Accounting rate principles for the international telephone service; SERIES D: GENERAL TARIFF PRINCIPLES General tariff principles Charging and accounting in the international telephone service; Supplement 3: Updated teledensities and indicative target set
The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications. The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of ITU. ITU-T is responsible for studying technical,