TS 02.91 – Explicit Call Transfer (ECT) Stage 1
3GPP TS 02.91 is the 3GPP Technical Specification for Explicit Call Transfer (ECT) Stage 1. It is published in 2 releases (Rel-2 to R99); the latest version is 1111 in R99.
Stage 1 service description for Explicit Call Transfer supplementary service in GSM, enabling a subscriber to connect two other parties and release own connection.
Releases and versions of TS 02.91
| Release | Latest version | Links |
|---|---|---|
| R99 | 1111 | Read · Download (3GPP) |
| Rel-2 | 1200 | Read · Download (3GPP) |
Scope of TS 02.91
Category: Services (Supplementary Services). Technology generation: 2G. Network layer: Services.
Who should read this specification?
- Network operators
- Device manufacturers
- Researchers and academics
Implementation notes
Complexity level: Basic. Implementation difficulty: Medium.
Key technologies
Other specifications in the 02 series
- TS 02.86 Charging Supplementary Services Specification
- TS 02.87 User-to-User Signalling (UUS) Supplementary Service
- TS 02.88 Call Restriction Supplementary Services
- TS 02.90 Unstructured Supplementary Service Data (USSD)
- TS 02.93 Completion of Calls to Busy Subscriber (CCBS)
- TS 02.95 Support of Private Numbering Plan (SPNP)
- TS 02.96 CNAP Calling Name Presentation Service
- TS 02.97 Multiple Subscriber Profile (MSP)
Related glossary terms
Related topics
Frequently asked questions
What is 3GPP TS 02.91?
3GPP TS 02.91 is the 3GPP Technical Specification for Explicit Call Transfer (ECT) Stage 1. Stage 1 service description for Explicit Call Transfer supplementary service in GSM, enabling a subscriber to connect two other parties and release own connection.
Which 3GPP releases include TS 02.91?
TS 02.91 is published in 2 releases, from Rel-2 to R99. The latest version on 3GPP Explorer is 1111 (R99).
What category does TS 02.91 belong to?
TS 02.91 belongs to the Services (Supplementary Services) category of 3GPP specifications. It applies to 2G networks.
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