CONTENTS

 1     Scope
 2     References
 3     Abbreviations
 4     Reference model
        4.1     Protocol stack model
        4.2     System model
 5     DVB interaction channel specification for GSM
        5.1     Physical interfaces
                  5.1.1     External MS
                  5.1.2     Integrated MS
        5.2     Calling procedures
        5.3     Forced disconnection
Appendix I – Basic characteristics of GSM
        I.1     GSM, general
        I.2     Future GSM data services
Apendix II – Interworking types
       II.1     Interworking to PSTN
       II.2     Interworking to ISDN