1987年,世界电话号码簿新增号码2千2百万个。全世界电话号码总数为4亿5千4百万个(主机),比1986年增长5%。世界电话(主机)数量居世界前列的国家有美国(1.27亿)、日本(5千万)、苏联(2千8百万)和西德(2千8百万)。下表是1989年西门子公司对世界电话的统计数据。表中列出了在年人均电话呼叫次数、国际电话次数、百人电话普及率等几方面居世界前列的国家。据统计,欧洲和北美洲电话 In 1987, the number added to the World Directory was 22 million. The total number of worldwide telephone numbers was 454 million (hosts), an increase of 5% over 1986. The United States (127 million), Japan (50 million), the Soviet Union (28 million) and West Germany (28 million) are among the highest in the world in number of phones (hosts) in the world. The following table is the 1989 Siemens statistics of the world phone. The table lists the top performers in terms of the number of annual telephone calls per person, the number of international calls, and the penetration rate of one hundred telephone lines. According to statistics, Europe and North America phone