Tag

telecommunication

2 datasets
  • Wire Centers, Area Code and Exchanges USA & Canada, (NPA/NXX)

    Offsite — As of April 1999, there were 105,291 NPA/NXX’s (area code plus exchanges) registered for use in the USA and Canada. These prefixes are served by “central offices” located at some 24644 “wire centers”. It is at these wire centers that “local loops” to customers are terminated and branch circuits to other offices originate. This map shows the distribution of wire centers ...
  • World Telecommunication/ITC Indicators Public Metrics

    Free Download — From the International Telecommunication Union (ITU), a United Nations (UN) agency http://www.itu.int/ITU-D/icteye/Indicators/Indicators.aspx In the process of consolidating the 44 Excel files provided, I found some data points repeated with different values. The two cases of different values were: one was less precise, or one was left blank. Only the more precise and ...