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Content for  TS 23.031  Word version:  16.0.0

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1  ScopeWord‑p. 5
This Technical Specification specifies the stage 2 description of the Fraud Information Gathering System (FIGS) feature which provides the means for the HPLMN to monitor the activities of its subscribers in a VPLMN.
Three levels of FIGS service are defined, levels 1 to 3.
Level 1 will use the facilities provided by Transferred Account Procedure (TAP).
Levels 2 and 3 will use facilities provided by Customised Applications for Mobile network Enhanced Logic (CAMEL), in particular, the information flows between the GSM Service Switching Function (gsmSSF) and GSM Service Control Function (gsmSCF). Phase 1 and Phase 2 CAMEL facilities will be used.
Connection-orientated services only are covered.
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2  Normative references

The following documents contain provisions which, through reference in this text, constitute provisions of the present document.
  • References are either specific (identified by date of publication, edition number, version number, etc.) or non specific.
  • For a specific reference, subsequent revisions do not apply.
  • For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same Release as the present document.
[1]
GSM 01.04: "Digital cellular telecommunications system (Phase 2+); Abbreviations and acronyms".
[2]
TS 22.031: "Digital cellular telecommunications system (Phase 2+); Fraud Information Gathering System (FIGS) - Stage 1".
[3]
GSM 03.78: "Digital cellular telecommunications system (Phase 2+); Customised Application for Mobile network Enhanced Logic (CAMEL Phase 1)" - stage 2; version 5.x.y". (GSM Release 96)
[4]
GSM 03.78: "Digital cellular telecommunications system (Phase 2+); Customised Application for Mobile network Enhanced Logic (CAMEL Phase 2) - stage 2; version 6.x.y". (GSM Release 97)
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3  Definitions and abbreviations

3.1  Definitions

For the purposes of this specification the following definitions apply:
A subscriber:
The calling mobile subscriber.
B subscriber:
The mobile subscriber originally called by the A subscriber.
C subscriber:
The subscriber to whom the B subscriber has requested that calls be forwarded. The C subscriber may be fixed or mobile.
Call:
connection-oriented service/event.
GSM Service Control Function (gsmSCF):
A functional entity that contains the CAMEL service logic to implement OSS. It interfaces with the gsmSSF and the HLR.
GSM Service Switching Function (gsmSSF):
A functional entity that interfaces the MSC/GMSC to the gsmSCF. The concept of the gsmSSF is derived from the IN gsmSSF, but uses different triggering mechanisms because of the nature of the mobile network.
Originating CAMEL Subscription Information (O-CSI):
The O-CSI identifies the subscriber as having originating CAMEL services.
Supplementary Service Notification CAMEL Subscription Information (SS-CSI):
The SS-CSI identifies the subscriber as having supplementary service invocation notification CAMEL services.
Terminating CAMEL Subscription Information (T-CSI):
The T-CSI identifies the subscriber as having terminating CAMEL services.
VMSC:
The serving MSC in the VPLMN.
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3.2  AbbreviationsWord‑p. 6
Abbreviations used in this specification are listed in GSM 01.04.
For the purposes of this specification the following abbreviations apply:
CAMEL
Customised Applications for Mobile network Enhanced Logic
CGI
Cell Global Identifier
FIGS
Fraud Information Gathering System
FDS
Fraud Detection System
MO
Mobile Originated
MT
Mobile Terminated
O-CSI
Originating CAMEL Subscription Information
OSS
Operator Specific Services
SS-CSI
Supplementary Service Notification CAMEL Subscription Information
T-CSI
Terminating CAMEL Subscription Information
TAP
Transferred Account Procedure
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