Thedemandforhigh-speeddatanetworksinthe“lastmile”hasdriventheneedforrobust,interoperable,andeasytousemulti-vendorDigitalSubscriberLine(DSL)accesssolutions.DSLcollectivelyreferstoagroupoftechnologiesthatutilizetheunusedbandwidthintheexistingcopperaccessnetworktodeliverhigh-speeddatas