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一、ＶｏＩＰ的由来和涵义 ２０世纪９０年代中期是通信事业发展的关键转折时期。其起因是由于全球性“因特网（Ｉｎｔｅｒｎｅｔ）”向广大计算机用户公开开放应用，由此引起国际上数据通信业务爆炸性快速增长。估计进入２１ 世纪后，数据业务必将跃居为最主要的通信业务，超
First, the origin and meaning of VoIP The mid-90s of the 20th century is a crucial turning point in the development of communications. The reason is due to the global “Internet” to the vast number of computer users open and open applications, which led to the explosive growth of international data communications business. Estimated to enter the 21st century, the data business will certainly leapt to the most important communications business, ultra