Lawful interception of information in IP multimedia communication subsystems

- , IP ' (Release 5) (3GPP) IP ' IMS (IP multimedia subsystem). IMS, IP (internet protocol), . , ' 4G LTE (Long term evolution), 5G, WLAN (Wireless local access network) . IMS IP-, ' PSTN (Public switched telephone network) / ISDN (Integrated services digital network) ' GSM (Global system for mobility), UMTS (Universal mobile telecommunications systems) . , Voice (VoNR, VoLTE, VoWiFi ), , , (multiparty gaming) . IMS , ' 3G, 4G 5G, . IMS '. IMS, . 1, ETSI TS 123 002 [1], , ' . ETSI TS 123 002 [1] IMS: 1) P/S/I/E-CSCF (proxy/serving/interrogating/emergency call session control function) -SIP, SIP '; 2) IMS-AGW (IMS access gateway) - IMS, IMS- , 3G, 4G, 5G, ; . ., . ., 2025 IP ' . , . , . , IP ' .