TS 24.390
Unstructured Supplementary Service Data (USSD) using IP Multimedia (IM) Core Network (CN) subsystem IMS; Stage 3
Rel-20TSIMSApproved
AI Summary
No AI summary has been generated for this specification yet.
Versions
| Version | Release | Date | Status |
|---|---|---|---|
| 20.0.0 | Rel-20 | 2026-07-26 | Approved |
| 19.0.0 | Rel-19 | 2026-07-26 | Approved |
| 18.0.0 | Rel-18 | 2026-07-25 | Approved |
| 17.0.0 | Rel-17 | 2026-07-25 | Approved |
| 16.0.0 | Rel-16 | 2026-07-25 | Approved |
| 15.1.0 | Rel-15 | 2026-07-25 | Approved |
Related Specifications
TS 24.980
Minimum requirements for support of MCPTT service over the Gm reference point
Protocol
Rel-15TSIMSUpdated 2026-07-25
TS 24.969
Business trunking; Next Generation Corporate Network (NGCN) - Next Generation Network (NGN) interfaces implementation guide
Protocol
Rel-15TSIMSUpdated 2026-07-25
TS 24.930
Signalling flows for the session setup in the IP Multimedia core network Subsystem (IMS) based on Session Initiation Protocol (SIP) and Session Description Protocol (SDP); Stage 3
Protocol
Rel-15TSIMSUpdated 2026-07-25
TS 24.890
CT WG1 aspects of 5G; System Phase 1
Protocol
Rel-15TSIMSUpdated 2026-07-25
TS 24.883
Mission Critical (MC) systems connection to Land Mobile Radio (LMR) systems; Stage-3
Protocol
Rel-16TSIMSUpdated 2026-07-25
TS 24.821
Study on PLMN selection for satellite access
Protocol
Rel-17TSIMSUpdated 2026-07-25
TS 24.812
Study on MINT support in EPS for 5G-only national roaming UE
Protocol
Rel-19TSIMSUpdated 2026-07-26
TS 24.811
Study on the support for minimization of service interruption
Protocol
Rel-17TSIMSUpdated 2026-07-25