scope:

The present document provides Stage 1 interception requirements within a 3GPP network.

The specification describes the service requirements from a Law Enforcement point of view only. The aim of this document is to define an interception system for 3GPP networks that supports a number of regional interception regulations, but these regulations are not repeated here as they vary. Regional interception requirements shall rely on this specification to derive such information as they require.

Lawful interception services may include both passive collection of information related to PLMN services provided to a user targeted for interception and active PLMN service invocation in support of lawfully authorized surveillance activities relating to a particular target. This specification considers requirements for both forms of lawful interception. Which PLMN services are subject to lawful interception is defined in national regulations.

Editor"s Note: Scope needs to be enhanced more clearly differentiate between traditional 3GPP service usage reporting and wider LI requirements covered national lawful interception obligations.

Editor"s Note: Scope needs to explain that the presence of an LEA requirement in 106 does not in itself infer that CSPs have an obligation to implement network service capabilities which were not otherwise required to provide basic user services unless specifically manadated by national law.

These interception requirements shall be used to derive specific network requirements.

For details see:

Stage 2: 3GPP TS 33.107 [9];

Stage 3: 3GPP TS 33.108 [10].