TS 22.173 – IMS Multimedia Telephony Service Definition
3GPP TS 22.173 is the 3GPP Technical Specification for IMS Multimedia Telephony Service Definition. Its official 3GPP title is “IP Multimedia Core Network Subsystem (IMS) Multimedia Telephony Service and supplementary services; Stage 1”. It is published in 14 releases (Rel-7 to Rel-20); the latest version is 20.0.0 in Rel-20.
Defines IMS Multimedia Telephony service capabilities for multi-vendor interoperability, including supplementary services, media handling, and caller identity verification.
Releases and versions of TS 22.173
| Release | Latest version | Links |
|---|---|---|
| Rel-20 | 20.0.0 | Read · Download (3GPP) |
| Rel-19 | 19.0.0 | Read · Download (3GPP) |
| Rel-18 | 18.0.1 | Read · Download (3GPP) |
| Rel-17 | 17.3.0 | Read · Download (3GPP) |
| Rel-16 | 16.3.0 | Read · Download (3GPP) |
| Rel-15 | 15.1.0 | Read · Download (3GPP) |
| Rel-14 | 14.3.0 | Read · Download (3GPP) |
| Rel-13 | 13.2.0 | Read · Download (3GPP) |
| Rel-12 | 12.9.0 | Read · Download (3GPP) |
| Rel-11 | 11.7.0 | Read · Download (3GPP) |
| Rel-10 | 10.7.0 | Read · Download (3GPP) |
| Rel-9 | 9.7.0 | Read · Download (3GPP) |
| Rel-8 | 8.10.0 | Read · Download (3GPP) |
| Rel-7 | 7.5.0 | Read · Download (3GPP) |
Scope of TS 22.173
Category: Services (IMS). Technology generation: Multi-Gen. Network layer: Services.
Who should read this specification?
- Network operators
- Device manufacturers
- Regulators and standards bodies
Implementation notes
Complexity level: Intermediate. Implementation difficulty: Medium.
Key technologies
Specifications referenced by TS 22.173
- TS 22.183 Customized Ringing Signal (CRS) Requirements
- TS 22.090 USSD Stage 1 Specification
- TS 22.001 Circuit Telecommunication Services in PLMN
- TS 22.030 UE Man-Machine Interface (MMI)
- TR 21.905 3GPP Terminology and Definitions
- TS 22.228 IP Multimedia Service Requirements
- TS 22.041 Operator Determined Barring (ODB)
- TS 24.173 Multimedia Telephony Service and Supplementary Services in IMS
- TS 22.101 Service Principles for PLMNs
- TS 22.182 Customized Alerting Tone (CAT) Service Requirements
Specifications that reference TS 22.173
- TS 23.501 5G System Architecture
- TS 23.401 Evolved Packet System Architecture
- TS 23.228 IP Multimedia Core Network Subsystem
- TS 23.060 GPRS Stage 2 Service Description
- TS 26.114 IMS Multimedia Telephony Client
- TS 22.261 5G System Service Requirements
- TS 22.101 Service Principles for PLMNs
- TS 23.216 SRVCC Architecture Enhancements
- TS 22.228 IP Multimedia Service Requirements
- TS 23.237 IMS Service Continuity (ISC) Stage 2
- TS 23.292 IMS Centralized Services (ICS) Architecture
- TS 24.628 Common Basic Communication Procedures in IMS
Other specifications in the 22 series
- TS 22.146 MBMS Stage 1 Description
- TS 22.153 Multimedia Priority Service (MPS) requirements
- TS 22.156 Service requirements for the mobile metaverse
- TS 22.168 Earthquake and Tsunami Warning System (ETWS) Requirements
- TS 22.174 Push Service Stage 1 Requirements
- TS 22.179 MCPTT Service Requirements
- TS 22.182 Customized Alerting Tone (CAT) Service Requirements
- TS 22.183 Customized Ringing Signal (CRS) Requirements
Related glossary terms
Related topics
Related technologies
Frequently asked questions
What is 3GPP TS 22.173?
3GPP TS 22.173 is the 3GPP Technical Specification for IMS Multimedia Telephony Service Definition. Defines IMS Multimedia Telephony service capabilities for multi-vendor interoperability, including supplementary services, media handling, and caller identity verification.
Which 3GPP releases include TS 22.173?
TS 22.173 is published in 14 releases, from Rel-7 to Rel-20. The latest version on 3GPP Explorer is 20.0.0 (Rel-20).
What category does TS 22.173 belong to?
TS 22.173 belongs to the Services (IMS) category of 3GPP specifications. It applies to Multi-Gen networks.
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