name CTBC by Algar Telecom. In 2014, Algar Telecom won the frequency batch 5 of the 4G auction, in the range of 700 megahertz (MHz). The frequency awarded at the auction, organized by Anatel, has regional coverage and corresponds to the company's concession area, with a capacity of 10+10 MHz. Also in 2014, Algar Telecom communicated to the market the signing of an agreement with Angola Cables, Antel, and Google, in order to start the construction of a new optic fiber submarine cable that will connect Brazil to the United States. The cable will come out from Santos (SP), pass through Fortaleza (CE), and will arrive in the city of Boca Raton (Florida, USA). At the beginning of 2015, Algar Telecom selected Nokia Networks in order to launch its LTE services in the 700 MHz band and in order to modernize its 3G network – preparing the groundwork for the introduction of HD voice services in 2016. Nokia Networks signed a 5-year contract as the only supplier of Algar Telecom, in order to deliver and manage radio and core solutions, transforming the carrier's network infrastructure. In 2015, the company also acquired Optitel, an IT and Telecommunication company based in Balneário Camboriú (state of Santa Catarina), strengthening its operations and expansion in the southern region of the country. In December 2017, Grupo Algar announced the sale of 25% of its stake in Algar Telecom to the investment fund Archy, which is a subsidiary of Singapore's sovereign wealth fund GIC Private Limited. The sale is currently pending regulatory approval by Brazil's federal telecommunications regulatory agency Anatel as well as the Brazilian government's competition regulator CADE. Coverage Area Algar Telecom is nowadays present in the main regions of Brazil, with 31,000 kilometers of optic fiber serving its 1.3 million clients in the states of Goiás, Mato Grosso do Sul, Minas Gerais, Paraná, Rio de Janeiro, Rio Grande do Sul, Santa Catarina, São Paulo, and the Federal District as well. See also List of internet service providers in Brazil References Telecommunications companies of Brazil Internet service providers of Brazil Companies based in Minas Gerais Mobile phone companies of Brazil Telecommunications companies established in 1954 Brazilian companies established in 1954