1.业务市场 如果说1994年智能网(IN)处于实验室测试和开发阶段,1995年IN从实验室走向现场配置,1996年则是IN走向商用的一年,许多运营公司在市场上已经有了足够多的业务并开始从业务提供中获益。图1和表1是《Communication In-ternational》月刊1996年7月公布的GPT公司对全世界IN商用情况的调查。调查表明,VPN和电话卡(Calling Card)业 1. The business market If the Intelligent Network (IN) was in the laboratory testing and development stage in 1994, IN went from the laboratory to the field configuration in 1995, and IN was the year of commercialization in 1996. Many operating companies already had the market. Enough business and start to benefit from business provision. Figure 1 and Table 1 are GPT’s surveys of IN commercial use around the world published in Communication Intenational Monthly in July 1996. Survey shows that VPN and Calling Card industry