CONTENTS

 1     General
 2     Service capabilities
        2.1     Channel capabilities
        2.2     Bearer capabilities
        2.3     Teleservices
 3     Interworking scenarios
 4     Connection interface requirements
        4.1     General
        4.2     MSSC-network interface
        4.3     AES-MSSC interface
        4.4     Calling procedures air-to-ground
        4.5     Calling procedures, ground-to-air
 5     Routing requirements
        5.1     Ground originated calls
        5.2     Aircraft originated calls
Appendix  I  –  INMARSAT aeronautical mobile-satellite system description
        I.1     Introduction
        I.2     System evolution
        I.3     Channel configuration
        I.4     Link layer formats and protocols
        I.5     Aircraft earth station management
        I.6     Telephone services