ITU-T D.186 SPANISH-1996
国际卫星双向多点通信业务的一般资费原则和计费原则.系列D:一般资费原则.国际卫星业务的收费和结算
General Tariff and Accounting Principles for International Two-Way Multipoint Telecommunication Service Via Satellite - Series D: General Tariff Principles General Tariff Principles - Charging and Accounting for International Satellite Services Study Grou