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Nextgen Networks is an Australian communications company which is owned by Ontario Teachers' Pension Plan (70%) and Leighton Holdings (30%), one of Australia's major companies. Nextgen's Network is based on a geographically protected national network, with the Brisbane to Melbourne link utilising self-healing SDH two-fibre ring architecture. The Ring System covers Brisbane, Sydney, Canberra and Melbourne and a Flat Ring Link through to Adelaide and Perth as well as covering 70 major and regional population centres along the route. The Network covers a total of 8,500 km. ==History== The Network was constructed in 2002 and cost around $850 million to construct as a Joint Venture of Leighton Contractors ($140m) and Macquarie Bank using state of the art equipment from suppliers such as Lucent and financed by a consortium including Leighton Holdings, Macquarie Bank, National Australia Bank, Deutsche Bank, UBS Capital and WestLB. Visionstream (another subsidiary of Leightons) constructed the Network consisting of four network loops each with 12 fibre pairs, with each fibre pair capable of 800Gbit/s. The network owners intention was to provide the highest network quality, which led to the use of using many state of the art technologies (at the time). Lucent supplied the TrueWave RS G655 Fibre developed by Bell Labs to provide high bandwidth capacity and specially designed for long distance DWDM optical cables. Being a Non-zero dispersion shifted fibre it has minimum light dispersion, allowing signals to travel long distances with enough dispersion to prevent crosstalk from adjacent signals. It was built to Australian conditions to prevent against not only rodents but wombats, christmas tree roots and erosion from black soil.〔(Wombat-proof Nextgen cable touches down )〕 Lucent also supplied newest technology WaveStar OLS 400G DWDM systems and WaveStar Bandwidth Manager. Nettest's QUESTfiber technology supplied the remote fibre test system (the largest network of its type in the Australia Pacific region) within the Nextgen Networks DWDM network. This gives the benefit of a fully managed network backbone with minimal downtime, when a fault is detected the location is known to within a few metres, as well as showing the health of the cables and its segments, allowing for preemptive maintenance where cable is showing signs of distress.〔(Network Monitoring )〕 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「Nextgen Networks」の詳細全文を読む スポンサード リンク
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