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SAex (South Atlantic Express) is a proposed submarine communications cable linking South Africa to Brazil with branches to Namibia and Saint Helena. The project was announced in 2011 by eFive Telecoms (Pty) Ltd, who led the project during the early feasibility studies. In November 2013 South Atlantic Express Cable Company (Pty) Ltd took over responsibility and was renamed to SimplCom South Africa (Pty) Ltd after SimplCom Inc. (Canada) acquired a controlling shareholding in the former.〔 In April, 2011 the Bank of China announced that it was interested in investing 60% of the funds required for the project while the Industrial Development Corporation of South Africa also had expessed interest in providing funding. As of May 2014 the project had funding interest from numerous private and public financial institutions.〔 In June 2011 the project was expected to cost R3 billion to complete. A revised configuration (cable branch to Namibia instead of Angola and additional branch to Saint Helena and four instead of three fibre pairs), technological improvements and lower costs of technology are expected to reduce the projected capacity prices of the original design.〔 ==Overview== SAEx is conceived as a system to link the developing economies of Southern Africa and South America independently of traditional hubs and so to contribute to a link between BRICS economic regions without recourse to traditional northern hemisphere hubs. It will also form a sub-sea route from Indian Ocean network nodes in the Gulf region, India and Eastern Asia to South America and the USA while avoiding geological and geopolitical hazards present on other paths, such as the oceanic trenches of the Pacific Ocean, the Red Sea, the Suez Canal and the Mediterranean Sea and transits through potentially unstable countries and unreliable overland transit networks. Currently, internet traffic bounded from South Africa to the Americas routes through Europe. The SAex cable if constructed, will reduce latency and bandwidth costs associated with the distance that internet traffic currently has to travel by providing the shortest route possible from South Africa to the Americas. The initial design capacity of the cable is 40 TBit/s and will be over 10,000 kilometres in length (7,400 km from South Africa to Brazil and 3,000 km from Cape Town to Mtunzini). It will consist of four fibre pairs, each capable of carrying 10 TBit/s of data using 100 GBit/s wavelength technology.〔 The branch to Namibia will stretch over 1,050 km while that to Saint Helena will have a length of less than 50 km. According to a memorandum of understanding closed in April 2010 Main One and SEACOM will interconnect their cables with SAex and so form a pan-African fibre-optic ring. Through SEACOM the cable could also supply India with bandwidth towards the Americas by onward connectivity to the United States through the existing GlobeNet cable system. At Yzerfontein SAEx would be able to interconnect to WACS while at Mtunzini SAFE, EASSy and SEACOM could provide onward connectivity to Asia, East Africa and India.〔 The cable system is expected to be operational in 2017 (originally in mid-2014).〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「SAex」の詳細全文を読む スポンサード リンク
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