ABSTRACT

DSLconnectsthecustomerpremisestoaserviceprovider'sCentralOffice(CO)using existingcoppertelephonelines.Whencomplicationsdon'trenderlinesineligible,DSL modemscanboostapoky56.6Kbit/secdial-upconnectiontospeedsthatmeetandsurpass 1.54Mbits/sec.However,DSL'smajordrawbackisthatavailabilityiscontingentupondistancefromtheserviceprovider'sCO.