3 Definitions and abbreviations
03.353GPPImmediate Service Termination (IST)Stage 2TS
3.1 Definitions
For the purposes of the present document, the following definition 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 is GSM 01.04 and the following apply:
FDS Fraud Detection System
FIGS Fraud Information Gathering System
IST Immediate Service Termination
MO Mobile Originated
MT Mobile Terminated
O-CSI Originating CAMEL Subscription Information
T-CSI Terminating CAMEL Subscription Information