想像一个城市的供水系统因为水管不够长而不能将水输往大楼和居民区,这样的情况同样在美国的高速数据传输网络中出现。为办公室和家庭电脑提供真正高效多媒体服务而花费几十亿美元建造贯通整个国家的光纤主干短了一点,因为在超过百人以上的美国企业中十个就有九个位干距主干 Imagine a city’s water system, which can not transport water to buildings and neighborhoods because its pipes are not long enough, and the same is true of high-speed data transmission networks in the United States. Spending billions of dollars on building fiber-optic backbone throughout the country for a truly efficient multimedia service for office and home computers is a bit shorter as nine of the ten U.S. companies with more than 100 people have dry-to-dry trunks