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Railtel Corporation of India is a Miniratna enterprise of Government of India focusing on providing broadband and VPN services. RailTel was formed in September 2000 with the objective of creating nationwide broadband, telecom and multimedia network, to modernize Train Control Operation and Safety System of Indian Railways. RailTel's network passes through around 5,000 stations across the country, covering all central business districts, towns, cities, mini/major-metros. RailTel has created state of the art multimedia telecom network using SDH/DWDM-based transmission systems and high end routers for MPLS-IP network. Indian Railways have seamless right-of-way along 63,000 km of rail tracks passing through 7000 stations across the country. The stations in major cities are located in central business districts. Indian Railways already had established a strong Telecom Network to meet its communication requirements. With the formation of Corporation, Indian Railways' right-of-way and OFC assets have been transferred to RailTel. About 32500 km of OFC has been laid and over 29500 km has been commissioned. Works on another 10620 km are in various stage of completion. RailTel holds the following licenses using which it is offering various services across India: National Long Distance: :Class "A" ISP (with Internet Telephony) :IP-II :IP-I ==Backbone== RailTel has rolled out a transparent, robust, reliable, high speed OFC Backbone Network covering about 32000 km now and ultimately covering 45,000 km across the country by 2010. Over 3200 cities and towns have been connected on the network. The backbone networks have been configured in multiple 'self healing' rings consisting of more than large no. of rings and linear sections, which provide for redundancy by automatically redirecting traffic away from failed/ de-graded route for fault-free service. The long haul network of RailTel is on STM-16 which has already been upgraded to 100 G DWDM which can be further augmented up to 400 Gbit/s. 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「Railtel Corporation of India is a Miniratna enterprise of Government of India focusing on providing broadband and VPN services. RailTel was formed in September 2000 with the objective of creating nationwide broadband, telecom and multimedia network, to modernize Train Control Operation and Safety System of Indian Railways. RailTel's network passes through around 5,000 stations across the country, covering all central business districts, towns, cities, mini/major-metros.RailTel has created state of the art multimedia telecom network using SDH/DWDM-based transmission systems and high end routers for MPLS-IP network. Indian Railways have seamless right-of-way along 63,000 km of rail tracks passing through 7000 stations across the country. The stations in major cities are located in central business districts. Indian Railways already had established a strong Telecom Network to meet its communication requirements. With the formation of Corporation, Indian Railways' right-of-way and OFC assets have been transferred to RailTel. About 32500 km of OFC has been laid and over 29500 km has been commissioned. Works on another 10620 km are in various stage of completion.RailTel holds the following licenses using which it is offering various services across India:National Long Distance::Class "A" ISP (with Internet Telephony) :IP-II :IP-I==Backbone==RailTel has rolled out a transparent, robust, reliable, high speed OFC Backbone Network covering about 32000 km now and ultimately covering 45,000 km across the country by 2010. Over 3200 cities and towns have been connected on the network.The backbone networks have been configured in multiple 'self healing' rings consisting of more than large no. of rings and linear sections, which provide for redundancy by automatically redirecting traffic away from failed/ de-graded route for fault-free service.The long haul network of RailTel is on STM-16 which has already been upgraded to 100 G DWDM which can be further augmented up to 400 Gbit/s.」の詳細全文を読む スポンサード リンク
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