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| Q1/3 | Development of charging and accounting/settlement mechanisms for international telecommunications services using the Next Generation Networks (NGNs) and any possible future development, including adaptation of existing D-series Recommendations to the evolving user needs |
| Q2/3 | Development of charging and accounting/settlement mechanisms for international telecommunications services, other than those studied in Question 1/3, including adaptation of existing D-series Recommendations to the evolving user needs |
| Q3/3 | Study of economic and policy factors relevant to the efficient provision of international telecommunication services |
| SG3RG-AFR | Study Group 3 Regional Group for Africa |
| SG3RG-AO | Study Group 3 Regional Group for Asia and Oceania |
| SG3RG-LAC | Study Group 3 Regional Group for Latin America and the Caribbean |
| Q4/3 | Regional studies for the development of cost models together with related economic and policy issues |
| Q5/3 | Terms and definitions for Recommendations dealing with tariff and accounting principles |