Number of central office switches with 1,000 to 4,999 lines in the U.S. since 1996
The statistic shows the number of central office switches with 1,000 to 4,999 lines in the United States from 1990 to 2007. In 1997, there were 5,843 central office switches with 1,000 to 4,999 lines in the United States.