TR 23.981 – IPv4 IMS Interworking and Migration Study
3GPP TR 23.981 is the 3GPP Technical Report for IPv4 IMS Interworking and Migration Study. It is published in 15 releases (Rel-5 to Rel-19); the latest version is 19.0.0 in Rel-19.
Studies interworking and migration scenarios for IPv4-based IMS implementations, providing guidelines for operators and vendors.
Releases and versions of TR 23.981
| Release | Latest version | Links |
|---|---|---|
| Rel-19 | 19.0.0 | Read · Download (3GPP) |
| Rel-18 | 18.0.0 | Read · Download (3GPP) |
| Rel-17 | 17.0.0 | Read · Download (3GPP) |
| Rel-16 | 16.0.0 | Read · Download (3GPP) |
| Rel-15 | 15.0.0 | Read · Download (3GPP) |
| Rel-14 | 14.0.0 | Read · Download (3GPP) |
| Rel-13 | 13.0.0 | Read · Download (3GPP) |
| Rel-12 | 12.0.0 | Read · Download (3GPP) |
| Rel-11 | 11.0.0 | Read · Download (3GPP) |
| Rel-10 | 10.0.0 | Read · Download (3GPP) |
| Rel-9 | 9.0.0 | Read · Download (3GPP) |
| Rel-8 | 8.0.0 | Read · Download (3GPP) |
| Rel-7 | 7.0.0 | Read · Download (3GPP) |
| Rel-6 | 6.4.0 | Read · Download (3GPP) |
| Rel-5 | 5.0.0 | Read · Download (3GPP) |
Scope of TR 23.981
Category: Core Network (IMS). Technology generation: 3G. Network layer: CoreNetwork.
Who should read this specification?
- Network operators
- Device manufacturers
- Researchers and academics
Implementation notes
Complexity level: Advanced. Implementation difficulty: Medium.
Key technologies
Specifications referenced by TR 23.981
- TS 24.167 3GPP IMS Management Object
- TS 27.060 TE-MT Interworking for Packet Domain
- TR 21.905 3GPP Terminology and Definitions
- TS 23.221 3GPP System Architectural Requirements
- TS 23.228 IP Multimedia Core Network Subsystem
- TS 23.141 Presence Service Stage 2 Architecture
- TS 23.060 GPRS Stage 2 Service Description
- TS 33.203 IMS Security Features and Mechanisms
- TS 24.008 NAS Call, Mobility and Session Procedures
Specifications that reference TR 23.981
Other specifications in the 23 series
Related glossary terms
Related topics
Frequently asked questions
What is 3GPP TR 23.981?
3GPP TR 23.981 is the 3GPP Technical Report for IPv4 IMS Interworking and Migration Study. Studies interworking and migration scenarios for IPv4-based IMS implementations, providing guidelines for operators and vendors.
Which 3GPP releases include TR 23.981?
TR 23.981 is published in 15 releases, from Rel-5 to Rel-19. The latest version on 3GPP Explorer is 19.0.0 (Rel-19).
What category does TR 23.981 belong to?
TR 23.981 belongs to the Core Network (IMS) category of 3GPP specifications. It applies to 3G networks.
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