Update docs to reflect transports endpoint moving to MSC4519

This is linked from the 0.24.0 release notes, so even more important for it to be up to date.
This commit is contained in:
Robin
2026-08-19 11:48:48 +02:00
parent c625fb8845
commit 3448a3a2ef
+19 -20
View File
@@ -16,7 +16,7 @@
The following [MSCs](https://github.com/matrix-org/matrix-spec-proposals) are
required for Element Call to work properly:
- **[MSC3266](https://github.com/deepbluev7/matrix-doc/blob/room-summaries/proposals/3266-room-summary.md):
- **[MSC3266](https://github.com/deepbluev7/matrix-doc/blob/room-summaries/proposals/3266-room-summary.md)
Room Summary API**: In Standalone mode Element Call is able to join rooms
over federation using knocking. In this context MSC3266 is required as it
allows to request a room summary of rooms you are not joined. The summary
@@ -29,19 +29,26 @@ required for Element Call to work properly:
signalling. If disabled it is very likely that you end up with stuck calls in
Matrix rooms.
- **[MSC4519](https://github.com/matrix-org/matrix-spec-proposals/blob/travis/msc/voip-transports-registry/proposals/4519-rtc-transports-registry.md)
MatrixRTC Transports Registry**: Defines an endpoint that clients can use to
query the available MatrixRTC transports (i.e. find your LiveKit SFU).
- **[MSC4222](https://github.com/matrix-org/matrix-spec-proposals/blob/erikj/sync_v2_state_after/proposals/4222-sync-v2-state-after.md)
Adding `state_after` to sync v2**: Allow clients to opt-in to a change of the
sync v2 API that allows them to correctly track the state of the room. This is
required by Element Call to track room state reliably.
If you're using [Synapse](https://github.com/element-hq/synapse/) as your
homeserver, you'll need to additionally add the following config items to
`homeserver.yaml` to comply with Element Call:
homeserver, you can configure these features by adding the following entries to
`homeserver.yaml`:
```yaml
experimental_features:
# MSC3266: Room summary API. Used for knocking over federation
msc3266_enabled: true
# MSC4143: MatrixRTC. For historical reasons this flag enables the transports
# endpoint defined in MSC4519.
msc4143_enabled: true
# MSC4222 needed for syncv2 state_after. This allow clients to
# correctly track the state of the room.
msc4222_enabled: true
@@ -61,6 +68,15 @@ rc_delayed_event_mgmt:
# Currently the heart-beat is every 5 seconds which translates into a rate of 0.2Hz
per_second: 1
burst_count: 20
matrix_rtc:
transports:
# The transport you specify will be made available to clients over the
# /_matrix/client/unstable/org.matrix.msc4143/rtc/transports endpoint as
# defined in MSC4519.
- type: livekit
# Replace this with the actual URL of your MatrixRTC Authorization Service
livekit_service_url: https://matrix-rtc.example.com/livekit/jwt
```
As a prerequisite for the
@@ -187,23 +203,6 @@ backend mxrtc_auth_backend
```
#### MatrixRTC transport announcement
Enable the unstable feature flag `msc4143_enabled`, and update the
[`matrix_rtc` section](https://element-hq.github.io/synapse/latest/usage/configuration/config_documentation.html#matrix_rtc)
of your Synapse config file:
```yaml
matrix_rtc:
transports:
- type: livekit
livekit_service_url: https://matrix-rtc.example.com/livekit/jwt
```
The transport you specify will be made available to clients over the
`/_matrix/client/unstable/org.matrix.msc4143/rtc/transports` endpoint as defined
in [MSC4143](https://github.com/matrix-org/matrix-spec-proposals/pull/4143).
## Building Element Call
> [!NOTE]