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美国ＡＴ＆Ｔ的２０００年附加计划──从智能网向知识网的转化ＡＴ＆Ｔ的２０００年附加计划（Ｐｌａｎ２０００Ｐｌｕｓ），是一个专门为未来提供新的电信业务设计、开发和准备的多年项目规划，该计划时间跨度从１９９０年到２０００年。实际上，这一计划已描绘出了下一...
AT & T 2000 Supplementary Program, USA - From Intelligent Network to Knowledge Network AT & T’s 2000 Supplementary Program (Plan2000Plus) is a multi-year project plan designed, developed and prepared for the future with new telecommunication services. Span from 1990 to 2000. In fact, this plan has drawn the next ...