TR 43.903 – Feasibility Study for A-interface over IP
3GPP TR 43.903 is the 3GPP Technical Report for Feasibility Study for A-interface over IP. It is published in 12 releases (Rel-8 to Rel-19); the latest version is 19.0.0 in Rel-19.
Studies introducing IP transport for A-interface between BSS and core network, focusing on transcoder placement, bandwidth efficiency, and migration.
Releases and versions of TR 43.903
| Release | Latest version | Links |
|---|---|---|
| Rel-19 | 19.0.0 | Read · Download (3GPP) |
| Rel-18 | 18.0.0 | 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 | 8.3.0 | Read · Download (3GPP) |
Scope of TR 43.903
Category: Core Network (Interfaces). Technology generation: Multi-Gen. Network layer: CoreNetwork.
Who should read this specification?
- Network operators
- Device manufacturers
- Researchers and academics
Implementation notes
Complexity level: Advanced. Implementation difficulty: High.
Key technologies
Specifications referenced by TR 43.903
- 29.802 (G)MSC-S - (G)MSC-S Nc Interface based on the SIP-I protocol
- TS 23.153 Out-of-Band Transcoder Control Stage 2
- TS 23.231 SIP-I based CS core network stage 2
- TS 29.414 Nb Interface Bearer Transport & Control Protocols
- TS 25.415 Iu Interface User Plane Protocol
- TS 29.415 Nb User Plane Protocol Specification
- TS 28.062 Tandem Free Operation (TFO) Service Description
- TS 26.093 SCR operation of AMR codec for UMTS
- TR 21.905 3GPP Terminology and Definitions
- TS 23.205 Bearer Independent CS Core Network Stage 2
- TS 48.006 BSS-MSC interface: Layer 2 and SCCP spec
- TS 23.002 3GPP System Architecture Overview
Other specifications in the 43 series
Related glossary terms
Related topics
Frequently asked questions
What is 3GPP TR 43.903?
3GPP TR 43.903 is the 3GPP Technical Report for Feasibility Study for A-interface over IP. Studies introducing IP transport for A-interface between BSS and core network, focusing on transcoder placement, bandwidth efficiency, and migration.
Which 3GPP releases include TR 43.903?
TR 43.903 is published in 12 releases, from Rel-8 to Rel-19. The latest version on 3GPP Explorer is 19.0.0 (Rel-19).
What category does TR 43.903 belong to?
TR 43.903 belongs to the Core Network (Interfaces) category of 3GPP specifications. It applies to Multi-Gen networks.
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