INTERNATIONAL TELECOMMUNICATION UNION ITU-T RECOMMENDATION SUMMARY Rec. No. : D.94 Title : Charging, billing and accounting principles for international aeronautical mobile service, and international aeronautical mobile-satellite service Study Group : III - Tariff and Accounting Principles Version : New Date of adoption : 1992 Notes : Recommendation D.94 sets out the charging, billing and accounting principles between the service provider and the customer. There are two basic public aeronautical services: aeronautical mobile-satellite services (AMSS) and aeronautical mobile services (AMS) (direct air/ground). There are four types of aeronautical communication: aeronautical public correspondence (APC), i.e. passenger voice and data services; air traffic services (ATS), i.e. cockpit communications with the major element being air traffic control; aeronautical operation control (AOC), i.e. communications required for the exercise of authority over the initiation, diversion or termination of a flight in the interest of the safety of the aircraft and the regularity and efficiency of a flight; aeronautical administrative communications (AAC), i.e. non-safety business of the aircraft operator. As a general principle of aeronautical charging and accounting, it should not normally be necessary to identify the nationality of the calling passenger or the nationality/nationalities of the airspace occupied by the aircraft during the calls. There are four categories of customer: passenger, commercial airline, private aircraft including military/government, resellers. Recommendation D.94 sets out the charging billing and accounting principles applicable to those communications. To order the complete text of this Recommendation, please use the Order Form for ITU-T Recommendations. An electronic version of this form is available on ITUDOC (Winword: UPI=ITU-5265; ASCII: UPI=ITU-2488).