Lawful interception requires functions to be provided to a Law Enforcement Agency in some, or all of, the switching or routing nodes of a telecommunications network.

The ETSI Lawful Interception standard focuses on the handover interface related to the provision of information related to LI between a network operator, access provider and/or service provider and a Law Enforcement Agency (LEA).

The ETSI_LI_v3_1_1 Asn1API is compliant with :

• ETSI ES_201_671 V3.1.1 (2006-03) - Handover interface for the lawful interception of telecommunications traffic;
• ETSI ES_102_232 Part 1 to 6 - Handover Interface and Service-Specific Details (SSD) for IP delivery;
• ETSI EN_301 040 V2.1.1 (2006-03) - Terrestrial Trunked Radio (TETRA); Security; Lawful Interception (LI) interface;
• ETSI TS 101 909-20-01 V1.1.2 (2005-10) - Digital Broadband Cable Access to the Public Telecommunications Network; IP Multimedia Time Critical Services; Part 20: Lawful Interception; Sub-part 1: CMS based Voice Telephony Services;
• 3GPP TS 33.108 V7.7.0 (2007-03) - Technical Specification Group Services and System Aspects; 3G security; Handover interface for Lawful Interception;
• ROSE (Remote Operation Service Element X880, X881, X882).

uniGone provides Asn1API for ETSI_LI V1_1_1, V2_1_1, V2_8_1, V2_11_1 and V3_1_1.

The ETSI_LI AsnAPI includes enhanced capabilities for decoding "raw" information that are extracted from other standards ISUP, DSS1, MAP... In particular, SMS contents are fully decoded.