CONTENTS

 1     General
        1.1     Scope
        1.2     References
 2     Available services
 3     System configuration
        3.1     Aeronautical satellite system
                  3.1.1     Space segments
                  3.1.2     Aircraft Earth Station (AES)
                  3.1.3     Aeronautical Ground Earth Station (GES)
                  3.1.4     Test Terminal (TT)
                  3.1.5     Network Channel Management System (NCMS)
        3.2     Interconnection with the international public switched telephone/data network
 4     General maintenance principles
 5     Lining-up and maintaining public switched telephone/data circuits
 6     Lining-up and maintaining aeronautical satellite circuits
        6.1     Control, sub-control and responsibilities
                  6.1.1     General
                  6.1.2     Assignment of control stations
                  6.1.3     Assignment of sub-control stations
                  6.1.4     Responsibilities of control and sub-control station
        6.2     Transmission characteristics
        6.3     Lining-up procedures
        6.4     Fault reporting procedures
        6.5     Maintenance procedures
 7     Maintenance organization for aeronautical satellite system
        7.1     Maintenance organization as applicable to Inmarsat
                  7.1.1     Aircraft earth station maintenance responsibility
                  7.1.2     Ground earth station maintenance responsibility
                  7.1.3     Network channel management system maintenance responsibility
                  7.1.4     Network operations centre maintenance responsibility
        7.2     Cooperation between the general maintenance organization (Recommendation M.710 [5]) and the aeronautical satellite maintenance organization