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The accelerated growth of content rich applications and online gaming which demand high bandwidth has changed the nature of information networks High-speed communication is now an ordinary requirement throughout business government academic and home office environments Internet access telecommuting and remote LAN access are three of the clearly defined services that network access providers are offering now These rapidly growing applications are placing a new level of demand on the telephone infrastructure In particular the local loop portion of the network ie the local connection from the subscriber to the local central office has become a challenge for telephone companies Historically this local loop facility has been provisioned with copper cabling which cannot easily support high bandwidth transmission This environment is now being stressed by the demand for increasingly higher bandwidth capacities Although this infrastructure could be replaced by a massive rollout of fiber technologies the cost to do so would be insupportable in todays business models and more importantly the time to accomplish such a transition is unacceptable because the market demand exists today Telephone companies are already faced with growing competition and unprecedented 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 physical cable plant ISPs will be formidable competitors in this quest for the customers Network service providers around the world fill this moment with great potential for remarkable success A new technology called high-speed Digital Subscriber Line xDSL has emerged onto this scene xDSL which encompasses several different technologies essentially 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 reasonable costs These new xDSL solutions satisfy the business need to provision
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