CONTENTS

 1     Scope
 2     References
 3     Definitions
 4     Abbreviations
 5     Description
 6     Operational requirements
        6.1     Provision and withdrawal
        6.2     Requirements at the originating network side
        6.3     Requirements at the terminating network side
 7     Primitive and state definitions
        7.1     Primitive definitions
        7.2     Call states
 8     Coding requirements
        8.1     Messages
        8.2     Information elements
 9     Signalling procedures at the coincident S_B and T_B reference point
        9.1     Connection establishment at the originating interface
        9.2     Call/connection establishment at the destination interface
        9.3     Handling of specific error conditions
10     Signalling procedures at the T_B reference point for interworking with private B‑ISDNs
11     Interworking with other networks
       11.1     Interaction with entities which do not support the ABT transfer capability
       11.2     Interworking with N-ISDN
12     Interactions with supplementary services
13     Timers
14     Dynamic description (SDLs)
Annex A  –  Valid combinations of traffic-related parameters for the support of ABT transfer capabilities
Appendix I  –  Guidelines for the setting of the instruction indicators