?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.relation=http%3A%2F%2Fmiis.maths.ox.ac.uk%2Fmiis%2F715%2F&rft.title=Dynamic+Line+Management&rft.creator=Leese%2C+R.&rft.creator=Mondal%2C+Anirban&rft.creator=Smith%2C+Warren&rft.subject=Information+and+communication+technology&rft.description=Talk+Talk+Technology+has+an+ongoing+programme+of+Dynamic+Line+Management+(DLM)%2C+aimed+at+improving+the+performance+of+ADSL+broadband+connections.+Choosing+the+most+appropriate+configuration%2C+or+%22profile%22%2C+for+an+individual+line+allows+a+balance+to+be+reached+between+achieving+a+high+line+speed+and+a+stable+customer+experience.+Among+the+objectives+of+DLM+are+to+determine+the+likely+line+speed+of+new+connections+and+to+identify+lines+that+might+benefit+from+an+updated+profile.%0D%0A%0D%0AAddressing+the+questions+raised+by+TalkTalk+regarding+DLM+requires+three+complementary+types+of+modelling%3A+physical+modelling+of+the+electrical+characteristics+of+ADSL+lines+(these+are+existing+copper+telephone+lines)%3B+information+modelling+of+the+associated+communication+channel%2C+taking+into+account+the+levels+of+noise+and+the+coding+of+ADSL+signals%3B+and+finally+statistical+modelling%2C+which+enables+data+gathered+from+the+exchange+to+be+used+to+construct+relationships+between+key+variables+and+to+identify+lines+that+might+be+faulty+or+on+poor+profiles.+The+work+of+the+Study+Group+2010+contributed+mainly+to+developing+the+statistical+modelling.+The+report+summarises+the+progress+that+was+made+and+the+opportunities+for+developing+these+techniques+further.&rft.date=2010&rft.type=Study+Group+Report&rft.type=NonPeerReviewed&rft.format=application%2Fpdf&rft.language=en&rft.identifier=http%3A%2F%2Fmiis.maths.ox.ac.uk%2Fmiis%2F715%2F1%2FESGI73-TalkTalk_CaseStudy.pdf&rft.identifier=++Leese%2C+R.+and+Mondal%2C+Anirban+and+Smith%2C+Warren++(2010)+Dynamic+Line+Management.++%5BStudy+Group+Report%5D+++++