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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 th ... [...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 and the lower limit of infrared frequencies; these are the frequencies at which energy from an oscillating current can radiate off a conductor into space as radio waves. 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 conductors can radiate into space as electromagnetic waves ( radio waves). This is the basis of radio technology. * RF current does not penetrate deeply into electrical c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vidéotron
Vidéotron is a Canadian integrated telecommunications company active in cable television, interactive multimedia development, video on demand, cable telephony, wireless communication and Internet access services. Owned by Quebecor, it primarily serves Quebec and Ottawa, as well as the Francophone communities of New Brunswick and some parts of Eastern Ontario. Its principal competitors are Bell Canada and Telus Communications. Vidéotron is the List of Canadian mobile phone companies, fifth-largest wireless carrier in Canada, with nearly 1,700,000 mobile subscribers as of Q2 2022. History Vidéotron was established in 1964, under the name "Télécâble Vidéotron Ltée" as northern Montreal's first cable television network. It started with 66 subscribers. André Chagnon served as the company's founding president. From 1966 to 1969, Vidéotron expanded by acquiring several cable networks in many regions of the province of Quebec. In 1969, the company offered the first pay-per-vi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orange (telecommunications)
Orange S.A. (), formerly France Télécom S.A. (stylized as france telecom) is a French multinational corporation, multinational telecommunications corporation. It has 266 million customers worldwide and employs 89,000 people in France, and 59,000 elsewhere. In 2015, the group had revenue of €40 billion. The company's head office is located in the 15th arrondissement of Paris, 15th arrondissement of Paris. Orange has been the company's main brand for mobile phone, mobile, landline, internet and Internet Protocol television (IPTV) services since 2006. The Orange brand originated in the United Kingdom in 1994 after Hutchison Whampoa acquired a controlling stake in Orange UK, Microtel Communications: that company became a subsidiary of Mannesmann in 1999 and then was acquired by France Télécom in 2000. The France Télécom company was rebranded to Orange on 1 July 2013. The company has faced criticism due to the Orange S.A. suicides. History Nationalised service (1 ... [...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 company providing fixed-line telephone services, a mobile phone network, internet access services, and (through its Spark Digital division) ICT services to businesses. It was known as Telecom New Zealand until it was rebranded with its current name in 2014. It has operated as a publicly traded company since 1990. Spark is the second-largest wireless carrier in New Zealand, with 2.3 million subscribers as of July 2017. 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 in 1990. In 2008, Telecom was operationally separated into three divisions under local loop unbundling initiatives by central government – Telecom Retail; Telecom Wholesale; and Ch ... [...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 voice, mobile, internet access, pay television and other products and services. It is a member of the S&P/ASX 20 and Australia's largest telecommunications company by market share. Telstra is the largest wireless carrier in Australia, with 18.8 million subscribers as of 2020. Telstra has a long history in Australia, originating together with Australia Post as the Postmaster-General's Department upon federation in 1901. Telstra has transitioned from a state-owned enterprise to a fully privatised company and has recently focused on diversified products and emerging technologies. 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
True Corporation
True Corporation Public Company Limited (TRUE) is a communications conglomerate in Thailand. True controls Thailand's largest cable TV provider, TrueVisions, Thailand's largest internet service provider True Internet and one of Thailand's largest mobile operators, TrueMove H, which is second only to AIS. 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. True is a subsidiary of Charoen Pokphand Group, which holds 50% of True's shares as of March 2017. It operates fixed-line (as a concessionaire of TOT), wireless, cable TV, IPTV and broadband services. History True Corporation was established on 13 November 1990 as TelecomAsia. The company had partnership with Verizon. The company was listed on the Stock Exchange of Thailand on . In 2001, TelecomAsia set up mobile phone subsidiary TA Orange with Orange SA. Orange sold off its stake in 2003 but th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CAT Telecom
CAT Telecom Public Company Limited ( th, บริษัท กสท โทรคมนาคม จำกัด (มหาชน)) 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-Auction, and e-Security. History CAT Telecom Public Company Lim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pelephone
Pelephone ( he, פלאפון, , lit. "wonder phone") is a mobile network operator in Israel, and also the first company to offer mobile telephony services in Israel. Due to this, the brand-name "Pelephone" became the genericized trademark for mobile phones in Israel, regardless of service provider. The company is a subsidiary of the Israeli telecommunications conglomerate Bezeq, which is also the principal provider of terrestrial telephone service in the country. As of June 2016 Pelephone had 2.26 million wireless subscribers. History Pelephone was founded as a company in 1985 as a joint venture between Motorola and Tadiran, after Motorola was awarded the contract to build Israel's first mobile phone network in November 1983. Pelephone began operations of its mobile phone network in March 1986. Pelephone's first television commercial featured Israeli actor Hanan Goldblatt using his car phone to buy and sell shares via a stockbroker while driving at the same time. In 1994, Bezeq ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cellcom (Israel)
Cellcom ( he, סלקום) () is an Israeli telecommunications company. Founded in 1994, most of the company's business is centered on wireless service. Its current CEO is Avi Gabbay, who was appointed on 4 January 2020. As of June 2016, Cellcom had 2.812 million subscribers. 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 though and during 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 initially operated a TDMA network nationwide in the 850 MHz band but after winning tenders for GSM-1800 frequencies ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
