Specification
3GPP TR 26.959: Study on enhanced Voice over LTE (VoLTE) performance
At a glance
- Title
- Study on enhanced Voice over LTE (VoLTE) performance
- Newest version
- V19.0.0 (Rel-19)
- Versions indexed
- 5
- Newest per release
- Rel-15: V15.0.0 (2018-06-22); Rel-16: V16.0.0 (2019-09-27); Rel-17: V17.0.0 (2022-04-07); Rel-18: V18.0.0 (2024-05-15); Rel-19: V19.0.0 (2025-10-24)
In plain words
TR 26.959 studies enhanced Voice over LTE (VoLTE) performance, which the specification calls eVoLP. The scope states "This study may require investigating performance results for different conditions and adaptation procedures." Its newest indexed version is V19.0.0 for Rel-19.
Source: 3GPP TR 26.959 V19.0.0, clause 1. © 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC). Official text: https://www.3gpp.org/ftp/Specs/archive/26_series/26.959/26959-j00.zip
Newest version in each release
| Release | Newest version | In the archive | TSG meeting |
|---|---|---|---|
| Rel-19 | V19.0.0 | 2025-10-24 | TSG SA #109 |
| Rel-18 | V18.0.0 | 2024-05-15 | TSG SA #103 |
| Rel-17 | V17.0.0 | 2022-04-07 | not recorded |
| Rel-16 | V16.0.0 | 2019-09-27 | TSG SA #85 |
| Rel-15 | V15.0.0 | 2018-06-22 | 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 TR 26.959 V19.0.0, clause 1. © 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC). Official text: https://www.3gpp.org/ftp/Specs/archive/26_series/26.959/26959-j00.zip
- 3GPP specification archive, versions indexed by 3GPP Scout.
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.