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光纖接入網(wǎng)技術(shù)英文文獻(xiàn)翻譯(編輯修改稿)

2026-06-27 04:23 本頁面

　

【文章內(nèi)容簡(jiǎn)介】 idth needs. SHDSL, HDSL can provide users with broadband data line, these two kinds of digital subscriber loop in special circumstances, the technical solution to the problem of providing data line. VDSL technology is with ADSL) the development and popularization of and gradually moving towards the mercial, but because it can support distance is short, at present its popularity still far less ADSL. FTTX technology In all sorts of broadband access network technology, optical SDH technology adopted the access network system is applied the most mon. SDH technology application in access network has already widespread, but still just FTTC (optical fiber to the side of the road), FTTB (fiber to the floor), the huge bandwidth optical fiber level still no to household. Therefore, to really provide broadband business ability, just using SDH technology solve feeder, wiring, paragraph of the broadband is not enough, still need to introduce line in part by broadband access technology bined. Can FTTB/C + used respectively FTTB/C + xDSL, Cable Modem, FTTB/C + localarea network (LAN) access methods such as resident and pany respectively, enterprise users to provide business. Among them the way FTTX + LAN FTTLAN is called again, in this way our Shanghai, Beijing and other developed city new district has been widely used. The final is FTTH access development goals, but because the cost, the user needs and market and other reasons, FTTH is still a longterm task. Access the latest development direction with SDH support for IP business is, is to develop a business network platform for MSTP/RPR) (. FTTX MSTP/RPR and bining with business realized width prehensive transfer. (more) bus size take integrated business access network Optical fiber access from the preliminary narrowband integrated service access to prehensive business access with width of the development process, had two ideas: a view by unified IP business platform realize voice and data services integrated access。 Another argument is because Everything over IP technology in be used actually are still exist many problems, when in to realize prehensive access or let narrowband service (circuit switching methods) and broadband business (packet switching mode) respectively take different channels. The former realization ways can the soft exchange to do help, then a realization way by current is most mainstream solutions double (more) bus integrated service access network. In 1999, he launched a double before and after the prehensive access network equipment bus model. Some manufacturers provide bus types according to the backboard, and puts forward four buses parlance, including: management bus, TDM business bus, group business bus, general bus. General bus is to expand business ability, or to support now still unforeseeable some business and reserved. Due to its specific also unable to estimate the design parameters usually be categorized as one of the first three bus. Management bus is to realize the management of the whole system is designed for the Lord, because the bus ability to support business types is more and more abundant, need management information more and more, now also many USES highspeed management bus bus. This socalled dual bus, is providing the equipment backplane of the two businesses bus, namely TDM bus and packet bus. Most of the developed countries access equipment is dual bus structure. International technical development direction, adopt the most advanced system structure, launched with IP for the kernel, builtin MSTP double bus type prehensive access network equipment. Can foresee dual bus integrated access network is the development direction of access in the ing years, each big access network equipment manufacturers will strive for in this huge market petitive advantage, to reestablish throughout the status of optical fiber access product market. 5. Access network support business Voice class business: SPC telephone new business, magnetic card phone business, etc class business: DDN business, packet switching, etc Image munication class business: meeting TV business, videophone business, etc Multimedia business: home office, shopping, VOD, remote medical treatment, etc development direction of future optical fiber access Broadband is changed and prehensivized Broadband access is market development trends, fiber inhome will be broadband access inevitable. XDSL, dual bus integrated access as the transition plete fibre

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