论文部分内容阅读
空分PBX,基于4000Hz以下话音模拟信号电路交换技术,适用以交换电话和1200bps以下数据信息,系统容量多在500线以下,服务功能较少,应用上局限性很大。从技术发展和市场需求上看,空分PBX已是一种行将被淘汰的产品。如上面市场需求变化一览图表所示,空分PBX自1993年创下177万线年销售量之后,市场需求江河日下,预计2000年之前终将被数字PBX逐出市场。但由于空分PBX特别低廉的
Air separation PBX, based on 4000Hz voice analog signal circuit switching technology for exchange of telephone and 1200bps the following data, the system capacity of more than 500 lines, less service features, the application of great limitations. From the technical development and market demand point of view, air separation PBX is a product that will be eliminated. As shown in the chart above, the market demand for air-separated PBXs is expected to be pushed out of the market by 2000 by the end of 2000 after market demand has hit 1.77 million annual sales in 1993. But due to air separation PBX is particularly low