根据美国InternationalData Corporation的调查,综合通信市场发展迅猛,基于IP的PBX(专用分组交换机)的扩大、服务的可靠性、可测量性的提高等推动了市场的发展,同时用户人数也将从1999年的100万人增加到2004年的3800万人。 According to a survey conducted by the InternationalData Corporation in the United States, the market for integrated communications has grown rapidly, the expansion of IP-based PBXs (private branch exchange), the reliability of services, and the improvement of measurability have promoted the development of the market. At the same time, the number of users will also increase from 1999 Of the 100 million people increased to 38 million in 2004.