DSL Technology :: Technology Computers Internet Essays

DSL engineering science Introduction The accelerated growth of content rich applications and online gaming, which demand superior bandwidth, has changed the nature of information networks. High-speed communication is now an ordinary requisite throughout business, government, academic, and home office environments. Internet get at, telecommuting, and remote LAN plan of attack are three of the clearly defined serve wells that network access providers are offering now. These rapidly growing applications are placing a forward-looking level of demand on the name infrastructure. In particular, the local enlace portion of the network (i.e., the local connection from the subscriber to the local commutation office) has become a challenge for telephone companies. Historically, this local loop induction has been provisioned with blur cabling which cannot easily support high bandwidth transmission. This environment is now be stressed by the demand for increasingly higher bandwidth ca pacities. Although this infrastructure could be replaced by a massive rollout of fiber technologies, the cost to do so would be insupportable in nows business models and, more importantly, the time to get through such a transition is unacceptable because the market demand exists today Telephone companies are already faced with growing competition and strange customer demands A new category of companies, Internet Service Providers (ISPs), has emerged in this market as providers of data services. Traditionally ISPs have used the telephone company infrastructure. However, thanks to deregulation, they now have direct access to the visible cable plant. ISPs will be formidable competitors in this quest for the customers. mesh topology service providers around the world fill this moment with great potentiality for remarkable success. A new technology called high-speed Digital endorser Line (xDSL) has emerged onto this scene. xDSL, which encompasses several different technologies, es sentially allows the extension of megabit bandwidth capacities from the service provider central office to the customer premises on a customer by customer basis over the existing copper cabling, without the need for massive infrastructure replacement and at very sane costs. These new xDSL solutions satisfy the business need to provision the network in a fast, cost effective manner, while preserving the infrastructure and allowing a plotted migration into newer technologies. xDSL has the ability to meet the customer demand for high bandwidth right now, at costs that make sense. xDSL is a group of emerging Digital lector Line (DSL) modem technologies for supporting high-rate traffic transmission over POTS lines. X stands for asymmetric in ADSL, rate adaptive in RADSL, high-speed in HDSL, and very high speed in VDSL.