Specification
3GPP TS 24.238: Session Initiation Protocol (SIP) based user configuration; Stage 3
At a glance
- Title
- Session Initiation Protocol (SIP) based user configuration; Stage 3
- Newest version
- V19.0.0 (Rel-19)
- Versions indexed
- 5
- Newest per release
- Rel-15: V15.0.0 (2018-06-21); Rel-16: V16.0.0 (2020-07-09); Rel-17: V17.0.0 (2022-04-01); Rel-18: V18.0.0 (2024-04-04); Rel-19: V19.0.0 (2025-10-14)
In plain words
TS 24.238 provides a Session Initiation Protocol (SIP) based protocol framework for user configuration of supplementary services. Its scope is the IP Multimedia (IM) Core Network (CN) subsystem, and it applies to User Equipment (UE) and Application Servers (AS) intended to support that configuration. The overview explains how the Request-URI carries the configuration code: "The contents of the Request-URI in a SIP INVITE request is used to convey the configuration code to the Application Server that hosts the supplementary service.".
Source: 3GPP TS 24.238 V19.0.0, clause 4.1. © 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC). Official text: https://www.3gpp.org/ftp/Specs/archive/24_series/24.238/24238-j00.zip
Newest version in each release
| Release | Newest version | In the archive | TSG meeting |
|---|---|---|---|
| Rel-19 | V19.0.0 | 2025-10-14 | TSG SA #109 |
| Rel-18 | V18.0.0 | 2024-04-04 | TSG SA #103 |
| Rel-17 | V17.0.0 | 2022-04-01 | not recorded |
| Rel-16 | V16.0.0 | 2020-07-09 | not recorded |
| Rel-15 | V15.0.0 | 2018-06-21 | not recorded |
Source: 3GPP specification archive, versions indexed by 3GPP Scout. Each version links its official file.
Meetings behind the latest versions
Plenary meetings:
- TSG SA #109 is recorded for V19.0.0 (Rel-19)
- TSG SA #103 is recorded for V18.0.0 (Rel-18)
Source: 3GPP CR database and specification archive, as indexed by 3GPP Scout.
Sources
- 3GPP TS 24.238 V19.0.0, clause 1. © 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC). Official text: https://www.3gpp.org/ftp/Specs/archive/24_series/24.238/24238-j00.zip
- 3GPP TS 24.238 V19.0.0, clause 4.1. © 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC). Official text: https://www.3gpp.org/ftp/Specs/archive/24_series/24.238/24238-j00.zip
How this page was made
The facts box and the tables come straight from the 3GPP specification archive and CR database as indexed by 3GPP Scout. An AI model (GPT-6 Luna) wrote the paragraph and named the source of each sentence. Code checked every quote word for word against the stored source text and every number against the cited source. A second AI model from another company (Claude Opus 5.5) reviewed the paragraph against the same sources. The 3GPP documents themselves govern.