# SA4#135-bis-e Meeting Agenda Summary

**Document type:** Meeting agenda for approval (SA4#135-bis-e)

**Meeting format:** Electronic meeting, 10–17 April 2026 (opening 14:00 CEST Tuesday, closing 18:00 CEST Friday)

## Key Administrative Points
- Document submission deadline: **7 April 2026, 23:59 CEST** — late submissions will not be handled
- Meeting counts toward **voting rights maintenance** (SWG attendance does not)
- Input documents should be registered primarily under **AI 6, 7–11, or 18**

## E-Meeting Process (agreed at SA4#135)
- **Friday 7 May:** Email agreements on FS_6G_MED only
- **Monday 13th:** Online sessions dedicated to FS_6G_MED; SWG email agreements triggered
- **Tue–Thu 14–16th:** Online SWG sessions
- **Friday 17th:** Closing plenary

## Active Work Items (Rel-20 Features)
- **DaCAS** – Diverse Audio Capturing System for UEs
- **AIML_IMS-MED** – Media aspects for AI/ML in IMS services
- **ATIAS_Ph3** – Terminal audio quality/test methods for immersive audio

## Active Study Items
- **Audio:** FS_ACAPI (Audio Codec APIs), FS_ULBC (Ultra Low Bitrate Speech Codec)
- **MBS:** FS_Energy_Ph2_MED, FS_AMD_Ph2, FS_QStream_MED (QUIC for video streaming)
- **Video:** FS_AVFOPS_MED, FS_3DGS_MED (3D Gaussian Splats), FS_AIF_MED, FS_Avatar_Ph2_MED
- **RTC:** FS_DCTC_eQOS_MED, FS_Q4RTC_MED (QUIC for RTC), FS_DCE_MED (IMS DC Enhancements)
- **SA4-level:** FS_6G_MED (Media aspects for 6G)

## New Work
- AI 18 covers proposals for new Rel-20 5G-Advanced WIs/SIs and new Rel-20 6G SIs