7 Interface between HPLMN and FDS

22.0313G Security3GPPFraud Information Gathering System (FIGS)Service descriptionStage 1TS

Information gathered by the HPLMN may be transferred to Non‑GSM systems, e.g. an FDS. These systems will decide if the monitored activity is fraudulent and will advise the home network to take appropriate action, e.g. send an IST command to the VPLMN, change the subscriber’s ODB categories.

The contents of call information messages to be transferred on this interface shall be specified but not the transfer mechanism. This is in line with the approach used for the X-interface as specified in 3GPP TS 42.033. The message formats are defined in annex A.

The system needs the ability to handle the volume of information returned to the home network.