1 Scope

33.1273GPPLawful Interception (LI) architecture and functionsRelease 18TS

The present document specifies both the architectural and functional system requirements for Lawful Interception (LI) in 3GPP networks. The present document provides an LI architecture supporting both network layer based and service layer based Interception.

National regulations determine the specific set of LI functional capabilities that are applicable to a specific 3GPP operator deployment.