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随着通信技术、计算机技术的不断发展，进入２０世纪９０年代以来，电信业的变化日新月异，正处在急剧的变革期。因特网改变了电话网模型，新的竞争行业不断涌现，网络基础结构成本和传输成本已越来越低。预计在本世纪初，北美等发达国家和地区的数据业务量（以ＩＰ业务为主）
With the continuous development of communication technology and computer technology, the changes in the telecommunications industry have been changing with each passing day since the 1990s. It is in a period of rapid change. The Internet has changed the telephone network model, emerging new competitive industries, network infrastructure costs and transmission costs have become lower and lower. It is estimated that at the beginning of this century, data traffic in developed countries and regions such as North America (mainly IP services)