TS 22.091 – Explicit Call Transfer (ECT) Stage 1
3GPP TS 22.091 is the 3GPP Technical Specification for Explicit Call Transfer (ECT) Stage 1. Its official 3GPP title is “Explicit Call Transfer (ECT) supplementary service; Stage 1”. It is published in 17 releases (R99 to Rel-19); the latest version is 19.0.0 in Rel-19.
Specifies stage 1 description of Explicit Call Transfer (ECT) supplementary service from subscriber and user perspectives, including normal operation, exception procedures, and interactions.
Releases and versions of TS 22.091
| Release | Latest version | Links |
|---|---|---|
| Rel-19 | 19.0.0 | Read · Download (3GPP) |
| Rel-18 | 18.0.1 | 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 | 6.0.0 | Read · Download (3GPP) |
| Rel-5 | 5.0.0 | Read · Download (3GPP) |
| Rel-4 | 4.0.0 | Read · Download (3GPP) |
| R99 | 3.1.0 | Read · Download (3GPP) |
Scope of TS 22.091
Category: Services (Supplementary Services). Technology generation: 3G. Network layer: Services.
Who should read this specification?
- Network operators
- Device manufacturers
Implementation notes
Complexity level: Intermediate. Implementation difficulty: Medium.
Key technologies
Specifications referenced by TS 22.091
Specifications that reference TS 22.091
Other specifications in the 22 series
- TS 22.086 Charging Supplementary Services
- TS 22.087 User-to-User Signalling (UUS) Supplementary Service
- TS 22.088 Call Restriction Supplementary Services
- TS 22.090 USSD Stage 1 Specification
- TS 22.093 Completion of Calls to Busy Subscriber (CCBS)
- TS 22.094 Follow Me Feature Stage 1 Specification
- TS 22.096 Calling Name Presentation (CNAP)
- TS 22.097 Multiple Subscriber Profile (MSP) service
Related glossary terms
Related topics
Frequently asked questions
What is 3GPP TS 22.091?
3GPP TS 22.091 is the 3GPP Technical Specification for Explicit Call Transfer (ECT) Stage 1. Specifies stage 1 description of Explicit Call Transfer (ECT) supplementary service from subscriber and user perspectives, including normal operation, exception procedures, and interactions.
Which 3GPP releases include TS 22.091?
TS 22.091 is published in 17 releases, from R99 to Rel-19. The latest version on 3GPP Explorer is 19.0.0 (Rel-19).
What category does TS 22.091 belong to?
TS 22.091 belongs to the Services (Supplementary Services) category of 3GPP specifications. It applies to 3G networks.
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