In twentieth annual joint conference of the ieee computer and communications societies infocom 2001 , anchorage , alaska , april 2001 , 2 : 943 - 952 . 10 corcoubetis c , siris v . managing and pricing service level agreements for differentiated services . in proc 因此，如果业务计划给用户的业务或业务应用定义的业务类和业务量工程给每一个业务类定义的路由能够被用户评估为最优， isp的业务才容易被用户选中，它才能吸引更多的用户。
