Aeronautical mobile-satellite (OR)°° service (short: AMS(R)S; | also: ''aeronautical mobile-satellite (R) radiocommunication service'') is – according to ''Article 1.37'' of the International Telecommunication Union's (ITU)

Radio Regulations Radio regulation refers to the regulation and licensing of radio in international law, by individual governments, and by municipalities. International regulation The International Telecommunication Union (ITU) is a specialized agency of the Unit ...

(RR) – defined as «''An aeronautical mobile-satellite service reserved for communications relating to safety and regularity of flights, primarily outside national or international civil

air route The atmosphere of Earth is the layer of gases, known collectively as air, retained by Earth's gravity that surrounds the planet and forms its planetary atmosphere. The atmosphere of Earth protects life on Earth by creating pressure allowing for ...

s''.» ;See also:

Classification

This ''radiocommunication service'' is classified in accordance with ''ITU Radio Regulations'' (article 1) as follows:
Mobile service (article 1.24) * Aeronautical mobile service (article 1.32) ** Aeronautical mobile-satellite service (article 1.35) *** Aeronautical mobile-satellite (R)° service (article 1.36) ***Aeronautical mobile-satellite (OR)°° service (article 1.37) (R)° – abbreviation to route flights (route)
(OR)°° – abbreviation to flights others than on routes (off-route)

Frequency allocation

The allocation of radio frequencies is provided according to ''Article 5'' of the ITU Radio Regulations (edition 2012).''ITU Radio Regulations, CHAPTER II – Frequencies, ARTICLE 5 Frequency allocations, Section IV – Table of Frequency Allocations'' In order to improve harmonisation in spectrum utilisation, the majority of service-allocations stipulated in this document were incorporated in national Tables of Frequency Allocations and Utilisations which is with-in the responsibility of the appropriate national administration. The allocation might be primary, secondary, exclusive, and shared. *primary allocation: is indicated by writing in capital letters *secondary allocation: is indicated by small letters *exclusive or shared utilization: is within the responsibility of administrations

References / sources

International Telecommunication Union (ITU)
Mobile services ITU Airbands Air traffic control {{radio-comm-stub