Lawful Interception for Mobile


As with all communications networks, mobile network operators may be required to provide Lawful Interception capabilities for authorized law enforcement agencies. The fact that mobile users may be anywhere in the world means that, in addition to technical considerations, region and international interception regulations have also to be respected.

The work of the 3rd Generation Partnership Project (3GPP™) and the complementary work of ETSI on Lawful Interception is confined to technical matters.

3GPPTM Technical Specification TS 33.106 defines the interception requirements for 3rd Generation mobile network based on 3GPPTM specifications, and GSMTM 01.33 provides the corresponding information for GSM networks.


The following is a list of recently published and frequently downloaded standards. Please use the ETSI standards search to find further related standards in the public domain or to subscribe for alerts on updates of ETSI standards/specifications.
For work in progress see the ETSI Work Programme on the Portal.

Standard No.Standard Title
TS 133 106 Universal Mobile Telecommunications System (UMTSTM);
Lawful interception requirements
TS 133 107 Universal Mobile Telecommunications System (UMTSTM);
3G security; Lawful interception architecture and functions
TS 133 108 Universal Mobile Telecommunications System (UMTSTM);
3G security; Handover interface for Lawful Interception (LI)
TR 101 514 Digital cellular telecommunications system (Phase 2+);
Lawful interception requirements for GSM