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ETSI TS 122 032
M00001659
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ETSI TS 122 032 Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); LTE; Immediate Service Termination (IST); Service description; Stage 1 (3GPP TS 22.032 version 14.0.0 Release 14)
standard by European Telecommunications Standards Institute, 03/01/2017
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Full Description
ETSI TS 122 032 specifies the stage 1 description of the Immediate Service Termination (IST) service whichprovides the means for the HPLMN to terminate all the activities of an HPLMN subscriber in a VPLMN.The purpose of this network feature is to enable the HPLMN to control the activities of its subscribers, particularlywhile they are roaming. If the HPLMN decides (based upon information received via Fraud Information GatheringSystem (FIGS) or other systems) that a roaming subscriber is behaving in a fraudulent or suspicious manner, theHPLMN can terminate all activities of the subscriber, including calls (including transferred and diverted calls) that arein progress.
This procedure can also be used to terminate all the activities of a subscriber when the subscription has ended.
The primary aim is to enable service providers/network operators to use IST to reduce the amount of money that theylose because of roaming fraud.