SingTel Logo — Singapore Telecommunications known by its acronym SingTel, is a company of telecommunications, with a combined subscriber base of 285 million mobile customers in late December, 2009. SingTel’s Internet service provider (Singnet), mobile phone, the line of fixed telephony services and IPTV (mio TV).

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SingTel has expanded aggressively outside its home market and owns shares in many regional operators, including 100% of the second telecommunications company in Australia, Optus, which was acquired in 2000 from Cable & Wireless and other shareholders of Optus, and 32% (the second largest shareholder after the promoters) of Bharti Airtel, the largest telecommunications company in India. More

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Telenor Logo — Telenor is a company phone Norwegian listed on the OBX Index of the Oslo Stock Exchange. The company was founded in 1855 as Telegrafverket, changed its name in 1969 to “Televerket” and was renamed again in 1994 under its current name when it was restructured as a public company. Telenor was until 1998 the monopoly of communication services for private customers in Norway. Since December traded.

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Telenor employs 23,400 workers, 12,400 of them outside Norway. In 2006 the market value of the company amounted to 125 billion Norwegian kroner (approx. 17.4 billion euros). The first telephone services offered in Norway in 1996. The Nordic NMT was introduced in 1981, 1993 n diginal system GSM. Since 2004 the network is also available UMTS for commercial use. More

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China Telecom Logo — China Telecom ( Chunghwa Telecom ) is the incumbent telephone from China . In 1999 the company was divided by the Ministry of Information Industry of the four operators in order to introduce competition and encourage the building of a more advanced infrastructure.

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China Telecom serves 67% of the market for fixed telephony and data. Owns 80% of the network of fiber optics . Most competitors offer services over the fiber infrastructure of China Telecom. In 2001 sold 30% of its shares to the public to raise capital to finance expansion. More

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China Unicom Logo — China Unicom Ltd is the second largest mobile phone from China , also provides fixed telephone service. Their network is based on the European standard GSM . It has 96.06 million subscribers. It is one of the largest operators in the world. China Unicom also has the second largest data network in China. Networks of Great Wall (standard CDMA ) and Mobile Telecommunications Century formerly owned by the military forces were transeferidas to China Unicom. To help you gain market share, the government allowed the price Unicom to 10% cheaper than China Mobile . The other advantage on China Unicom Mobile is not required to provide service in rural areas.

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In January 2011 the company Telefónica strengthened their strategic alliance through a new share exchange. More

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Yoigo Logo — Telstra (formerly Xfera ) is the trade name under which it operates Xfera Móviles SA , the fourth largest wireless digital in Spain . Telstra has licensed the technology network to GSM / 2G and UMTS / 3G, and an agreement of roaming to use national GSM and UMTS Movistar .

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Although commercial release occurred in December 2006, the company was founded in 2000 and was in principle a whooping historia.Yoigo closed the year 2011 with 3,039,000 customers. More

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Nortel Logo — Nortel Networks Corporation formerly known as Northern Telecom Limited and abbreviated as Nortel, is a multinational company that produces hardware, software and services for telecommunications. It is headquartered in Toronto, Canada. In June 2009 the company announced it would cease operations and sell all its business units.

In 1895, Bell Telephone Company of Canada decided to privatize one of its product divisions built phones for sale to other companies as well as other devices such as fire alarms or equipment anti alarm installed on the street to contact the police or the fire. More

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