet service provider True Online, Thailand's largest mobile operators, TrueMove H and DTAC TriNet, which is second and third only to AIS. and entertainment media including television, internet, online games, and mobile phones under the True Digital brand. As of August 2014, True, along with True Telecommunications Growth Infrastructure Fund, had a combined market capitalization of US$10 billion. TrueMove is also a partner of Vodafone Group. Charoen Pokphand Group and Telenor hold equal ownership of 30% of True's shares as of Marc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CAT Telecom
CAT Telecom Public Company Limited (Communication Authority of Thailand : การสื่อสารแห่งประเทศไทย) So, then as known as CAT Telecom Plc. () is the state-owned company that runs Thailand’s international telecommunications infrastructure, including its international gateways, satellite, and submarine cable networks connections. Since 2021 CAT Telecom became the National Telecom Public Company Limited after merging with TOT Public Company Limited. Services Until recently, CAT had a monopoly on international telephony and CDMA mobile telephony. CAT partnered with TOT to provide the GSM mobile service Thai Mobile. In partnership with Hutchison, it provided a CDMA2000 1x mobile service in 25 central provinces and operated its own CDMA2000 1xEV-DO in 51 provinces. CAT provides data communications and applications services, such as leased line, Fiber-to-the-Premises, Gigabit Ethernet, xDSL, live TV broadcast, e-Commerce, e- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cellcom (Israel)
Cellcom () () is an Israeli telecommunications company. Founded in 1994, most of the company's business is centered on wireless service. Its current CEO is Eli Adadi. As of June 2016, Cellcom had 2.812 million subscribers. The company is traded in the Tel Aviv Stock Exchange under the symbol CEL, and is part of the Tel Aviv 35 Index. History Cellcom's entry into the Israeli market caused a revolution in wireless services in the country, as it offered service at rates which were a fraction of those charged by Pelephone, which until Cellcom's launch held a monopoly on cellular services in Israel. Its launch was not without problems. In 1995, Cellcom subscribers experienced widespread service disruptions of unknown origin. After an intensive investigation, the cause was finally traced to a software bug in Motorola's MicroTAC Alpha handsets, which were ubiquitous on its network at the time. Network Cellcom operates a 5G network (shared with Golan Telecom, WeCom, Walla Mobile) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
