ITU-T D.12-1989 Measurement Unit for Charging by Volume in the International Packet-Switched Data Communication Service - General Tariff Principles - Charging and Accounting in International Telecommunications Services (Study Group III) 2 pp
that it would be desirable to establish certain guiding principles to govern the apportionment of
accounting rates in international relations;
ITU-T D.12-1989 history
1989ITU-T D.12-1989 Measurement Unit for Charging by Volume in the International Packet-Switched Data Communication Service - General Tariff Principles - Charging and Accounting in International Telecommunications Services (Study Group III) 2 pp