1[1]美国教育数据中心(NCES).Internet Access in U.S.Public Schools and Classrooms:1994-2000[R].2.
2[18]英文名称为"Competitive Neutrality",这里的意思是"universal service support mechanisms and rules neither unfairly advantage nor disadvantage one provider over another, and neither unfairly favor nor disfavor one technology over another". 通过这个原则, 将"to facilitate a market- based process whereby each user comes to be served by the most efficient technology and carrier".
4[21]这8个服务是"single - party service; voice grade access to the public switched network; DTMF signaling or its functional equivalent; access to emergency services; access to operator services; access to interexchange service; access to directory assistance; and toll limitation services for qualifying low- income consumers".
5[22]几个影响因素主要有"subscribershiplevel,local calling area,consumerincomelevels,cost of living and population density,legitimate local variations in rate design"等.
6Kim[美].Looking for a 3-Tier App Builderr[M].1999.
