3 Definitions and abbreviations

22.0323GPPImmediate Service Termination (IST)Release 17Service descriptionStage 1TS

3.1 Definitions

For the purposes of this specification the following definitions apply:

subscriber activities: subscriber activities that must be terminated. These can be call related events (e.g. call set-up, call termination) or the invocation of call related and call independent supplementary services (e.g. Call Hold, Call Waiting, Call Transfer, Call Forwarding, Unstructured Supplementary Service Data (USSD)).

3.2 Abbreviations

For the purposes of the present document, the abbreviations given in TR 21.905 [1] and the following abbreviations apply:

IST Immediate Service Termination

FIGS Fraud Information Gathering System