name: HI3
full_form: Handover Interface Port 3 (for Content of Communication)
context: reason why the -- intercepted call cannot be established or why the intercepted call has been -- released after the active phase. nature-Of-The-intercepted-call [12] ENUMERATED { --Not required for UMTS. May be included for backwards compatibility to GSM --Nature of the intercepted "call": gSM-ISDN-PSTN-circuit-call(0), -- the possible UUS content is sent through the HI2 or HI3 "data" interface -- the possible call content call is established through the HI3 âcircuitâ interface gSM-SMS-Message(1), -- the SMS content is sent through the HI2 or HI3 "data" interface uUS4-Messages(2), -- the UUS content is sent through the HI2 or HI3 "data" interface tETRA-circuit-call(3), -- the possible call content call is established through the HI3 "circuit" interface -- the possible data are sent through the HI3 "data" interface teTRA-Packet-Data(4), -- the data are sent through the HI3 "data" interface gPRS-Packet-Data(5), -- the data are sent through the HI3 "data" interface ... } OPTIONAL,
description: The Handover Interface Port 3 (HI3) is a standardized interface in the 3GPP specification, used for the exchange of intercepted communication content between Lawful Interception (LI) systems and network operators. It enables the transfer of call content, SMS messages, and other data through either 'circuit' or 'data' interfaces.
explanation: HI3 is classified as an Interface because it defines a point of connection and data exchange between different systems (LI systems and network operators) within a telecommunications network.
section_title: B.3a	Interception related information (HI2 CS)
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