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MethodologyTargetsNetworksPSTN & Mobile NW – Lawful Interception(Voice and IP)LI – (Voice + IP) LI – (Voice +IP)PSTNMobileData Capturing:In both Networks (PSTN and Mobile) data capturing is performedinside the NW10using NW-vendor specific solutions (assuming the NW-vendor isproviding suchkind of solutions). This applies for both Voice (voice, modem, fax) and IPdata.Target Identif.:This is also part of the NW-LI-functions.MediationFront-EndBack-EndAdminReceivingDecodeDemodStorageArchivingAnalysisEvaluationHI3 –CCISDNISDNS2mHI3 – CCVoiceRecorderVOICEHI1MarkingTargetsPSTNInterceptionMgmt.HI2 – IRIX.25, TCP/IP,X.31FTAM, FTP,RoseEth/X.25HI2 – IRIReceiverIRIMediationMobileHI3 –CCISDNHI3 – CCEthTCP/IPEth??? ModulesHI2 – IRIReceiverHI3 – CCVoiceRecorderHI3 – CC??? ModuleIPISDNS2mHI2 – IRIX.25, TCP/IP,X.31FTAM, FTP,RoseEth/X.25VOICEDATA WAREHOUSEHI1MarkingTargetsMobileInterceptionMgmt.IRIUsers / Evaluator / OperatorsAdmin: Also the Admin-Function of the NW is part of the NW-environment.SubscribersMgmt.or as(fixed / mobile) will be marked for LI inside the NW. The InterceptionSystems (PSTN/Mobile) also provide the IRI-data (either ASN.1 encodedASCII-files). Assigning a LIID is part of this admin process and it has torefer to theLIID used in the Monitoring Center for admin the LI-warrant.Data HandoverCC-Voice:(PCM30, A-lawVoice data will be transferred via ISDN (S2m) to the Back-Endencoded) from the switches of the NW.IRI: IRI-Record can be either FTAM, FTP or Rose on X.25/X.31 or TCP/IPprovided viaCC-IPthe NW-LI-Management System(s).= Mediation: IP-data from GPRS/UMTS will be mediated using DreamlabsMediationAppliance to provide i.e. ETSI-formated data to the Back-End.Receiving Data:Receiving CC-Voice and IRI-Records will made own/separateAppliancesin thenecessary. IP-Data from GPRS/UMTS via DL Mediation have to be handled

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