ADT actually started out as a telegraph company. The initials stand for American District Telegraph. Obviously, they have grown into a much more diverse and encompassing organization since that time! Up until recently they were part of the giant company, Tyco. In 2012 though, ADT split off from Tyco and is now a publicly traded company on their own accord. ADT serves customers in the security, video surveillance, and access control industries.

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ADT is based out of Florida and they have about 16,000 employees. They operate their business in 35 different countries and since entering the stock market in October of 2012, their stock has climbed 28%. In USA and Canada they are distinctly the largest security company as that is their main source of revenue. More

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Telus Logo — Telus is a leading Canadian of telecommunications, with $ 8.143 million CAD ​​in annual revenue, is the second largest in Canada after Bell Canada. Telus provides telecommunication products and services online and wireless, is the leading provider of online telephony in the province of Alberta, in most parts of British Columbia, and in eastern Quebec.

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Telus came in 1990, after the privatization of Alberta Government Telephones (AGT), until then owned by the government of Alberta. In 1995 Telus acquires EdTel, telephone service in the city of Edmonton, ending with the government presence in telecommunications in the province and continuing the process of deregulation of the telecommunications market. This deregulation also allowed other companies, such as Rogers Communications, Bell Canada, Primus Canada, and others, come to compete in Alberta, while fast emerging technologies such as mobile phones, fiber optic and Internet services that Telus did increase services. In 1996, the brand was officially implemented Telus, unifying and removing marks and EdTel AGT. More

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Bell Mobility Logo — Bell Mobility, formerly Bell Cellular is a subsidiary of Bell Canada providing services to mobile in Canada. Bell Mobility has over 6,000,000 subscribers to its cellular network at the end of the last quarter of fiscal year 2009. In July 2006, Bell took responsibility for the services of the defunct company Wireless Aliant in Atlantic Canada as part of a major restructuring of Bell and Aliant. The company continued to do business under the name Aliant until the rebranding in April 2008.

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Virgin Mobile Canada, Solo Mobile and PC Mobile uses Bell’s network as mobile virtual network Operators (ORMV). Certain subsidiaries of Bell continue to operate their own networks without son-distinct (but in general, for roaming with) Bell Mobility. These subsidiaries are Northwestel (NMI Mobility and Latitude Wireless), Télébec (Télébec Mobility) and NorthernTel (NorthernTel Mobility). More

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Vivo Logo — Vivo SA is a company of mobile telephony , fixed telephony services and broadband in Brazil . Initially formed by a merger of existing mobile phone companies in Brazil, previously was run by a joint venture of companies Telefonica and Portugal Telecom , but the former bought the latter throughout the company in the second half of 2010. A 2009 data, Vivo SA had 45.6 million customers at home. Technology uses CDMA / EVDO ,GSM / EDGE , TDMA and WCDMA / HSPA ( 3G ) in mobile phones. Since 2007 the network using AMPS networks simultaneously with TDMAand CDMA , but now is off to release the electromagnetic spectrum to deploy GSM network. It is the mobile operator largest by market share in Brazil. In the first quarter of 2012, made ​​the unification of telephony services with the services offered in the state of São Paulo (formerly “Telefonica São Paulo”) under the “Live” and is currently the only brand of telephony Telefonica Group in Brazil.

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Before unification, some companies used the technology CDMA , but in 2007, Vivid has adapted the technology GSM , which has already been implemented in all states of Brazil, and Mexico City, becoming the sole operator who works with technology CDMA , TDMA and GSM in Brazil. More

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Rogers Logo — Rogers Communications Inc. is one of the largest groups of telecommunications in Canada, particularly in the areas of mobile telephony and the Internet access, the cable television and the mass media. Edward S. Rogers is the majority shareholder of the company. Its main competitor is Bell Canada.

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Its activities are divided according to different major subsidiaries: Rogers Cable and Telecom subsidiaries are responsible for cable television, the internet and home phone, the activities of mobile phones are distributed through its three operators Rogers Wireless, Fido and Chatr, and Rogers Media manages the content part, via its various television and radio stations. More

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Belgacom Logo — The Belgacom Group is the largest of telecommunications in Belgium, based in Brussels. The Belgacom Group is mainly state-owned Belgian State owning 53.3% + 1 of the actions. The services offered by Belgacom Group include fixed by the mark Belgacom, mobile communications through the Proximus brand and services ICT aimed at the professional market under the brand name Telindus.

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In 1879, the Belgian service telegraphy installed a phone line in Parliament. The same year, some private contractors submitted bids to operate telephone networks in various Belgian cities. The lack of legislation for the first five years of operation reduced the opportunities for development of the telephone network. Also forced the Belgian government to create a legislative framework to regulate these activities in Belgium. In 1895, the sector of telephony went entirely to public hands. More

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