3GPP Work Item description

This page contains informal descriptive text only.  See master WID page for further details.

Building block:     Lawful Interception in the 3GPP Rel-6 architecture

The 3GPP Rel-6 architecture continues to develop IP-based services which need to be addressed by lawful interception. SA WG3-LI will study IMS phase 2, Multimedia Broadcast and Multicast Services, Priority Service, Presence Service, Subscriber Certificates, and WLAN for possible lawful interception systems. For the circuit-switched domain, the wideband adaptive multi-rate codec (AMR-WB) will be investigated.

The enhancements to specification TS 33.108 address the additional work to specify the HI2 (Intercepted Related Information) and the HI3 (Content) interfaces for packet data, circuit-switched and IMS delivery to the law enforcement monitoring facilities. In the first step (Rel-5) the 3G packet domain and phase 1 multi-media domain were addressed. HI1 (Administration) is not covered by this work item and is considered to be a matter of national regulation.

Work to be led by S3.