TS 33.128 – Lawful Interception Protocols and Procedures
3GPP TS 33.128 is the 3GPP Technical Specification for Lawful Interception Protocols and Procedures. Its official 3GPP title is “Protocol and procedures for Lawful Interception (LI)”. It is published in 5 releases (Rel-15 to Rel-19); the latest version is 19.8.0 in Rel-19.
Defines 3GPP lawful interception protocols, targeting procedures, captured information, and data formats for internal network functions and handover to law enforcement.
Releases and versions of TS 33.128
| Release | Latest version | Links |
|---|---|---|
| Rel-19 | 19.8.0 | Read · Download (3GPP) |
| Rel-18 | 18.17.0 | Read · Download (3GPP) |
| Rel-17 | 17.22.0 | Read · Download (3GPP) |
| Rel-16 | 16.22.0 | Read · Download (3GPP) |
| Rel-15 | 15.13.0 | Read · Download (3GPP) |
Scope of TS 33.128
Primary function: Protocol Definition and Procedures. Category: Security (Lawful Interception). Technology generation: Multi-Gen. Network layer: Security.
Who should read this specification?
- Network operators
- Device manufacturers
- Regulators and standards bodies
- Researchers and academics
Implementation notes
Complexity level: Expert. Implementation difficulty: High.
Key technologies
Specifications referenced by TS 33.128
- TS 29.563 Nhss Services for 5G SBA Stage 3
- TS 29.562 HSS Nhss Services for IMS and GBA
- TS 23.032 Universal Geographical Area Description
- TS 29.272 MME and SGSN Diameter interfaces to HSS/CSS/EIR
- TS 32.299 Diameter Charging Applications for 3GPP
- TS 32.423 Trace Data Definition and Management
- TS 38.414 NG Interface User Plane Protocol
- TS 33.501 5G Security Architecture
- TR 33.928 LI ADMF Provisioning Logic for LI Functions
- TS 23.316 Wireless and wireline convergence access support
- TS 23.038 Character Sets, Languages and Message Handling Requirements for SMS, CBS and USSD
- TS 24.502 Non-3GPP Access Network Discovery and Selection
Specifications that reference TS 33.128
Other specifications in the 33 series
- TS 33.117 Catalogue of Security Requirements and Tests
- TS 33.122 CAPIF Security Architecture Specification
- TS 33.126 Lawful Interception Requirements
- TS 33.127 Lawful Interception Architecture
- TS 33.141 Security for Presence Service (Ut reference point)
- TS 33.163 Battery Efficient Security for Low Throughput MTC
- TS 33.179 MCPTT Security Architecture and Procedures
- TS 33.180 Security of the Mission Critical Service (MCX)
Frequently asked questions
What is 3GPP TS 33.128?
3GPP TS 33.128 is the 3GPP Technical Specification for Lawful Interception Protocols and Procedures. Defines 3GPP lawful interception protocols, targeting procedures, captured information, and data formats for internal network functions and handover to law enforcement.
Which 3GPP releases include TS 33.128?
TS 33.128 is published in 5 releases, from Rel-15 to Rel-19. The latest version on 3GPP Explorer is 19.8.0 (Rel-19).
What does TS 33.128 specify?
Protocol Definition and Procedures.
What category does TS 33.128 belong to?
TS 33.128 belongs to the Security (Lawful Interception) category of 3GPP specifications. It applies to Multi-Gen networks.
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