(backend) wip introduce a token exchange endpoint

Add a prototype setup that uses OrbStack as the local Kubernetes
provider on macOS, aiming to save a few GB of RAM compared to the
current stack.

The script has been tested locally but was mostly built through vibe
coding, so it has not been thoroughly reviewed yet.

Follow-ups to look into:

* Simplify the ingress and CoreDNS setup if possible.
* Wire up a way to run tests and lint against the Tilt stack.

CHANGELOG.md

@@ -14,7 +14,6 @@ and this project adheres to
 - ✨(frontend) add configurable documentation menu item
 - ✨(frontend) allow promoting authenticated participants
 - ✨(frontend) introduce an "unauthenticated" participant badge
-- ✨(backend) add roomkit viewset to start a room without WebRTC join
 
 ### Changed
 
@@ -27,7 +26,6 @@ and this project adheres to
 - 📝(legal) update terms of service
 - 💄(frontend) render Avatar initials in uppercase
 - 💄(frontend) improve participant name rendering in the list
-- 🚚(backend) rename TelephonyService to SIPManagement
 
 ## Fixed
 

src/backend/core/analytics/events.py

@@ -8,6 +8,3 @@ class AnalyticsEvent(StrEnum):
 
     # Rooms
     ROOM_CREATED = "room_created"
-
-    # Roomkit (meeting-room SIP devices)
-    ROOMKIT_JOINED = "roomkit_joined"

src/backend/core/api/feature_flag.py

@@ -16,7 +16,7 @@ class FeatureFlag:
         "file_upload": "FILE_UPLOAD_ENABLED",
         "addons": "ADDONS_ENABLED",
         "application": "APPLICATION_ENABLED",
-        "roomkit": "ROOMKIT_ENABLED",
+        "user_access_token": "USER_ACCESS_TOKEN_ENABLED",
     }
 
     @classmethod

src/backend/core/api/serializers.py

@@ -580,3 +580,25 @@ class ExternalProcessEventSerializer(BaseValidationOnlySerializer):
     # useless bad requests
     type = serializers.CharField(required=False, allow_null=True, allow_blank=True)
     status = serializers.CharField(required=False, allow_null=True, allow_blank=True)
+
+
+class TransitCodeSerializer(BaseValidationOnlySerializer):
+    """Validate the single-use transit code sent to the exchange endpoint."""
+
+    # todo if I can pass the max length directly to the char field
+    code = serializers.CharField(max_length=255, trim_whitespace=True)
+
+    def validate_code(self, value):
+        """Reject codes whose length cannot match a generated one.
+
+        `secrets.token_urlsafe(nbytes)` produces (4 * nbytes + 2) // 3
+        url-safe characters. Checking the length against the configured
+        TRANSIT_CODE_NBYTES makes malformed codes fail fast with a 400,
+        before any cache lookup.
+        """
+        expected_length = (4 * settings.TRANSIT_CODE_NBYTES + 2) // 3
+
+        if len(value) != expected_length:
+            raise serializers.ValidationError("Invalid transit code format.")
+
+        return value

src/backend/core/api/throttling.py

@@ -75,13 +75,12 @@ class CreationCallbackAnonRateThrottle(MonitoredAnonRateThrottle):
     scope = "creation_callback"
 
 
-class RoomKitJoinRateThrottle(MonitoredUserRateThrottle):
+class ExchangeAccessTokenAnonRateThrottle(MonitoredAnonRateThrottle):
-    """Throttle the LiveKit SIP module requesting roomkit joins.
+    """Throttle anonymous transit code exchange attempts.
 
-    The roomkit endpoints are authenticated as a machine user, so all requests
+    Abuse mitigation only, not a security boundary: DRF throttling is
-    share a single throttle bucket. This is not a security measure against
+    best-effort. The security of the exchange rests on the codes'
-    brute-force attacks but a guard against accidental hammering from a buggy
+    entropy and single use.
-    SIP module.
     """
 
-    scope = "roomkit_join"
+    scope = "exchange_access_token"

src/backend/core/api/viewsets.py

@@ -69,6 +69,7 @@ from core.recording.worker.mediator import (
     WorkerServiceMediator,
 )
 from core.services.invitation import InvitationService
+from core.services.jwt_token import JwtTokenService
 from core.services.livekit_events import (
     LiveKitEventsService,
     LiveKitWebhookError,
@@ -93,6 +94,7 @@ from core.services.room_roles import (
     RoomRoleService,
 )
 from core.services.subtitle import SubtitleException, SubtitleService
+from core.services.transit_code import TransitCodeService
 from core.tasks.file import process_file_deletion
 
 from ..authentication.livekit import LiveKitTokenAuthentication
@@ -229,6 +231,76 @@ class UserViewSet(
             self.serializer_class(request.user, context=context).data
         )
 
+    @decorators.action(
+        detail=False,
+        methods=["post"],
+        url_path="exchange-access-token",
+        permission_classes=[],
+        throttle_classes=[throttling.ExchangeAccessTokenAnonRateThrottle],
+    )
+    @FeatureFlag.require("user_access_token")
+    def exchange_access_token(self, request):
+        """Exchange a single-use transit code for a user access token.
+
+        The endpoint is unauthenticated: the transit code itself, an opaque
+        random string obtained through the external API and delivered to
+        the embedded frontend via a URL fragment, is the credential. Each
+        code can be exchanged exactly once (consuming it deletes it from
+        the cache); replaying a consumed code is denied and logged.
+
+        The issued JWT authenticates the user the code was minted for on
+        the whole core API, exactly like a session cookie would (similar
+        to lib-jitsi-meet's token authentication), and never appears in
+        any URL. Role-based permissions apply unchanged.
+        """
+        serializer = serializers.TransitCodeSerializer(data=request.data)
+        serializer.is_valid(raise_exception=True)
+
+        code_data = TransitCodeService().consume_code(serializer.validated_data["code"])
+
+        if code_data is None:
+            logger.warning("Invalid, expired or already used transit code")
+            raise drf_exceptions.PermissionDenied(
+                "Invalid, expired or already used transit code."
+            )
+
+        # Re-check the user at exchange time so that a deactivation after
+        # the transit code was minted is taken into account.
+        try:
+            user = models.User.objects.get(id=code_data["user_id"], is_active=True)
+        except models.User.DoesNotExist as excpt:
+            raise drf_exceptions.PermissionDenied(
+                "This account can no longer access the application."
+            ) from excpt
+
+        token_service = JwtTokenService(
+            secret_key=settings.USER_ACCESS_TOKEN_SECRET_KEY,
+            algorithm=settings.USER_ACCESS_TOKEN_ALG,
+            issuer=settings.USER_ACCESS_TOKEN_ISSUER,
+            audience=settings.USER_ACCESS_TOKEN_AUDIENCE,
+            expiration_seconds=settings.USER_ACCESS_TOKEN_TTL,
+            token_type=settings.USER_ACCESS_TOKEN_TYPE,
+        )
+
+        # todo - discuss wether it's the relevant scope
+        data = token_service.generate_jwt(
+            user,
+            "user:access",
+            {
+                "token_type": "user_access",
+                "client_id": code_data.get("client_id", "unknown"),
+            },
+        )
+
+        # Log for auditing
+        logger.info(
+            "User access token issued from transit code: user_id=%s, client_id=%s",
+            user.id,
+            code_data.get("client_id", "unknown"),
+        )
+
+        return drf_response.Response(data)
+
 
 class RoomViewSet(
     mixins.CreateModelMixin,

src/backend/core/authentication/user_token.py

@@ -0,0 +1,71 @@
+"""User access JWT authentication for the Meet core API.
+
+Allows an embedded frontend (e.g. rendered in an iframe, where third-party
+session cookies are blocked) to authenticate requests on the core API with
+a JWT, obtained by exchanging a single-use transit code (see
+core.services.transit_code and the users exchange-access-token endpoint)
+and passed as a Bearer header. The JWT itself never appears in any URL.
+
+Similar to lib-jitsi-meet's token authentication, the token is bound to a
+user, not to a resource: once authenticated, the request is treated
+exactly like a session-authenticated one, and the existing role-based
+permissions apply unchanged.
+"""
+
+import logging
+
+from django.conf import settings
+
+from rest_framework import exceptions
+
+from core.external_api.authentication import BaseJWTAuthentication
+
+logger = logging.getLogger(__name__)
+
+USER_ACCESS_TOKEN_TYPE_CLAIM = "user_access"  # noqa: S105
+
+
+class UserAccessJWTAuthentication(BaseJWTAuthentication):
+    """JWT authentication for user access tokens.
+
+    Validates user access tokens issued by the users exchange-access-token
+    endpoint and authenticates the user they were issued for. A bearer
+    token that does not verify against the user access token secret is
+    deferred to the next authentication backend; a token that does verify
+    but carries wrong claims is rejected.
+
+    When the feature is disabled (USER_ACCESS_TOKEN_ENABLED=False), the
+    backend is entirely inert: `BaseJWTAuthentication.authenticate`
+    returns None before reading the Authorization header, deferring every
+    request to the next authentication backend.
+    """
+
+    def __init__(self):
+        """Initialize the backend with user access token settings."""
+        super().__init__(
+            secret_key=settings.USER_ACCESS_TOKEN_SECRET_KEY,
+            algorithm=settings.USER_ACCESS_TOKEN_ALG,
+            issuer=settings.USER_ACCESS_TOKEN_ISSUER,
+            audience=settings.USER_ACCESS_TOKEN_AUDIENCE,
+            expiration_seconds=settings.USER_ACCESS_TOKEN_TTL,
+            token_type=settings.USER_ACCESS_TOKEN_TYPE,
+            is_enabled=settings.USER_ACCESS_TOKEN_ENABLED,
+        )
+
+    def validate_payload(self, payload):
+        """Validate the token type and the issuance-audit claim.
+
+        Raises:
+            AuthenticationFailed: If the token verified against the user
+                access token secret but does not carry the expected claims.
+        """
+        if payload.get("token_type") != USER_ACCESS_TOKEN_TYPE_CLAIM:
+            logger.warning("Wrong 'token_type' in user access token payload")
+            raise exceptions.AuthenticationFailed("Invalid token type.")
+
+        # Every token we issue carries the client_id of the application the
+        # transit code was minted for: its absence means the token does not
+        # come from the exchange endpoint.
+        if not payload.get("client_id"):
+            logger.warning("Missing 'client_id' in user access token payload")
+            raise exceptions.AuthenticationFailed("Invalid token claims.")

src/backend/core/external_api/permissions.py

@@ -86,6 +86,14 @@ class HasRequiredRoomScope(BaseScopePermission):
     }
 
 
+class HasRequiredUserScope(BaseScopePermission):
+    """Scope-based permissions for the external user endpoints."""
+
+    scope_map = {
+        "generate_transit_code": models.ApplicationScope.USERS_SESSION,
+    }
+
+
 class RoomPermissions(permissions.BasePermission):
     """Permissions applying to the room API endpoint."""
 

src/backend/core/external_api/viewsets.py

@@ -22,6 +22,7 @@ from rest_framework import (
 from core import analytics, api, models
 from core.api.feature_flag import FeatureFlag
 from core.services.jwt_token import JwtTokenService
+from core.services.transit_code import TransitCodeService
 
 from ..services.provisional_user_service import (
     ProvisionalUserCreationDisabledError,
@@ -218,3 +219,62 @@ class RoomViewSet(
                 "$set": {"email": self.request.user.email},
             },
         )
+
+
+class UserViewSet(viewsets.GenericViewSet):
+    """Application-delegated API for user operations.
+
+    Provides JWT-authenticated access to user operations for external
+    applications acting on behalf of users. All operations are
+    scope-based. Meant to grow with the other user actions exposed to
+    third parties.
+
+    Supported operations:
+    - transit-code: Mint a single-use transit code for the delegated user
+      (requires 'users:session' scope)
+    """
+
+    authentication_classes = [
+        authentication.ApplicationJWTAuthentication,
+        ResourceServerAuthentication,
+    ]
+    permission_classes = [
+        api.permissions.IsAuthenticated & permissions.HasRequiredUserScope
+    ]
+
+    @decorators.action(
+        detail=False,
+        methods=["post"],
+        url_path="transit-code",
+        url_name="transit-code",
+    )
+    @FeatureFlag.require("user_access_token")
+    def generate_transit_code(self, request):
+        """Mint a transit code for the delegated user.
+
+        Returns a short-lived, single-use opaque code to pass to an embedded
+        frontend (e.g. via a URL fragment when cookies are unavailable). The
+        frontend exchanges it once on
+        POST /api/v1.0/users/exchange-access-token/ for a JWT access token,
+        equivalent to session-cookie authentication and never exposed in a URL.
+        """
+        auth_method = type(request.successful_authenticator).__name__
+        client_id = (request.auth or {}).get("client_id", "unknown")
+
+        code = TransitCodeService().create_code(request.user, client_id=client_id)
+
+        # Log for auditing
+        logger.info(
+            "Transit code issued: user_id=%s, client_id=%s, auth_method=%s",
+            request.user.id,
+            client_id,
+            auth_method,
+        )
+
+        return drf_response.Response(
+            {
+                "transit_code": code,
+                "expires_in": settings.TRANSIT_CODE_TTL,
+            },
+            status=drf_status.HTTP_200_OK,
+        )

src/backend/core/migrations/0022_alter_application_scopes.py

@@ -0,0 +1,19 @@
+# Generated by Django 5.2.14 on 2026-07-31 18:27
+
+import django.contrib.postgres.fields
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('core', '0021_recording_external_process_id_alter_recording_status'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='application',
+            name='scopes',
+            field=django.contrib.postgres.fields.ArrayField(base_field=models.CharField(choices=[('rooms:create', 'Create rooms'), ('rooms:list', 'List rooms'), ('rooms:retrieve', 'Retrieve room details'), ('rooms:update', 'Update rooms'), ('rooms:delete', 'Delete rooms'), ('users:session', 'Create user session tokens')], max_length=50), blank=True, default=list, size=None),
+        ),
+    ]

src/backend/core/models.py

@@ -429,14 +429,7 @@ class Room(Resource):
 
     def save(self, *args, **kwargs):
         """Generate a unique n-digit pin code for new rooms."""
-
+        if settings.ROOM_TELEPHONY_ENABLED and not self.pk and not self.pin_code:
-        # Roomkit devices also join by PIN, so a PIN is needed as soon as
-        # either integration is enabled.
-        if (
-            (settings.ROOM_TELEPHONY_ENABLED or settings.ROOMKIT_ENABLED)
-            and not self.pk
-            and not self.pin_code
-        ):
             self.pin_code = self.generate_unique_pin_code(
                 length=settings.ROOM_TELEPHONY_PIN_LENGTH
             )
@@ -776,6 +769,7 @@ class ApplicationScope(models.TextChoices):
     ROOMS_RETRIEVE = "rooms:retrieve", _("Retrieve room details")
     ROOMS_UPDATE = "rooms:update", _("Update rooms")
     ROOMS_DELETE = "rooms:delete", _("Delete rooms")
+    USERS_SESSION = "users:session", _("Create user session tokens")
 
 
 class Application(BaseModel):

src/backend/core/roomkit/__init__.py

@@ -1 +0,0 @@
-"""Meet core roomkit API endpoints for meeting-room (SIP) device integration."""

src/backend/core/roomkit/authentication.py

@@ -1,65 +0,0 @@
-"""Authentication for the roomkit API of the Meet core app."""
-
-import logging
-import secrets
-
-from django.conf import settings
-
-from rest_framework.authentication import BaseAuthentication
-from rest_framework.exceptions import AuthenticationFailed
-
-from core.recording.event.authentication import MachineUser
-
-logger = logging.getLogger(__name__)
-
-
-class ServerToServerAuthentication(BaseAuthentication):
-    """Custom authentication class for roomkit server-to-server requests.
-
-    Validates the Authorization header against the roomkit server-to-server
-    token. A valid PIN code is intentionally not enough to authenticate: the
-    endpoints are restricted to the LiveKit SIP module's credentials.
-    """
-
-    AUTH_HEADER = "Authorization"
-    TOKEN_TYPE = "Bearer"  # noqa S105
-
-    def authenticate(self, request):
-        """Validate the Bearer token from the Authorization header.
-
-        Returns a (MachineUser, token) pair on success, and raises
-        AuthenticationFailed if the header is missing, malformed, or contains
-        an invalid token.
-        """
-        required_token = settings.ROOMKIT_SERVER_TO_SERVER_API_TOKEN
-        if not required_token:
-            raise AuthenticationFailed("Server-to-server token is not configured.")
-
-        auth_header = request.headers.get(self.AUTH_HEADER)
-        if not auth_header:
-            logger.warning(
-                "Roomkit authentication failed: missing Authorization header (ip: %s)",
-                request.META.get("REMOTE_ADDR"),
-            )
-            raise AuthenticationFailed("Authorization header is missing.")
-
-        # Validate token format and existence
-        auth_parts = auth_header.split(" ")
-        if len(auth_parts) != 2 or auth_parts[0] != self.TOKEN_TYPE:
-            raise AuthenticationFailed("Invalid authorization header.")
-
-        token = auth_parts[1]
-
-        # Use constant-time comparison to prevent timing attacks
-        if not secrets.compare_digest(token.encode(), required_token.encode()):
-            logger.warning(
-                "Roomkit authentication failed: invalid token (ip: %s)",
-                request.META.get("REMOTE_ADDR"),
-            )
-            raise AuthenticationFailed("Invalid server-to-server token.")
-
-        return MachineUser(username="roomkit"), token
-
-    def authenticate_header(self, request):
-        """Return the WWW-Authenticate header value."""
-        return f"{self.TOKEN_TYPE} realm='Roomkit server to server'"

src/backend/core/roomkit/serializers.py

@@ -1,21 +0,0 @@
-"""Serializers for the roomkit API of the Meet core app."""
-
-# pylint: disable=abstract-method
-
-from django.conf import settings
-
-from rest_framework import serializers
-
-from core.api.serializers import BaseValidationOnlySerializer
-
-
-class RoomKitJoinSerializer(BaseValidationOnlySerializer):
-    """Validate roomkit join requests from the LiveKit SIP module."""
-
-    pin_code = serializers.CharField(required=True)
-
-    def validate_pin_code(self, value):
-        """Ensure the PIN code matches the configured length."""
-        if len(value) != settings.ROOM_TELEPHONY_PIN_LENGTH:
-            raise serializers.ValidationError("PIN code length is invalid.")
-        return value

src/backend/core/roomkit/viewsets.py

@@ -1,89 +0,0 @@
-"""Roomkit API endpoints for meeting-room (SIP) device integration."""
-
-from logging import getLogger
-
-from rest_framework import decorators, viewsets
-from rest_framework import (
-    exceptions as drf_exceptions,
-)
-from rest_framework import (
-    response as drf_response,
-)
-from rest_framework import (
-    status as drf_status,
-)
-
-from core import analytics, models
-from core.api import permissions, throttling
-from core.api.feature_flag import FeatureFlag
-from core.services.sip_management import SIPException, SIPManagement
-
-from . import authentication, serializers
-
-logger = getLogger(__name__)
-
-
-class RoomKitViewSet(viewsets.ViewSet):
-    """Server-to-server API endpoints for the roomkit integration.
-
-    Groups all interactions between roomkit (SIP) devices and the backend,
-    brokered by the LiveKit SIP module. All endpoints are authenticated
-    with the roomkit server-to-server tokens.
-    """
-
-    authentication_classes = [authentication.ServerToServerAuthentication]
-    permission_classes = [permissions.IsAuthenticated]
-
-    @decorators.action(
-        detail=False,
-        methods=["post"],
-        url_path="join",
-        throttle_classes=[throttling.RoomKitJoinRateThrottle],
-    )
-    @FeatureFlag.require("roomkit")
-    def join(self, request):
-        """Prepare a room for a meeting-room (SIP) device joining by PIN code.
-
-        Called by the LiveKit SIP module when a meeting-room device dials in
-        with a PIN code before any WebRTC participant has joined. Resolves the
-        room by PIN and creates its SIP dispatch rule, so the device can enter
-        without waiting for a WebRTC user.
-
-        The webhook-based creation path is kept: both converge on the same rule
-        through the shared SIPManagement.
-        """
-
-        serializer = serializers.RoomKitJoinSerializer(data=request.data)
-        serializer.is_valid(raise_exception=True)
-
-        try:
-            room = models.Room.objects.get(
-                pin_code=serializer.validated_data["pin_code"]
-            )
-        except models.Room.DoesNotExist as e:
-            raise drf_exceptions.NotFound("No room found for this PIN code.") from e
-
-        try:
-            created = SIPManagement().ensure_dispatch_rule(room)
-        except SIPException as e:
-            raise drf_exceptions.APIException("Could not create dispatch rule.") from e
-
-        analytics.capture(
-            request.user,
-            analytics.AnalyticsEvent.ROOMKIT_JOINED,
-            {
-                "room_id": str(room.pk),
-                "dispatch_rule_created": created,
-            },
-        )
-
-        logger.info(
-            "Roomkit join requested: room_id=%s, dispatch_rule_created=%s",
-            room.id,
-            created,
-        )
-
-        return drf_response.Response(
-            {"status": "success"},
-            status=drf_status.HTTP_200_OK,
-        )

src/backend/core/services/livekit_events.py

@@ -28,7 +28,7 @@ from .room_management import (
     RoomManagementException,
     RoomNotFoundException,
 )
-from .sip_management import SIPException, SIPManagement
+from .telephony import TelephonyException, TelephonyService
 
 logger = getLogger(__name__)
 
@@ -107,7 +107,7 @@ class LiveKitEventsService:
         )
         self.webhook_receiver = api.WebhookReceiver(token_verifier)
         self.lobby_service = LobbyService()
-        self.sip_management = SIPManagement()
+        self.telephony_service = TelephonyService()
         self.recording_events = RecordingEventsService()
 
         self._filter_regex = None
@@ -245,12 +245,12 @@ class LiveKitEventsService:
         except models.Room.DoesNotExist as err:
             raise ActionFailedError(f"Room with ID {room_id} does not exist") from err
 
-        if settings.ROOM_TELEPHONY_ENABLED or settings.ROOMKIT_ENABLED:
+        if settings.ROOM_TELEPHONY_ENABLED:
             try:
-                self.sip_management.ensure_dispatch_rule(room)
+                self.telephony_service.create_dispatch_rule(room)
-            except SIPException as e:
+            except TelephonyException as e:
                 raise ActionFailedError(
-                    f"Failed to create sip dispatch rule for room {room_id}"
+                    f"Failed to create telephony dispatch rule for room {room_id}"
                 ) from e
 
     def _handle_room_finished(self, data):
@@ -265,12 +265,12 @@ class LiveKitEventsService:
             )
             raise ActionFailedError("Failed to process room finished event") from e
 
-        if settings.ROOM_TELEPHONY_ENABLED or settings.ROOMKIT_ENABLED:
+        if settings.ROOM_TELEPHONY_ENABLED:
             try:
-                self.sip_management.delete_dispatch_rule(room_id)
+                self.telephony_service.delete_dispatch_rule(room_id)
-            except SIPException as e:
+            except TelephonyException as e:
                 raise ActionFailedError(
-                    f"Failed to delete sip dispatch rule for room {room_id}"
+                    f"Failed to delete telephony dispatch rule for room {room_id}"
                 ) from e
 
         try:

src/backend/core/services/telephony.py

@@ -1,9 +1,9 @@
-"""SIP management service for managing SIP dispatch rules for room access."""
+"""Telephony service for managing SIP dispatch rules for room access."""
 
 from logging import getLogger
 
 from asgiref.sync import async_to_sync
-from livekit.api import TwirpError, TwirpErrorCode
+from livekit.api import TwirpError
 from livekit.protocol.sip import (
     CreateSIPDispatchRuleRequest,
     DeleteSIPDispatchRuleRequest,
@@ -17,16 +17,12 @@ from core import utils
 logger = getLogger(__name__)
 
 
-class SIPException(Exception):
+class TelephonyException(Exception):
-    """Exception raised when SIP operations fail."""
+    """Exception raised when telephony operations fail."""
 
 
-class DispatchRuleConflictError(SIPException):
+class TelephonyService:
-    """Raised when a dispatch rule already exists for the same routing criteria."""
+    """Service for managing participant access through the telephony system (SIP)."""
-
-
-class SIPManagement:
-    """Service for managing SIP access through the telephony or roomkit system (SIP)."""
 
     def _rule_name(self, room_id):
         """Generate the rule name for a room based on its ID."""
@@ -36,7 +32,7 @@ class SIPManagement:
     async def create_dispatch_rule(self, room):
         """Create a SIP inbound dispatch rule for direct room routing.
 
-        Configures livekit-sip to route incoming SIP calls directly to the specified room
+        Configures telephony to route incoming SIP calls directly to the specified room
         using the room's ID and PIN code for authentication.
         """
 
@@ -55,12 +51,10 @@ class SIPManagement:
         try:
             await lkapi.sip.create_sip_dispatch_rule(create=request)
         except TwirpError as e:
-            if e.code == TwirpErrorCode.ALREADY_EXISTS:
-                raise DispatchRuleConflictError("Dispatch rule already exists") from e
             logger.exception(
                 "Unexpected error creating dispatch rule for room %s", room.id
             )
-            raise SIPException("Could not create dispatch rule") from e
+            raise TelephonyException("Could not create dispatch rule") from e
 
         finally:
             await lkapi.aclose()
@@ -85,7 +79,7 @@ class SIPManagement:
             )
         except TwirpError as e:
             logger.exception("Failed to list dispatch rules for room %s", room_id)
-            raise SIPException("Could not list dispatch rules") from e
+            raise TelephonyException("Could not list dispatch rules") from e
         finally:
             await lkapi.aclose()
 
@@ -100,28 +94,6 @@ class SIPManagement:
             if existing_rule.name == rule_name
         ]
 
-    @async_to_sync
-    async def has_dispatch_rule(self, room_id):
-        """Check whether at least one dispatch rule exists for a specific room."""
-        return bool(await self._list_dispatch_rules_ids(room_id))
-
-    def ensure_dispatch_rule(self, room):
-        """Create the SIP dispatch rule for a room if it does not already exist.
-
-        Returns:
-            bool: True if a rule was created, False if it already existed.
-        """
-
-        if self.has_dispatch_rule(room.pk):
-            return False
-
-        try:
-            self.create_dispatch_rule(room)
-        except DispatchRuleConflictError:
-            return False
-
-        return True
-
     @async_to_sync
     async def delete_dispatch_rule(self, room_id):
         """Delete all SIP inbound dispatch rules associated with a specific room."""
@@ -146,7 +118,7 @@ class SIPManagement:
 
         except TwirpError as e:
             logger.exception("Failed to delete dispatch rules for room %s", room_id)
-            raise SIPException("Could not delete dispatch rules") from e
+            raise TelephonyException("Could not delete dispatch rules") from e
 
         finally:
             await lkapi.aclose()

src/backend/core/services/transit_code.py

@@ -0,0 +1,74 @@
+"""Service handling the lifecycle of transit codes.
+
+A transit code is an opaque, cryptographically random, single-use code
+handed to an embedded frontend (through a URL fragment) so it can obtain a
+user access token on the core API without a session cookie. The code
+carries no information by itself: everything it references (user, client)
+is stored server-side in the cache, and consumed atomically on exchange.
+"""
+
+import hashlib
+import secrets
+
+from django.conf import settings
+from django.core.cache import cache
+
+
+class TransitCodeService:
+    """Create and consume single-use transit codes."""
+
+    @staticmethod
+    def _cache_key(code):
+        """Build the cache key for a code.
+
+        The code is hashed so that a dump of the cache never reveals
+        directly usable codes.
+        """
+        digest = hashlib.sha256(code.encode("utf-8")).hexdigest()
+        return f"{settings.TRANSIT_CODE_CACHE_PREFIX}:{digest}"
+
+    def create_code(self, user, client_id="unknown"):
+        """Generate a transit code for a user, and store it.
+
+        The code expires after TRANSIT_CODE_TTL seconds.
+
+        Returns:
+            str: The opaque code to hand to the client.
+        """
+        # Default 48 random bytes -> 64 url-safe characters, 384 bits of
+        # entropy: unguessable and safe to transit through a URL fragment.
+        code = secrets.token_urlsafe(settings.TRANSIT_CODE_NBYTES)
+
+        cache.set(
+            self._cache_key(code),
+            {
+                "user_id": str(user.id),
+                "client_id": client_id,
+            },
+            timeout=settings.TRANSIT_CODE_TTL,
+        )
+
+        return code
+
+    def consume_code(self, code):
+        """Consume a transit code, enforcing single use.
+
+        The code is deleted from the cache upon consumption. `cache.delete`
+        returns whether a key was actually deleted, so if two requests race
+        on the same code, only one of them wins.
+
+        Returns:
+            dict | None: The data stored at creation time ('user_id',
+                'client_id'), or None if the code is unknown, expired or
+                already consumed.
+        """
+        if not code:
+            return None
+
+        key = self._cache_key(code)
+        data = cache.get(key)
+
+        if data is None or not cache.delete(key):
+            return None
+
+        return data

src/backend/core/tests/roomkit/__init__.py

@@ -1 +0,0 @@
-"""Tests for the roomkit API of the Meet core app."""

src/backend/core/tests/roomkit/test_api_roomkit_join.py

@@ -1,266 +0,0 @@
-"""
-Test the roomkit join server-to-server API endpoint.
-"""
-
-# pylint: disable=redefined-outer-name,unused-argument
-
-from unittest import mock
-
-import pytest
-
-from ...factories import RoomFactory
-from ...services.sip_management import SIPException
-
-pytestmark = pytest.mark.django_db
-
-
-@pytest.fixture
-def mock_sip_management():
-    """Mock the SIPManagement used by the roomkit viewset."""
-    with mock.patch("core.roomkit.viewsets.SIPManagement") as mock_service_class:
-        yield mock_service_class.return_value
-
-
-def test_join_anonymous(settings, mock_sip_management, client):
-    """Requests without an Authorization header should be rejected."""
-    settings.ROOMKIT_ENABLED = True
-    settings.ROOMKIT_SERVER_TO_SERVER_API_TOKEN = "testAuthToken"
-
-    room = RoomFactory(pin_code="1234567890")
-
-    response = client.post("/api/v1.0/roomkit/join/", {"pin_code": room.pin_code})
-
-    assert response.status_code == 401
-    assert response.json() == {"detail": "Authorization header is missing."}
-    mock_sip_management.ensure_dispatch_rule.assert_not_called()
-
-
-def test_join_malformed_authorization_header(settings, mock_sip_management, client):
-    """Requests with a malformed Authorization header should be rejected."""
-    settings.ROOMKIT_ENABLED = True
-    settings.ROOMKIT_SERVER_TO_SERVER_API_TOKEN = "testAuthToken"
-
-    room = RoomFactory(pin_code="1234567890")
-
-    response = client.post(
-        "/api/v1.0/roomkit/join/",
-        {"pin_code": room.pin_code},
-        HTTP_AUTHORIZATION="testAuthToken",
-    )
-
-    assert response.status_code == 401
-    assert response.json() == {"detail": "Invalid authorization header."}
-    mock_sip_management.ensure_dispatch_rule.assert_not_called()
-
-
-def test_join_wrong_bearer(settings, mock_sip_management, client):
-    """Requests with an incorrect bearer token should be rejected."""
-    settings.ROOMKIT_ENABLED = True
-    settings.ROOMKIT_SERVER_TO_SERVER_API_TOKEN = "testAuthToken"
-
-    room = RoomFactory(pin_code="1234567890")
-
-    response = client.post(
-        "/api/v1.0/roomkit/join/",
-        {"pin_code": room.pin_code},
-        HTTP_AUTHORIZATION="Bearer wrongAuthToken",
-    )
-
-    assert response.status_code == 401
-    assert response.json() == {"detail": "Invalid server-to-server token."}
-    mock_sip_management.ensure_dispatch_rule.assert_not_called()
-
-
-def test_join_token_not_configured(settings, mock_sip_management, client):
-    """Requests should be rejected when no server-to-server token is configured."""
-
-    settings.ROOMKIT_ENABLED = True
-    settings.ROOMKIT_SERVER_TO_SERVER_API_TOKEN = None
-
-    room = RoomFactory(pin_code="1234567890")
-
-    response = client.post(
-        "/api/v1.0/roomkit/join/",
-        {"pin_code": room.pin_code},
-        HTTP_AUTHORIZATION="Bearer testAuthToken",
-    )
-
-    assert response.status_code == 401
-    mock_sip_management.ensure_dispatch_rule.assert_not_called()
-
-
-def test_join_roomkit_disabled(settings, mock_sip_management, client):
-    """The endpoint should not be exposed when the roomkit integration is disabled."""
-
-    settings.ROOMKIT_ENABLED = False
-    settings.ROOMKIT_SERVER_TO_SERVER_API_TOKEN = "testAuthToken"
-
-    room = RoomFactory(pin_code="1234567890")
-
-    response = client.post(
-        "/api/v1.0/roomkit/join/",
-        {"pin_code": room.pin_code},
-        HTTP_AUTHORIZATION="Bearer testAuthToken",
-    )
-
-    assert response.status_code == 404
-    mock_sip_management.ensure_dispatch_rule.assert_not_called()
-
-
-def test_join_missing_pin(settings, mock_sip_management, client):
-    """Requests without a PIN code should be rejected."""
-
-    settings.ROOMKIT_ENABLED = True
-    settings.ROOMKIT_SERVER_TO_SERVER_API_TOKEN = "testAuthToken"
-
-    response = client.post(
-        "/api/v1.0/roomkit/join/",
-        {},
-        HTTP_AUTHORIZATION="Bearer testAuthToken",
-    )
-
-    assert response.status_code == 400
-    assert response.json() == {"pin_code": ["This field is required."]}
-    mock_sip_management.ensure_dispatch_rule.assert_not_called()
-
-
-def test_join_blank_pin(settings, mock_sip_management, client):
-    """Requests with a blank PIN code should be rejected."""
-
-    settings.ROOMKIT_ENABLED = True
-    settings.ROOMKIT_SERVER_TO_SERVER_API_TOKEN = "testAuthToken"
-
-    response = client.post(
-        "/api/v1.0/roomkit/join/",
-        {"pin_code": ""},
-        HTTP_AUTHORIZATION="Bearer testAuthToken",
-    )
-
-    assert response.status_code == 400
-    assert response.json() == {"pin_code": ["This field may not be blank."]}
-    mock_sip_management.ensure_dispatch_rule.assert_not_called()
-
-
-def test_join_wrong_pin_length(settings, mock_sip_management, client):
-    """Requests with a PIN code of unexpected length should be rejected."""
-
-    settings.ROOMKIT_ENABLED = True
-    settings.ROOMKIT_SERVER_TO_SERVER_API_TOKEN = "testAuthToken"
-    settings.ROOM_TELEPHONY_PIN_LENGTH = 10
-
-    response = client.post(
-        "/api/v1.0/roomkit/join/",
-        {"pin_code": "123"},
-        HTTP_AUTHORIZATION="Bearer testAuthToken",
-    )
-
-    assert response.status_code == 400
-    assert response.json() == {"pin_code": ["PIN code length is invalid."]}
-    mock_sip_management.ensure_dispatch_rule.assert_not_called()
-
-
-def test_join_unknown_pin(settings, mock_sip_management, client):
-    """Requests with a PIN matching no room should return 404 and create no rule."""
-    settings.ROOMKIT_ENABLED = True
-    settings.ROOMKIT_SERVER_TO_SERVER_API_TOKEN = "testAuthToken"
-
-    RoomFactory(pin_code="1234567890")
-
-    response = client.post(
-        "/api/v1.0/roomkit/join/",
-        {"pin_code": "0987654321"},
-        HTTP_AUTHORIZATION="Bearer testAuthToken",
-    )
-
-    assert response.status_code == 404
-    assert response.json() == {"detail": "No room found for this PIN code."}
-    mock_sip_management.ensure_dispatch_rule.assert_not_called()
-
-
-def test_join_success(settings, mock_sip_management, client):
-    """Requests with a valid PIN should create the dispatch rule."""
-    settings.ROOMKIT_ENABLED = True
-    settings.ROOMKIT_SERVER_TO_SERVER_API_TOKEN = "testAuthToken"
-
-    room = RoomFactory(pin_code="1234567890")
-    mock_sip_management.ensure_dispatch_rule.return_value = True
-
-    response = client.post(
-        "/api/v1.0/roomkit/join/",
-        {"pin_code": room.pin_code},
-        HTTP_AUTHORIZATION="Bearer testAuthToken",
-    )
-
-    assert response.status_code == 200
-    assert response.json() == {"status": "success"}
-    mock_sip_management.ensure_dispatch_rule.assert_called_once_with(room)
-
-
-def test_join_dispatch_rule_already_exists(settings, mock_sip_management, client):
-    """Requests should succeed when the dispatch rule already exists (idempotency)."""
-
-    settings.ROOMKIT_ENABLED = True
-    settings.ROOMKIT_SERVER_TO_SERVER_API_TOKEN = "testAuthToken"
-
-    room = RoomFactory(pin_code="1234567890")
-    mock_sip_management.ensure_dispatch_rule.return_value = False
-
-    response = client.post(
-        "/api/v1.0/roomkit/join/",
-        {"pin_code": room.pin_code},
-        HTTP_AUTHORIZATION="Bearer testAuthToken",
-    )
-
-    assert response.status_code == 200
-    assert response.json() == {"status": "success"}
-    mock_sip_management.ensure_dispatch_rule.assert_called_once_with(room)
-
-
-def test_join_tracks_analytics_event(settings, mock_sip_management, client):
-    """Successful joins should be tracked with an analytics event."""
-
-    settings.ROOMKIT_ENABLED = True
-    settings.ROOMKIT_SERVER_TO_SERVER_API_TOKEN = "testAuthToken"
-
-    room = RoomFactory(pin_code="1234567890")
-    mock_sip_management.ensure_dispatch_rule.return_value = True
-
-    with mock.patch("core.roomkit.viewsets.analytics.capture") as mock_capture:
-        response = client.post(
-            "/api/v1.0/roomkit/join/",
-            {"pin_code": room.pin_code},
-            HTTP_AUTHORIZATION="Bearer testAuthToken",
-        )
-
-    assert response.status_code == 200
-    mock_capture.assert_called_once()
-    _user, event, properties = mock_capture.call_args[0]
-    assert str(event) == "roomkit_joined"
-    assert properties == {
-        "room_id": str(room.pk),
-        "dispatch_rule_created": True,
-    }
-
-
-def test_join_sip_failure(settings, mock_sip_management, client):
-    """Requests should fail with a server error when the sip management service fails."""
-
-    settings.ROOMKIT_ENABLED = True
-    settings.ROOMKIT_SERVER_TO_SERVER_API_TOKEN = "testAuthToken"
-
-    room = RoomFactory(pin_code="1234567890")
-    mock_sip_management.ensure_dispatch_rule.side_effect = SIPException(
-        "Could not create dispatch rule"
-    )
-
-    with mock.patch("core.roomkit.viewsets.analytics.capture") as mock_capture:
-        response = client.post(
-            "/api/v1.0/roomkit/join/",
-            {"pin_code": room.pin_code},
-            HTTP_AUTHORIZATION="Bearer testAuthToken",
-            raise_request_exception=False,
-        )
-
-    assert response.status_code == 500
-    mock_sip_management.ensure_dispatch_rule.assert_called_once_with(room)
-    mock_capture.assert_not_called()

src/backend/core/tests/rooms/test_api_rooms_create.py

@@ -2,9 +2,14 @@
 Test rooms API endpoints in the Meet core app: create.
 """
 
+from datetime import datetime, timedelta, timezone
+
+from django.conf import settings as django_settings
+
 # pylint: disable=redefined-outer-name,unused-argument
 from django.core.cache import cache
 
+import jwt
 import pytest
 from rest_framework.test import APIClient
 
@@ -109,3 +114,38 @@ def test_api_rooms_create_authenticated_existing_slug():
 
     assert response.status_code == 400
     assert response.json() == {"slug": ["Room with this Slug already exists."]}
+
+
+def generate_user_access_token(user):
+    """Generate a valid user access JWT signed with the token secret."""
+    now = datetime.now(timezone.utc)
+
+    payload = {
+        "iss": django_settings.USER_ACCESS_TOKEN_ISSUER,
+        "aud": django_settings.USER_ACCESS_TOKEN_AUDIENCE,
+        "iat": now,
+        "exp": now + timedelta(seconds=django_settings.USER_ACCESS_TOKEN_TTL),
+        "user_id": str(user.id),
+        "token_type": "user_access",
+        "client_id": "test-app",
+        "scope": "user:access",
+    }
+
+    return jwt.encode(
+        payload,
+        django_settings.USER_ACCESS_TOKEN_SECRET_KEY,
+        algorithm=django_settings.USER_ACCESS_TOKEN_ALG,
+    )
+
+
+def test_api_rooms_create_authenticated_with_user_access_token():
+    """A user access token should create a room exactly like a session would."""
+    user = UserFactory()
+
+    client = APIClient()
+    client.credentials(HTTP_AUTHORIZATION=f"Bearer {generate_user_access_token(user)}")
+    response = client.post("/api/v1.0/rooms/", {"name": "my room"})
+
+    assert response.status_code == 201
+    room = Room.objects.get()
+    assert room.accesses.filter(role="owner", user=user).exists()

src/backend/core/tests/rooms/test_api_rooms_list.py

@@ -2,8 +2,12 @@
 Test rooms API endpoints in the Meet core app: list.
 """
 
+from datetime import datetime, timedelta, timezone
 from unittest import mock
 
+from django.conf import settings as django_settings
+
+import jwt
 import pytest
 from rest_framework.pagination import PageNumberPagination
 from rest_framework.test import APIClient
@@ -156,3 +160,40 @@ def test_api_rooms_list_pagination_page_size():
     assert len(content["results"]) == 3
     assert content["next"] == "http://testserver/api/v1.0/rooms/?page=2&page_size=3"
     assert content["previous"] is None
+
+
+def generate_user_access_token(user):
+    """Generate a valid user access JWT signed with the token secret."""
+    now = datetime.now(timezone.utc)
+
+    payload = {
+        "iss": django_settings.USER_ACCESS_TOKEN_ISSUER,
+        "aud": django_settings.USER_ACCESS_TOKEN_AUDIENCE,
+        "iat": now,
+        "exp": now + timedelta(seconds=django_settings.USER_ACCESS_TOKEN_TTL),
+        "user_id": str(user.id),
+        "token_type": "user_access",
+        "client_id": "test-app",
+        "scope": "user:access",
+    }
+
+    return jwt.encode(
+        payload,
+        django_settings.USER_ACCESS_TOKEN_SECRET_KEY,
+        algorithm=django_settings.USER_ACCESS_TOKEN_ALG,
+    )
+
+
+def test_api_rooms_list_authenticated_with_user_access_token():
+    """A user access token should list rooms exactly like a session would."""
+    user = UserFactory()
+    room = RoomFactory(users=[(user, "owner")])
+    RoomFactory()  # another user's room, not listed
+
+    client = APIClient()
+    client.credentials(HTTP_AUTHORIZATION=f"Bearer {generate_user_access_token(user)}")
+    response = client.get("/api/v1.0/rooms/")
+
+    assert response.status_code == 200
+    assert response.data["count"] == 1
+    assert response.data["results"][0]["id"] == str(room.id)

src/backend/core/tests/rooms/test_api_rooms_retrieve.py

@@ -3,11 +3,14 @@ Test rooms API endpoints in the Meet core app: retrieve.
 """
 
 import random
+from datetime import datetime, timedelta, timezone
 from unittest import mock
 
+from django.conf import settings as django_settings
 from django.contrib.auth.models import AnonymousUser
 from django.test.utils import override_settings
 
+import jwt
 import pytest
 from rest_framework.test import APIClient
 
@@ -503,3 +506,40 @@ def test_api_rooms_retrieve_administrators(
         role=str(user_access.role),
         participant_id=None,
     )
+
+
+def generate_user_access_token(user):
+    """Generate a valid user access JWT signed with the token secret."""
+    now = datetime.now(timezone.utc)
+
+    payload = {
+        "iss": django_settings.USER_ACCESS_TOKEN_ISSUER,
+        "aud": django_settings.USER_ACCESS_TOKEN_AUDIENCE,
+        "iat": now,
+        "exp": now + timedelta(seconds=django_settings.USER_ACCESS_TOKEN_TTL),
+        "user_id": str(user.id),
+        "token_type": "user_access",
+        "client_id": "test-app",
+        "scope": "user:access",
+    }
+
+    return jwt.encode(
+        payload,
+        django_settings.USER_ACCESS_TOKEN_SECRET_KEY,
+        algorithm=django_settings.USER_ACCESS_TOKEN_ALG,
+    )
+
+
+def test_api_rooms_retrieve_authenticated_with_user_access_token():
+    """A user access token should retrieve a room exactly like a session would."""
+    user = UserFactory()
+    room = RoomFactory(users=[(user, "owner")])
+
+    client = APIClient()
+    client.credentials(HTTP_AUTHORIZATION=f"Bearer {generate_user_access_token(user)}")
+    response = client.get(f"/api/v1.0/rooms/{room.id!s}/")
+
+    assert response.status_code == 200
+    assert response.data["id"] == str(room.id)
+    # Authenticated as the owner: privileged fields are included
+    assert response.data["pin_code"] == room.pin_code

src/backend/core/tests/rooms/test_api_rooms_update.py

@@ -3,8 +3,12 @@ Test rooms API endpoints in the Meet core app: update.
 """
 
 import random
+from datetime import datetime, timedelta, timezone
 from unittest.mock import patch
 
+from django.conf import settings as django_settings
+
+import jwt
 import pytest
 from rest_framework.test import APIClient
 
@@ -437,3 +441,45 @@ def test_api_rooms_update_livekit_sync_failure(mock_update_metadata):
             "configuration": {"can_publish_sources": ["camera"]},
         },
     )
+
+
+def generate_user_access_token(user):
+    """Generate a valid user access JWT signed with the token secret."""
+    now = datetime.now(timezone.utc)
+
+    payload = {
+        "iss": django_settings.USER_ACCESS_TOKEN_ISSUER,
+        "aud": django_settings.USER_ACCESS_TOKEN_AUDIENCE,
+        "iat": now,
+        "exp": now + timedelta(seconds=django_settings.USER_ACCESS_TOKEN_TTL),
+        "user_id": str(user.id),
+        "token_type": "user_access",
+        "client_id": "test-app",
+        "scope": "user:access",
+    }
+
+    return jwt.encode(
+        payload,
+        django_settings.USER_ACCESS_TOKEN_SECRET_KEY,
+        algorithm=django_settings.USER_ACCESS_TOKEN_ALG,
+    )
+
+
+def test_api_rooms_update_authenticated_with_user_access_token():
+    """Role-based permissions apply unchanged with a user access token."""
+    user = UserFactory()
+    room = RoomFactory(users=[(user, "member")])
+
+    client = APIClient()
+    client.credentials(HTTP_AUTHORIZATION=f"Bearer {generate_user_access_token(user)}")
+
+    # A simple member cannot update the room
+    response = client.patch(f"/api/v1.0/rooms/{room.id!s}/", {"name": "new name"})
+    assert response.status_code == 403
+
+    # An administrator can
+    room.accesses.filter(user=user).update(role="administrator")
+    response = client.patch(f"/api/v1.0/rooms/{room.id!s}/", {"name": "new name"})
+    assert response.status_code == 200
+    room.refresh_from_db()
+    assert room.name == "new name"

src/backend/core/tests/services/test_livekit_events.py

@@ -21,10 +21,7 @@ from core.services.livekit_events import (
 )
 from core.services.lobby import LobbyService
 from core.services.room_management import RoomManagementException
-from core.services.sip_management import (
+from core.services.telephony import TelephonyException, TelephonyService
-    SIPException,
-    SIPManagement,
-)
 from core.utils import NotificationError
 
 pytestmark = pytest.mark.django_db
@@ -62,7 +59,7 @@ def test_initialization(
     mock_token_verifier.assert_called_once_with(api_key, api_secret)
     mock_webhook_receiver.assert_called_once_with(mock_token_verifier.return_value)
     assert isinstance(service.lobby_service, LobbyService)
-    assert isinstance(service.sip_management, SIPManagement)
+    assert isinstance(service.telephony_service, TelephonyService)
     assert isinstance(service.recording_events, RecordingEventsService)
 
 
@@ -472,11 +469,11 @@ def test_handle_egress_ended_ignores_non_savable_recording(
 
 
 @mock.patch.object(LobbyService, "clear_room_cache")
-@mock.patch.object(SIPManagement, "delete_dispatch_rule")
+@mock.patch.object(TelephonyService, "delete_dispatch_rule")
 def test_handle_room_finished_clears_cache_and_deletes_dispatch_rule(
     mock_delete_dispatch_rule, mock_clear_cache, service, settings
 ):
-    """Should clear lobby cache and delete SIP dispatch rule when room finishes."""
+    """Should clear lobby cache and delete telephony dispatch rule when room finishes."""
     settings.ROOM_TELEPHONY_ENABLED = True
     mock_room_name = uuid.uuid4()
     mock_data = mock.MagicMock()
@@ -489,31 +486,12 @@ def test_handle_room_finished_clears_cache_and_deletes_dispatch_rule(
 
 
 @mock.patch.object(LobbyService, "clear_room_cache")
-@mock.patch.object(SIPManagement, "delete_dispatch_rule")
+@mock.patch.object(TelephonyService, "delete_dispatch_rule")
-def test_handle_room_finished_deletes_dispatch_rule_when_only_roomkit_enabled(
-    mock_delete_dispatch_rule, mock_clear_cache, service, settings
-):
-    """Should delete dispatch rule when only roomkit is enabled when room finishes."""
-    settings.ROOM_TELEPHONY_ENABLED = False
-    settings.ROOMKIT_ENABLED = True
-    mock_room_name = uuid.uuid4()
-    mock_data = mock.MagicMock()
-    mock_data.room.name = str(mock_room_name)
-
-    service._handle_room_finished(mock_data)
-
-    mock_delete_dispatch_rule.assert_called_once_with(mock_room_name)
-    mock_clear_cache.assert_called_once_with(mock_room_name)
-
-
-@mock.patch.object(LobbyService, "clear_room_cache")
-@mock.patch.object(SIPManagement, "delete_dispatch_rule")
 def test_handle_room_finished_skips_telephony_when_disabled(
     mock_delete_dispatch_rule, mock_clear_cache, service, settings
 ):
     """Should clear lobby cache but skip dispatch rule deletion when telephony is disabled."""
     settings.ROOM_TELEPHONY_ENABLED = False
-    settings.ROOMKIT_ENABLED = False
     mock_room_name = uuid.uuid4()
     mock_data = mock.MagicMock()
     mock_data.room.name = str(mock_room_name)
@@ -527,7 +505,7 @@ def test_handle_room_finished_skips_telephony_when_disabled(
 @mock.patch.object(
     LobbyService, "clear_room_cache", side_effect=Exception("Test error")
 )
-@mock.patch.object(SIPManagement, "delete_dispatch_rule")
+@mock.patch.object(TelephonyService, "delete_dispatch_rule")
 def test_handle_room_finished_raises_error_when_cache_clearing_fails(
     mock_delete_dispatch_rule, mock_clear_cache, service, settings
 ):
@@ -550,9 +528,9 @@ def test_handle_room_finished_raises_error_when_cache_clearing_fails(
 
 @mock.patch.object(LobbyService, "clear_room_cache")
 @mock.patch.object(
-    SIPManagement,
+    TelephonyService,
     "delete_dispatch_rule",
-    side_effect=SIPException("Test error"),
+    side_effect=TelephonyException("Test error"),
 )
 def test_handle_room_finished_raises_error_when_telephony_deletion_fails(
     mock_delete_dispatch_rule, mock_clear_cache, service, settings
@@ -563,7 +541,7 @@ def test_handle_room_finished_raises_error_when_telephony_deletion_fails(
     mock_data.room.name = "00000000-0000-0000-0000-000000000000"
 
     expected_error = (
-        "Failed to delete sip dispatch rule for room "
+        "Failed to delete telephony dispatch rule for room "
         "00000000-0000-0000-0000-000000000000"
     )
 
@@ -584,11 +562,11 @@ def test_handle_room_finished_raises_error_for_invalid_room_name(service):
         service._handle_room_finished(mock_data)
 
 
-@mock.patch.object(SIPManagement, "ensure_dispatch_rule")
+@mock.patch.object(TelephonyService, "create_dispatch_rule")
 def test_handle_room_started_creates_dispatch_rule_successfully(
-    mock_ensure_dispatch_rule, service, settings
+    mock_create_dispatch_rule, service, settings
 ):
-    """Should ensure the SIP dispatch rule exists when room starts successfully."""
+    """Should create telephony dispatch rule when room starts successfully."""
     settings.ROOM_TELEPHONY_ENABLED = True
     room = RoomFactory()
     mock_data = mock.MagicMock()
@@ -596,75 +574,22 @@ def test_handle_room_started_creates_dispatch_rule_successfully(
 
     service._handle_room_started(mock_data)
 
-    mock_ensure_dispatch_rule.assert_called_once_with(room)
+    mock_create_dispatch_rule.assert_called_once_with(room)
 
 
-@mock.patch.object(SIPManagement, "ensure_dispatch_rule")
+@mock.patch.object(TelephonyService, "create_dispatch_rule")
-def test_handle_room_started_creates_dispatch_rule_when_only_roomkit_enabled(
-    mock_ensure_dispatch_rule, service, settings
-):
-    """Should ensure the dispatch rule exists when only roomkit is enabled during room start."""
-    settings.ROOM_TELEPHONY_ENABLED = False
-    settings.ROOMKIT_ENABLED = True
-    room = RoomFactory()
-    mock_data = mock.MagicMock()
-    mock_data.room.name = str(room.id)
-
-    service._handle_room_started(mock_data)
-
-    mock_ensure_dispatch_rule.assert_called_once_with(room)
-
-
-@mock.patch.object(SIPManagement, "ensure_dispatch_rule", return_value=False)
-def test_handle_room_started_ignores_existing_dispatch_rule(
-    mock_ensure_dispatch_rule, service, settings
-):
-    """Should proceed silently when the dispatch rule already exists when room starts."""
-    settings.ROOM_TELEPHONY_ENABLED = True
-    room = RoomFactory()
-    mock_data = mock.MagicMock()
-    mock_data.room.name = str(room.id)
-
-    # ensure_dispatch_rule reports the rule as pre-existing: nothing to raise
-    service._handle_room_started(mock_data)
-
-    mock_ensure_dispatch_rule.assert_called_once_with(room)
-
-
-@mock.patch.object(
-    SIPManagement,
-    "ensure_dispatch_rule",
-    side_effect=SIPException("Test error"),
-)
-def test_handle_room_started_raises_error_when_dispatch_rule_creation_fails(
-    mock_ensure_dispatch_rule, service, settings
-):
-    """Should raise ActionFailedError when ensuring the dispatch rule fails when room starts."""
-    settings.ROOM_TELEPHONY_ENABLED = True
-    room = RoomFactory()
-    mock_data = mock.MagicMock()
-    mock_data.room.name = str(room.id)
-
-    expected_error = f"Failed to create sip dispatch rule for room {room.id}"
-
-    with pytest.raises(ActionFailedError, match=expected_error):
-        service._handle_room_started(mock_data)
-
-
-@mock.patch.object(SIPManagement, "ensure_dispatch_rule")
 def test_handle_room_started_skips_dispatch_rule_when_telephony_disabled(
-    mock_ensure_dispatch_rule, service, settings
+    mock_create_dispatch_rule, service, settings
 ):
-    """Should skip ensuring the SIP dispatch rule when telephony is disabled during room start."""
+    """Should skip creating telephony dispatch rule when telephony is disabled during room start."""
     settings.ROOM_TELEPHONY_ENABLED = False
-    settings.ROOMKIT_ENABLED = False
     room = RoomFactory()
     mock_data = mock.MagicMock()
     mock_data.room.name = str(room.id)
 
     service._handle_room_started(mock_data)
 
-    mock_ensure_dispatch_rule.assert_not_called()
+    mock_create_dispatch_rule.assert_not_called()
 
 
 def test_handle_room_started_raises_error_for_invalid_room_name(service):

src/backend/core/tests/services/test_telephony_service.py

@@ -1,5 +1,5 @@
 """
-Test SIP mamagement service.
+Test telephony service.
 """
 
 # pylint: disable=W0212
@@ -20,11 +20,7 @@ from livekit.protocol.sip import (
 
 from core.factories import RoomFactory
 from core.models import RoomAccessLevel
-from core.services.sip_management import (
+from core.services.telephony import TelephonyException, TelephonyService
-    DispatchRuleConflictError,
-    SIPException,
-    SIPManagement,
-)
 
 pytestmark = pytest.mark.django_db
 
@@ -39,9 +35,9 @@ def create_mock_livekit_client():
 
 def test_rule_name():
     """Test rule name generation."""
-    sip_management = SIPManagement()
+    telephony_service = TelephonyService()
     room = RoomFactory(access_level=RoomAccessLevel.RESTRICTED, pin_code="1234")
-    rule_name = sip_management._rule_name(room.id)
+    rule_name = telephony_service._rule_name(room.id)
 
     assert rule_name == f"SIP_{str(room.id)}"
 
@@ -49,14 +45,14 @@ def test_rule_name():
 @mock.patch("core.utils.create_livekit_client")
 def test_create_dispatch_rule_success(mock_client_factory):
     """Test successful dispatch rule creation."""
-    sip_management = SIPManagement()
+    telephony_service = TelephonyService()
     room = RoomFactory(access_level=RoomAccessLevel.RESTRICTED, pin_code="1234")
 
     mock_api = create_mock_livekit_client()
     mock_api.sip.create_sip_dispatch_rule = mock.AsyncMock()
     mock_client_factory.return_value = mock_api
 
-    sip_management.create_dispatch_rule(room)
+    telephony_service.create_dispatch_rule(room)
 
     mock_api.sip.create_sip_dispatch_rule.assert_called_once()
     create_request = mock_api.sip.create_sip_dispatch_rule.call_args[1]["create"]
@@ -71,7 +67,7 @@ def test_create_dispatch_rule_success(mock_client_factory):
 @mock.patch("core.utils.create_livekit_client")
 def test_create_dispatch_rule_api_failure(mock_client_factory):
     """Test dispatch rule creation when API fails."""
-    sip_management = SIPManagement()
+    telephony_service = TelephonyService()
     room = RoomFactory(access_level=RoomAccessLevel.RESTRICTED, pin_code="1234")
 
     mock_api = create_mock_livekit_client()
@@ -80,8 +76,8 @@ def test_create_dispatch_rule_api_failure(mock_client_factory):
     )
     mock_client_factory.return_value = mock_api
 
-    with pytest.raises(SIPException, match="Could not create dispatch rule"):
+    with pytest.raises(TelephonyException, match="Could not create dispatch rule"):
-        sip_management.create_dispatch_rule(room)
+        telephony_service.create_dispatch_rule(room)
 
     mock_api.sip.create_sip_dispatch_rule.assert_called_once()
     mock_api.aclose.assert_called_once()
@@ -90,7 +86,7 @@ def test_create_dispatch_rule_api_failure(mock_client_factory):
 @mock.patch("core.utils.create_livekit_client")
 def test_list_dispatch_rules_ids_success(mock_client_factory):
     """Test successful listing of dispatch rule IDs."""
-    sip_management = SIPManagement()
+    telephony_service = TelephonyService()
     room = RoomFactory(access_level=RoomAccessLevel.RESTRICTED, pin_code="1234")
 
     mock_rules = [
@@ -115,7 +111,7 @@ def test_list_dispatch_rules_ids_success(mock_client_factory):
     )
     mock_client_factory.return_value = mock_api
 
-    result = async_to_sync(sip_management._list_dispatch_rules_ids)(room.id)
+    result = async_to_sync(telephony_service._list_dispatch_rules_ids)(room.id)
 
     assert len(result) == 2
     assert "rule-1" in result
@@ -131,7 +127,7 @@ def test_list_dispatch_rules_ids_success(mock_client_factory):
 @mock.patch("core.utils.create_livekit_client")
 def test_list_dispatch_rules_ids_empty_response(mock_client_factory):
     """Test listing dispatch rule IDs when no rules exist."""
-    sip_management = SIPManagement()
+    telephony_service = TelephonyService()
     room = RoomFactory(access_level=RoomAccessLevel.RESTRICTED, pin_code="1234")
 
     mock_api = create_mock_livekit_client()
@@ -140,7 +136,7 @@ def test_list_dispatch_rules_ids_empty_response(mock_client_factory):
     )
     mock_client_factory.return_value = mock_api
 
-    result = async_to_sync(sip_management._list_dispatch_rules_ids)(room.id)
+    result = async_to_sync(telephony_service._list_dispatch_rules_ids)(room.id)
 
     assert result == []
     mock_api.aclose.assert_called_once()
@@ -149,7 +145,7 @@ def test_list_dispatch_rules_ids_empty_response(mock_client_factory):
 @mock.patch("core.utils.create_livekit_client")
 def test_list_dispatch_rules_ids_no_matching_rules(mock_client_factory):
     """Test listing dispatch rule IDs when no rules match the room."""
-    sip_management = SIPManagement()
+    telephony_service = TelephonyService()
     room = RoomFactory(access_level=RoomAccessLevel.RESTRICTED, pin_code="1234")
 
     mock_rules = [
@@ -167,7 +163,7 @@ def test_list_dispatch_rules_ids_no_matching_rules(mock_client_factory):
     )
     mock_client_factory.return_value = mock_api
 
-    result = async_to_sync(sip_management._list_dispatch_rules_ids)(room.id)
+    result = async_to_sync(telephony_service._list_dispatch_rules_ids)(room.id)
 
     assert result == []
     mock_api.aclose.assert_called_once()
@@ -176,7 +172,7 @@ def test_list_dispatch_rules_ids_no_matching_rules(mock_client_factory):
 @mock.patch("core.utils.create_livekit_client")
 def test_list_dispatch_rules_ids_api_failure(mock_client_factory):
     """Test listing dispatch rule IDs when API fails."""
-    sip_management = SIPManagement()
+    telephony_service = TelephonyService()
     room = RoomFactory(access_level=RoomAccessLevel.RESTRICTED, pin_code="1234")
 
     mock_api = create_mock_livekit_client()
@@ -185,34 +181,34 @@ def test_list_dispatch_rules_ids_api_failure(mock_client_factory):
     )
     mock_client_factory.return_value = mock_api
 
-    with pytest.raises(SIPException, match="Could not list dispatch rules"):
+    with pytest.raises(TelephonyException, match="Could not list dispatch rules"):
-        async_to_sync(sip_management._list_dispatch_rules_ids)(room.id)
+        async_to_sync(telephony_service._list_dispatch_rules_ids)(room.id)
 
     mock_api.sip.list_sip_dispatch_rule.assert_called_once()
     mock_api.aclose.assert_called_once()
 
 
-@mock.patch("core.services.sip_management.SIPManagement._list_dispatch_rules_ids")
+@mock.patch("core.services.telephony.TelephonyService._list_dispatch_rules_ids")
 @mock.patch("core.utils.create_livekit_client")
 def test_delete_dispatch_rule_no_rules(mock_client_factory, mock_list_rules):
     """Test deleting dispatch rules when no rules exist."""
-    sip_management = SIPManagement()
+    telephony_service = TelephonyService()
     room = RoomFactory(access_level=RoomAccessLevel.RESTRICTED, pin_code="1234")
 
     mock_list_rules.return_value = []
 
-    result = sip_management.delete_dispatch_rule(room.id)
+    result = telephony_service.delete_dispatch_rule(room.id)
 
     assert result is False
     mock_list_rules.assert_called_once_with(room.id)
     mock_client_factory.assert_not_called()
 
 
-@mock.patch("core.services.sip_management.SIPManagement._list_dispatch_rules_ids")
+@mock.patch("core.services.telephony.TelephonyService._list_dispatch_rules_ids")
 @mock.patch("core.utils.create_livekit_client")
 def test_delete_dispatch_rule_single_rule(mock_client_factory, mock_list_rules):
     """Test deleting a single dispatch rule."""
-    sip_management = SIPManagement()
+    telephony_service = TelephonyService()
     room = RoomFactory(access_level=RoomAccessLevel.RESTRICTED, pin_code="1234")
 
     mock_list_rules.return_value = ["rule-1"]
@@ -220,7 +216,7 @@ def test_delete_dispatch_rule_single_rule(mock_client_factory, mock_list_rules):
     mock_api.sip.delete_sip_dispatch_rule = mock.AsyncMock()
     mock_client_factory.return_value = mock_api
 
-    result = sip_management.delete_dispatch_rule(room.id)
+    result = telephony_service.delete_dispatch_rule(room.id)
 
     assert result is True
     mock_api.sip.delete_sip_dispatch_rule.assert_called_once()
@@ -230,11 +226,11 @@ def test_delete_dispatch_rule_single_rule(mock_client_factory, mock_list_rules):
     mock_api.aclose.assert_called_once()
 
 
-@mock.patch("core.services.sip_management.SIPManagement._list_dispatch_rules_ids")
+@mock.patch("core.services.telephony.TelephonyService._list_dispatch_rules_ids")
 @mock.patch("core.utils.create_livekit_client")
 def test_delete_dispatch_rule_multiple_rules(mock_client_factory, mock_list_rules):
     """Test deleting multiple dispatch rules."""
-    sip_management = SIPManagement()
+    telephony_service = TelephonyService()
     room = RoomFactory(access_level=RoomAccessLevel.RESTRICTED, pin_code="1234")
 
     mock_list_rules.return_value = ["rule-1", "rule-2", "rule-3"]
@@ -242,7 +238,7 @@ def test_delete_dispatch_rule_multiple_rules(mock_client_factory, mock_list_rule
     mock_api.sip.delete_sip_dispatch_rule = mock.AsyncMock()
     mock_client_factory.return_value = mock_api
 
-    result = sip_management.delete_dispatch_rule(room.id)
+    result = telephony_service.delete_dispatch_rule(room.id)
 
     assert result is True
     assert mock_api.sip.delete_sip_dispatch_rule.call_count == 3
@@ -257,11 +253,11 @@ def test_delete_dispatch_rule_multiple_rules(mock_client_factory, mock_list_rule
     mock_api.aclose.assert_called_once()
 
 
-@mock.patch("core.services.sip_management.SIPManagement._list_dispatch_rules_ids")
+@mock.patch("core.services.telephony.TelephonyService._list_dispatch_rules_ids")
 @mock.patch("core.utils.create_livekit_client")
 def test_delete_dispatch_rule_partial_failure(mock_client_factory, mock_list_rules):
     """Test deleting multiple dispatch rules when one deletion fails."""
-    sip_management = SIPManagement()
+    telephony_service = TelephonyService()
     room = RoomFactory(access_level=RoomAccessLevel.RESTRICTED, pin_code="1234")
 
     mock_list_rules.return_value = ["rule-1", "rule-2", "rule-3"]
@@ -281,18 +277,18 @@ def test_delete_dispatch_rule_partial_failure(mock_client_factory, mock_list_rul
     )
     mock_client_factory.return_value = mock_api
 
-    with pytest.raises(SIPException, match="Could not delete dispatch rules"):
+    with pytest.raises(TelephonyException, match="Could not delete dispatch rules"):
-        sip_management.delete_dispatch_rule(room.id)
+        telephony_service.delete_dispatch_rule(room.id)
 
     assert mock_api.sip.delete_sip_dispatch_rule.call_count == 2
     mock_api.aclose.assert_called_once()
 
 
-@mock.patch("core.services.sip_management.SIPManagement._list_dispatch_rules_ids")
+@mock.patch("core.services.telephony.TelephonyService._list_dispatch_rules_ids")
 @mock.patch("core.utils.create_livekit_client")
 def test_delete_dispatch_rule_api_failure(mock_client_factory, mock_list_rules):
     """Test deleting dispatch rules when API fails immediately."""
-    sip_management = SIPManagement()
+    telephony_service = TelephonyService()
     room = RoomFactory(access_level=RoomAccessLevel.RESTRICTED, pin_code="1234")
 
     mock_list_rules.return_value = ["rule-1"]
@@ -302,131 +298,8 @@ def test_delete_dispatch_rule_api_failure(mock_client_factory, mock_list_rules):
     )
     mock_client_factory.return_value = mock_api
 
-    with pytest.raises(SIPException, match="Could not delete dispatch rules"):
+    with pytest.raises(TelephonyException, match="Could not delete dispatch rules"):
-        sip_management.delete_dispatch_rule(room.id)
+        telephony_service.delete_dispatch_rule(room.id)
 
     mock_api.sip.delete_sip_dispatch_rule.assert_called_once()
     mock_api.aclose.assert_called_once()
-
-
-@mock.patch("core.utils.create_livekit_client")
-def test_create_dispatch_rule_conflict_raises_dedicated_error(mock_client_factory):
-    """Test that a LiveKit conflict error raises DispatchRuleConflictError."""
-    sip_management = SIPManagement()
-    room = RoomFactory(access_level=RoomAccessLevel.RESTRICTED, pin_code="1234")
-
-    mock_api = create_mock_livekit_client()
-    mock_api.sip.create_sip_dispatch_rule = mock.AsyncMock(
-        side_effect=TwirpError(
-            msg=(
-                "Dispatch rule for the same trunk, inbound number, number, and "
-                "PIN combination already exists in dispatch rule"
-            ),
-            code="already_exists",
-            status=409,
-        )
-    )
-    mock_client_factory.return_value = mock_api
-
-    with pytest.raises(DispatchRuleConflictError):
-        sip_management.create_dispatch_rule(room)
-
-    mock_api.aclose.assert_called_once()
-
-
-@mock.patch("core.utils.create_livekit_client")
-def test_ensure_dispatch_rule_creates_when_missing(mock_client_factory):
-    """Test that ensure_dispatch_rule creates the rule when none exists."""
-    sip_management = SIPManagement()
-    room = RoomFactory(access_level=RoomAccessLevel.RESTRICTED, pin_code="1234")
-
-    mock_api = create_mock_livekit_client()
-    mock_api.sip.list_sip_dispatch_rule = mock.AsyncMock(
-        return_value=ListSIPDispatchRuleResponse(items=[])
-    )
-    mock_api.sip.create_sip_dispatch_rule = mock.AsyncMock()
-    mock_client_factory.return_value = mock_api
-
-    created = sip_management.ensure_dispatch_rule(room)
-
-    assert created is True
-    mock_api.sip.create_sip_dispatch_rule.assert_called_once()
-    create_request = mock_api.sip.create_sip_dispatch_rule.call_args[1]["create"]
-
-    assert isinstance(create_request, CreateSIPDispatchRuleRequest)
-    assert create_request.name == f"SIP_{str(room.id)}"
-    assert create_request.rule.dispatch_rule_direct.room_name == str(room.id)
-    assert create_request.rule.dispatch_rule_direct.pin == str(room.pin_code)
-
-
-@mock.patch("core.utils.create_livekit_client")
-def test_ensure_dispatch_rule_skips_when_existing(mock_client_factory):
-    """Test that ensure_dispatch_rule is idempotent when the rule already exists."""
-    sip_management = SIPManagement()
-    room = RoomFactory(access_level=RoomAccessLevel.RESTRICTED, pin_code="1234")
-
-    existing_rule = SIPDispatchRuleInfo(
-        sip_dispatch_rule_id="rule-1", name=f"SIP_{str(room.id)}"
-    )
-    mock_api = create_mock_livekit_client()
-    mock_api.sip.list_sip_dispatch_rule = mock.AsyncMock(
-        return_value=ListSIPDispatchRuleResponse(items=[existing_rule])
-    )
-    mock_api.sip.create_sip_dispatch_rule = mock.AsyncMock()
-    mock_client_factory.return_value = mock_api
-
-    created = sip_management.ensure_dispatch_rule(room)
-
-    assert created is False
-    mock_api.sip.create_sip_dispatch_rule.assert_not_called()
-
-
-@mock.patch("core.utils.create_livekit_client")
-def test_ensure_dispatch_rule_returns_false_on_conflict(mock_client_factory):
-    """Test that ensure_dispatch_rule tolerates a concurrent rule creation.
-
-    If the rule is created by a concurrent caller (e.g. the LiveKit webhook)
-    between the existence check and the creation, LiveKit rejects the
-    duplicate and ensure_dispatch_rule reports the rule as already existing.
-    """
-    sip_management = SIPManagement()
-    room = RoomFactory(access_level=RoomAccessLevel.RESTRICTED, pin_code="1234")
-
-    mock_api = create_mock_livekit_client()
-    mock_api.sip.list_sip_dispatch_rule = mock.AsyncMock(
-        return_value=ListSIPDispatchRuleResponse(items=[])
-    )
-    mock_api.sip.create_sip_dispatch_rule = mock.AsyncMock(
-        side_effect=TwirpError(
-            msg=(
-                "Dispatch rule for the same trunk, inbound number, number, and "
-                "PIN combination already exists in dispatch rule"
-            ),
-            code="already_exists",
-            status=409,
-        )
-    )
-    mock_client_factory.return_value = mock_api
-
-    created = sip_management.ensure_dispatch_rule(room)
-
-    assert created is False
-
-
-@mock.patch("core.utils.create_livekit_client")
-def test_ensure_dispatch_rule_raises_on_other_failures(mock_client_factory):
-    """Test that ensure_dispatch_rule propagates unexpected LiveKit failures."""
-    sip_management = SIPManagement()
-    room = RoomFactory(access_level=RoomAccessLevel.RESTRICTED, pin_code="1234")
-
-    mock_api = create_mock_livekit_client()
-    mock_api.sip.list_sip_dispatch_rule = mock.AsyncMock(
-        return_value=ListSIPDispatchRuleResponse(items=[])
-    )
-    mock_api.sip.create_sip_dispatch_rule = mock.AsyncMock(
-        side_effect=TwirpError(msg="Internal server error", code="unknown", status=500)
-    )
-    mock_client_factory.return_value = mock_api
-
-    with pytest.raises(SIPException, match="Could not create dispatch rule"):
-        sip_management.ensure_dispatch_rule(room)

src/backend/core/tests/services/test_transit_code.py

@@ -0,0 +1,46 @@
+"""
+Unit tests for the TransitCodeService.
+"""
+
+import pytest
+
+from core.factories import UserFactory
+from core.services.transit_code import TransitCodeService
+
+pytestmark = pytest.mark.django_db
+
+
+def test_create_code_returns_unique_opaque_codes():
+    """Each created code should be a distinct high-entropy string."""
+    user = UserFactory()
+    service = TransitCodeService()
+
+    codes = {service.create_code(user) for _ in range(5)}
+
+    assert len(codes) == 5
+    for code in codes:
+        assert len(code) >= 43
+
+
+def test_consume_code_returns_stored_data_once():
+    """Consuming a code should return its data exactly once."""
+    user = UserFactory()
+    service = TransitCodeService()
+
+    code = service.create_code(user, client_id="my-app")
+
+    assert service.consume_code(code) == {
+        "user_id": str(user.id),
+        "client_id": "my-app",
+    }
+    # Single use: a second consumption fails
+    assert service.consume_code(code) is None
+
+
+def test_consume_code_unknown_or_empty():
+    """Unknown or empty codes should not be consumable."""
+    service = TransitCodeService()
+
+    assert service.consume_code("unknown-code") is None
+    assert service.consume_code("") is None
+    assert service.consume_code(None) is None

src/backend/core/tests/test_api_user_access_token_authentication.py

@@ -0,0 +1,200 @@
+"""
+Tests for user access JWT authentication on the core API.
+
+The token authenticates the user on the whole API, exactly like a session
+cookie would (similar to lib-jitsi-meet's token authentication): the
+existing role-based permissions apply unchanged. Room endpoint coverage
+with a user access token lives in the room test files.
+"""
+
+from datetime import datetime, timedelta, timezone
+
+from django.conf import settings as django_settings
+
+import jwt
+import pytest
+from rest_framework.test import APIClient
+
+from core.factories import RoomFactory, UserFactory
+from core.models import RoleChoices
+
+pytestmark = pytest.mark.django_db
+
+
+def generate_user_access_token(user, **overrides):
+    """Generate a valid user access JWT signed with the token secret."""
+    now = datetime.now(timezone.utc)
+
+    payload = {
+        "iss": django_settings.USER_ACCESS_TOKEN_ISSUER,
+        "aud": django_settings.USER_ACCESS_TOKEN_AUDIENCE,
+        "iat": now,
+        "exp": now + timedelta(seconds=django_settings.USER_ACCESS_TOKEN_TTL),
+        "user_id": str(user.id),
+        "token_type": "user_access",
+        "client_id": "test-app",
+        "scope": "user:access",
+    }
+    payload.update(overrides)
+    payload = {key: value for key, value in payload.items() if value is not None}
+
+    return jwt.encode(
+        payload,
+        django_settings.USER_ACCESS_TOKEN_SECRET_KEY,
+        algorithm=django_settings.USER_ACCESS_TOKEN_ALG,
+    )
+
+
+def test_user_access_token_users_me():
+    """A user access token should authenticate the user on /users/me/."""
+    user = UserFactory()
+
+    client = APIClient()
+    client.credentials(HTTP_AUTHORIZATION=f"Bearer {generate_user_access_token(user)}")
+
+    response = client.get("/api/v1.0/users/me/")
+
+    assert response.status_code == 200
+    assert response.data["email"] == user.email
+
+
+def test_user_access_token_expired():
+    """An expired user access token should be rejected."""
+    user = UserFactory()
+
+    now = datetime.now(timezone.utc)
+    token = generate_user_access_token(
+        user,
+        iat=now - timedelta(hours=3),
+        exp=now - timedelta(hours=1),
+    )
+    client = APIClient()
+    client.credentials(HTTP_AUTHORIZATION=f"Bearer {token}")
+
+    response = client.get("/api/v1.0/users/me/")
+
+    assert response.status_code == 401
+    assert "token expired" in str(response.data).lower()
+
+
+def test_user_access_token_invalid_signature():
+    """A token signed with the wrong key should defer and end unauthenticated."""
+    user = UserFactory()
+
+    now = datetime.now(timezone.utc)
+    token = jwt.encode(
+        {
+            "iss": django_settings.USER_ACCESS_TOKEN_ISSUER,
+            "aud": django_settings.USER_ACCESS_TOKEN_AUDIENCE,
+            "iat": now,
+            "exp": now + timedelta(seconds=600),
+            "user_id": str(user.id),
+            "token_type": "user_access",
+            "client_id": "test-app",
+        },
+        "wrong-secret-key-padded-for-minimum-len!",
+        algorithm=django_settings.USER_ACCESS_TOKEN_ALG,
+    )
+    client = APIClient()
+    client.credentials(HTTP_AUTHORIZATION=f"Bearer {token}")
+
+    # UserAccessJWTAuthentication defers, session auth finds no session
+    response = client.get("/api/v1.0/users/me/")
+
+    assert response.status_code == 401
+
+
+def test_user_access_token_wrong_token_type():
+    """A verified token with the wrong 'token_type' claim should be rejected."""
+    user = UserFactory()
+
+    token = generate_user_access_token(user, token_type="addons")
+    client = APIClient()
+    client.credentials(HTTP_AUTHORIZATION=f"Bearer {token}")
+
+    response = client.get("/api/v1.0/users/me/")
+
+    assert response.status_code == 401
+    assert "invalid token type" in str(response.data).lower()
+
+
+def test_user_access_token_missing_client_id_claim():
+    """A token without the issuance-audit claim should be rejected."""
+    user = UserFactory()
+
+    token = generate_user_access_token(user, client_id=None)
+    client = APIClient()
+    client.credentials(HTTP_AUTHORIZATION=f"Bearer {token}")
+
+    response = client.get("/api/v1.0/users/me/")
+
+    assert response.status_code == 401
+    assert "invalid token claims" in str(response.data).lower()
+
+
+def test_user_access_token_inactive_user():
+    """A user access token for an inactive user should be rejected."""
+    user = UserFactory(is_active=False)
+
+    client = APIClient()
+    client.credentials(HTTP_AUTHORIZATION=f"Bearer {generate_user_access_token(user)}")
+
+    response = client.get("/api/v1.0/users/me/")
+
+    assert response.status_code == 401
+
+
+def test_user_access_token_feature_disabled(settings):
+    """When the feature is disabled, user access tokens should be ignored."""
+    settings.USER_ACCESS_TOKEN_ENABLED = False
+
+    user = UserFactory()
+
+    client = APIClient()
+    client.credentials(HTTP_AUTHORIZATION=f"Bearer {generate_user_access_token(user)}")
+
+    response = client.get("/api/v1.0/users/me/")
+
+    assert response.status_code == 401
+
+
+def test_user_access_token_does_not_break_session_authentication():
+    """A session-authenticated user should keep full access to the API."""
+    user = UserFactory()
+    RoomFactory(users=[(user, RoleChoices.OWNER)])
+
+    client = APIClient()
+    client.force_login(user)
+    response = client.get("/api/v1.0/rooms/")
+
+    assert response.status_code == 200
+    assert response.data["count"] == 1
+
+
+def test_user_access_token_application_jwt_not_accepted_on_core_api():
+    """An application-delegation JWT must not authenticate on the core API."""
+    user = UserFactory()
+
+    now = datetime.now(timezone.utc)
+    token = jwt.encode(
+        {
+            "iss": django_settings.APPLICATION_JWT_ISSUER,
+            "aud": django_settings.APPLICATION_JWT_AUDIENCE,
+            "iat": now,
+            "exp": now + timedelta(seconds=600),
+            "user_id": str(user.id),
+            "client_id": "some-client",
+            "delegated": True,
+            "scope": "rooms:retrieve",
+        },
+        django_settings.APPLICATION_JWT_SECRET_KEY,
+        algorithm=django_settings.APPLICATION_JWT_ALG,
+    )
+    client = APIClient()
+    client.credentials(HTTP_AUTHORIZATION=f"Bearer {token}")
+
+    # The user token backend must defer (wrong signature) and the request
+    # must end up unauthenticated.
+    response = client.get("/api/v1.0/users/me/")
+
+    assert response.status_code == 401

src/backend/core/tests/test_api_users_exchange_access_token.py

@@ -0,0 +1,165 @@
+"""
+Test users API endpoints in the Meet core app: exchange transit code.
+"""
+
+# pylint: disable=W0621
+
+import secrets
+
+import jwt
+import pytest
+from rest_framework.test import APIClient
+
+from core.factories import UserFactory
+from core.services.transit_code import TransitCodeService
+
+pytestmark = pytest.mark.django_db
+
+
+def decode_user_access_token(token, settings):
+    """Decode a user access token with the token secret."""
+    return jwt.decode(
+        token,
+        settings.USER_ACCESS_TOKEN_SECRET_KEY,
+        algorithms=[settings.USER_ACCESS_TOKEN_ALG],
+        issuer=settings.USER_ACCESS_TOKEN_ISSUER,
+        audience=settings.USER_ACCESS_TOKEN_AUDIENCE,
+    )
+
+
+def generate_unknown_code(settings):
+    """Generate a well-formed code that was never stored."""
+    return secrets.token_urlsafe(settings.TRANSIT_CODE_NBYTES)
+
+
+@pytest.fixture
+def client():
+    """Return an anonymous API client with a random source IP.
+
+    A fresh IP per test isolates the anonymous throttle history, both
+    between the tests of this module and between test runs.
+    """
+    # `secrets` rather than `random`: the global random module is seeded
+    # deterministically by the factories, its sequence repeats across runs.
+    remote_addr = (
+        f"10.{secrets.randbelow(256)}.{secrets.randbelow(256)}"
+        f".{secrets.randbelow(254) + 1}"
+    )
+    return APIClient(REMOTE_ADDR=remote_addr)
+
+
+def test_exchange_access_token_missing_code(client):
+    """The exchange endpoint should validate its input."""
+    response = client.post("/api/v1.0/users/exchange-access-token/")
+
+    assert response.status_code == 400
+    assert "code" in response.data
+
+
+def test_exchange_access_token_malformed_code(client):
+    """A code whose length cannot match a generated one should be a 400."""
+    response = client.post(
+        "/api/v1.0/users/exchange-access-token/",
+        {"code": "not-a-valid-code"},
+    )
+
+    assert response.status_code == 400
+    assert "invalid transit code format" in str(response.data).lower()
+
+
+def test_exchange_access_token_unknown_code(client, settings):
+    """A well-formed but unknown code should be denied."""
+    response = client.post(
+        "/api/v1.0/users/exchange-access-token/",
+        {"code": generate_unknown_code(settings)},
+    )
+
+    assert response.status_code == 403
+    assert "invalid, expired or already used" in str(response.data).lower()
+
+
+def test_exchange_access_token_success(client, settings):
+    """A valid transit code should be exchangeable for an access token."""
+    user = UserFactory()
+
+    code = TransitCodeService().create_code(user, client_id="my-app")
+
+    response = client.post("/api/v1.0/users/exchange-access-token/", {"code": code})
+
+    assert response.status_code == 200
+    assert response.data["token_type"] == settings.USER_ACCESS_TOKEN_TYPE
+    assert response.data["expires_in"] == settings.USER_ACCESS_TOKEN_TTL
+    assert response.data["scope"] == "user:access"
+
+    payload = decode_user_access_token(response.data["access_token"], settings)
+    assert payload["token_type"] == "user_access"
+    assert payload["user_id"] == str(user.id)
+    assert payload["client_id"] == "my-app"
+    assert payload["exp"] - payload["iat"] == settings.USER_ACCESS_TOKEN_TTL
+
+
+def test_exchange_access_token_single_use(client):
+    """A transit code should be exchangeable exactly once."""
+    user = UserFactory()
+
+    code = TransitCodeService().create_code(user)
+
+    response = client.post("/api/v1.0/users/exchange-access-token/", {"code": code})
+    assert response.status_code == 200
+
+    # Replaying the same code must be denied
+    response = client.post("/api/v1.0/users/exchange-access-token/", {"code": code})
+    assert response.status_code == 403
+    assert "invalid, expired or already used" in str(response.data).lower()
+
+
+def test_exchange_access_token_inactive_user(client):
+    """A code minted for a now-inactive user should be denied."""
+    user = UserFactory()
+
+    code = TransitCodeService().create_code(user)
+
+    user.is_active = False
+    user.save()
+
+    response = client.post("/api/v1.0/users/exchange-access-token/", {"code": code})
+
+    assert response.status_code == 403
+    assert "no longer access" in str(response.data).lower()
+
+
+def test_exchange_access_token_feature_disabled(client, settings):
+    """The exchange endpoint should return 404 when the feature is disabled."""
+    settings.USER_ACCESS_TOKEN_ENABLED = False
+
+    user = UserFactory()
+    code = TransitCodeService().create_code(user)
+
+    response = client.post("/api/v1.0/users/exchange-access-token/", {"code": code})
+
+    assert response.status_code == 404
+
+
+def test_exchange_access_token_throttled(client, settings):
+    """Anonymous exchange attempts should be rate limited."""
+    throttle_rates = settings.REST_FRAMEWORK["DEFAULT_THROTTLE_RATES"]
+    initial_rate = throttle_rates["exchange_access_token"]
+    # The rates dict is mutated in place: restore it explicitly, the
+    # `settings` fixture only rolls back attribute assignments.
+    throttle_rates["exchange_access_token"] = "2/minute"
+
+    try:
+        for _ in range(2):
+            response = client.post(
+                "/api/v1.0/users/exchange-access-token/",
+                {"code": generate_unknown_code(settings)},
+            )
+            assert response.status_code == 403
+
+        response = client.post(
+            "/api/v1.0/users/exchange-access-token/",
+            {"code": generate_unknown_code(settings)},
+        )
+        assert response.status_code == 429
+    finally:
+        throttle_rates["exchange_access_token"] = initial_rate

src/backend/core/tests/test_external_api_users.py

@@ -0,0 +1,166 @@
+"""
+Tests for external API /users endpoints (transit codes)
+"""
+
+# pylint: disable=W0621
+
+from datetime import datetime, timedelta, timezone
+from unittest import mock
+
+from django.conf import settings as django_settings
+
+import jwt
+import pytest
+from lasuite.oidc_resource_server.authentication import ResourceServerAuthentication
+from rest_framework.test import APIClient
+
+from core.factories import ApplicationFactory, UserFactory
+from core.models import ApplicationScope
+from core.services.transit_code import TransitCodeService
+
+pytestmark = pytest.mark.django_db
+
+
+def generate_test_token(user, scopes):
+    """Generate a valid application JWT token for testing."""
+    now = datetime.now(timezone.utc)
+    scope_string = " ".join(scopes)
+
+    application = ApplicationFactory()
+
+    payload = {
+        "iss": django_settings.APPLICATION_JWT_ISSUER,
+        "aud": django_settings.APPLICATION_JWT_AUDIENCE,
+        "iat": now,
+        "exp": now
+        + timedelta(seconds=django_settings.APPLICATION_JWT_EXPIRATION_SECONDS),
+        "client_id": str(application.client_id),
+        "scope": scope_string,
+        "user_id": str(user.id),
+        "delegated": True,
+    }
+
+    return jwt.encode(
+        payload,
+        django_settings.APPLICATION_JWT_SECRET_KEY,
+        algorithm=django_settings.APPLICATION_JWT_ALG,
+    )
+
+
+def test_api_users_transit_code_requires_authentication():
+    """Minting a transit code without authentication should return 401."""
+    client = APIClient()
+    response = client.post("/external-api/v1.0/users/transit-code/")
+
+    assert response.status_code == 401
+
+
+def test_api_users_transit_code_missing_scope():
+    """A token without the 'users:session' scope should be rejected."""
+    user = UserFactory()
+
+    token = generate_test_token(user, [ApplicationScope.ROOMS_RETRIEVE])
+
+    client = APIClient()
+    client.credentials(HTTP_AUTHORIZATION=f"Bearer {token}")
+    response = client.post("/external-api/v1.0/users/transit-code/")
+
+    assert response.status_code == 403
+    assert "users:session" in str(response.data)
+
+
+def test_api_users_transit_code_success(settings):
+    """A delegated user with the scope should be able to mint a transit code."""
+    user = UserFactory()
+
+    token = generate_test_token(user, [ApplicationScope.USERS_SESSION])
+
+    client = APIClient()
+    client.credentials(HTTP_AUTHORIZATION=f"Bearer {token}")
+    response = client.post("/external-api/v1.0/users/transit-code/")
+
+    assert response.status_code == 200
+    assert response.data["expires_in"] == settings.TRANSIT_CODE_TTL
+
+    code = response.data["transit_code"]
+    # Opaque, high-entropy random string
+    assert len(code) == (4 * settings.TRANSIT_CODE_NBYTES + 2) // 3
+
+    # The code is stored server-side and references the delegated user
+    code_data = TransitCodeService().consume_code(code)
+    assert code_data == {
+        "user_id": str(user.id),
+        "client_id": mock.ANY,
+    }
+
+
+def test_api_users_transit_code_with_rs_token():
+    """A resource-server-authenticated user should be able to mint a code."""
+    user = UserFactory()
+
+    # todo - add a decorator instead
+    with mock.patch.object(
+        ResourceServerAuthentication,
+        "authenticate",
+        return_value=(user, {"scope": "users:session", "client_id": "rs-client"}),
+    ) as mock_rs_authenticate:
+        client = APIClient()
+        client.credentials(HTTP_AUTHORIZATION="Bearer some-opaque-rs-token")
+        response = client.post("/external-api/v1.0/users/transit-code/")
+
+    mock_rs_authenticate.assert_called_once()
+    assert response.status_code == 200
+
+    code_data = TransitCodeService().consume_code(response.data["transit_code"])
+    assert code_data == {
+        "user_id": str(user.id),
+        "client_id": "rs-client",
+    }
+
+
+def test_api_users_transit_code_with_rs_token_missing_scope():
+    """A resource server token without the scope should be rejected."""
+    user = UserFactory()
+
+    # todo - add a decorator instead
+    with mock.patch.object(
+        ResourceServerAuthentication,
+        "authenticate",
+        return_value=(user, {"scope": "rooms:list", "client_id": "rs-client"}),
+    ):
+        client = APIClient()
+        client.credentials(HTTP_AUTHORIZATION="Bearer some-opaque-rs-token")
+        response = client.post("/external-api/v1.0/users/transit-code/")
+
+    assert response.status_code == 403
+    assert "users:session" in str(response.data)
+
+
+def test_api_users_transit_code_feature_disabled(settings):
+    """Minting a transit code should return 404 when the feature is disabled."""
+    settings.USER_ACCESS_TOKEN_ENABLED = False
+
+    user = UserFactory()
+    token = generate_test_token(user, [ApplicationScope.USERS_SESSION])
+
+    client = APIClient()
+    client.credentials(HTTP_AUTHORIZATION=f"Bearer {token}")
+    response = client.post("/external-api/v1.0/users/transit-code/")
+
+    assert response.status_code == 404
+
+
+def test_api_users_transit_code_inactive_user():
+    """An inactive user should not be able to mint a transit code."""
+    user = UserFactory(is_active=False)
+
+    token = generate_test_token(user, [ApplicationScope.USERS_SESSION])
+
+    client = APIClient()
+    client.credentials(HTTP_AUTHORIZATION=f"Bearer {token}")
+    response = client.post("/external-api/v1.0/users/transit-code/")
+
+    assert response.status_code == 401
+
+
+# todo - add a test to make sure the addon authentification doesn't allow to mint a transit token

src/backend/core/tests/test_models_rooms.py

@@ -184,13 +184,12 @@ def test_models_rooms_is_public_property():
 
 
 @mock.patch.object(Room, "generate_unique_pin_code")
-def test_telephony_and_roomkit_disabled_skips_pin_generation(
+def test_telephony_disabled_skips_pin_generation(
     mock_generate_unique_pin_code, settings
 ):
-    """Telephony and roomkit both disabled should not generate pin codes."""
+    """Telephony disabled should not generate pin codes."""
 
     settings.ROOM_TELEPHONY_ENABLED = False
-    settings.ROOMKIT_ENABLED = False
 
     room = RoomFactory()
 
@@ -198,18 +197,6 @@ def test_telephony_and_roomkit_disabled_skips_pin_generation(
     assert room.pin_code is None
 
 
-def test_roomkit_enabled_generates_pin_code(settings):
-    """Roomkit enabled alone should generate pin codes, even without telephony."""
-
-    settings.ROOM_TELEPHONY_ENABLED = False
-    settings.ROOMKIT_ENABLED = True
-
-    room = RoomFactory()
-
-    assert room.pin_code is not None
-    assert len(room.pin_code) == settings.ROOM_TELEPHONY_PIN_LENGTH
-
-
 def test_default_and_custom_pin_length(settings):
     """Pin codes should be created with correct configured length."""
 

src/backend/core/urls.py

@@ -9,7 +9,6 @@ from rest_framework.routers import DefaultRouter, SimpleRouter
 from core.addons import viewsets as addons_viewsets
 from core.api import get_frontend_configuration, viewsets
 from core.external_api import viewsets as external_viewsets
-from core.roomkit import viewsets as roomkit_viewsets
 
 # - Main endpoints
 router = DefaultRouter()
@@ -20,11 +19,6 @@ router.register("files", viewsets.FileViewSet, basename="files")
 router.register(
     "resource-accesses", viewsets.ResourceAccessViewSet, basename="resource_accesses"
 )
-router.register(
-    "roomkit",
-    roomkit_viewsets.RoomKitViewSet,
-    basename="roomkit",
-)
 router.register(
     "addons/sessions",
     addons_viewsets.SessionViewSet,
@@ -43,6 +37,11 @@ external_router.register(
     external_viewsets.RoomViewSet,
     basename="external_room",
 )
+external_router.register(
+    "users",
+    external_viewsets.UserViewSet,
+    basename="external_user",
+)
 
 urlpatterns = [
     path(

src/backend/meet/settings.py

@@ -324,6 +324,7 @@ class Base(Configuration):
 
     REST_FRAMEWORK = {
         "DEFAULT_AUTHENTICATION_CLASSES": (
+            "core.authentication.user_token.UserAccessJWTAuthentication",
             "core.authentication.backends.SessionAuthenticationWith401",
         ),
         "DEFAULT_PARSER_CLASSES": [
@@ -344,16 +345,16 @@ class Base(Configuration):
                 environ_name="REQUEST_ENTRY_THROTTLE_RATES",
                 environ_prefix=None,
             ),
+            "exchange_access_token": values.Value(
+                default="30/minute",
+                environ_name="EXCHANGE_ACCESS_TOKEN_THROTTLE_RATES",
+                environ_prefix=None,
+            ),
             "creation_callback": values.Value(
                 default="600/minute",
                 environ_name="CREATION_CALLBACK_THROTTLE_RATES",
                 environ_prefix=None,
             ),
-            "roomkit_join": values.Value(
-                default="300/minute",
-                environ_name="ROOMKIT_JOIN_THROTTLE_RATES",
-                environ_prefix=None,
-            ),
         },
     }
     MONITORED_THROTTLE_FAILURE_CALLBACK = (
@@ -886,21 +887,6 @@ class Base(Configuration):
         environ_prefix=None,
     )
 
-    # Roomkit (meeting-room SIP devices) integration
-    ROOMKIT_ENABLED = values.BooleanValue(
-        False,
-        environ_name="ROOMKIT_ENABLED",
-        environ_prefix=None,
-    )
-    # Server-to-server API token allowing the LiveKit SIP module to call the
-    # roomkit endpoints (e.g. join a room on behalf of a meeting-room device
-    # dialing in before any WebRTC participant).
-    ROOMKIT_SERVER_TO_SERVER_API_TOKEN = SecretFileValue(
-        None,
-        environ_name="ROOMKIT_SERVER_TO_SERVER_API_TOKEN",
-        environ_prefix=None,
-    )
-
     # Subtitles settings
     ROOM_SUBTITLE_ENABLED = values.BooleanValue(
         False, environ_name="ROOM_SUBTITLE_ENABLED", environ_prefix=None
@@ -973,6 +959,61 @@ class Base(Configuration):
         environ_name="APPLICATION_BASE_URL",
         environ_prefix=None,
     )
+
+    # User access tokens (embedded frontend / iframe support)
+    USER_ACCESS_TOKEN_ENABLED = values.BooleanValue(
+        False, environ_name="USER_ACCESS_TOKEN_ENABLED", environ_prefix=None
+    )
+    USER_ACCESS_TOKEN_SECRET_KEY = SecretFileValue(
+        None, environ_name="USER_ACCESS_TOKEN_SECRET_KEY", environ_prefix=None
+    )
+    USER_ACCESS_TOKEN_ALG = values.Value(
+        "HS256",
+        environ_name="USER_ACCESS_TOKEN_ALG",
+        environ_prefix=None,
+    )
+    USER_ACCESS_TOKEN_ISSUER = values.Value(
+        "lasuite-meet",
+        environ_name="USER_ACCESS_TOKEN_ISSUER",
+        environ_prefix=None,
+    )
+    USER_ACCESS_TOKEN_AUDIENCE = values.Value(
+        None,
+        environ_name="USER_ACCESS_TOKEN_AUDIENCE",
+        environ_prefix=None,
+    )
+    # Lifetime of the user access token obtained through the exchange
+    # endpoint. It never transits through a URL, so it can cover a full
+    # meeting (default: 2 hours).
+    USER_ACCESS_TOKEN_TTL = values.PositiveIntegerValue(
+        7200,
+        environ_name="USER_ACCESS_TOKEN_TTL",
+        environ_prefix=None,
+    )
+    # Lifetime of the single-use transit code handed to the frontend
+    # through a URL fragment. Kept very short by design: it must only
+    # survive the redirect and the exchange call.
+    TRANSIT_CODE_TTL = values.PositiveIntegerValue(
+        60,
+        environ_name="TRANSIT_CODE_TTL",
+        environ_prefix=None,
+    )
+    TRANSIT_CODE_CACHE_PREFIX = values.Value(
+        "transit-code",
+        environ_name="TRANSIT_CODE_CACHE_PREFIX",
+        environ_prefix=None,
+    )
+    # Number of random bytes per code (48 bytes -> 64 url-safe characters)
+    TRANSIT_CODE_NBYTES = values.PositiveIntegerValue(
+        48,
+        environ_name="TRANSIT_CODE_NBYTES",
+        environ_prefix=None,
+    )
+    USER_ACCESS_TOKEN_TYPE = values.Value(
+        "Bearer",
+        environ_name="USER_ACCESS_TOKEN_TYPE",
+        environ_prefix=None,
+    )
     # Warning: EXTERNAL_API_ALLOW_PUBLIC_ACCESS is ignored when
     # EXTERNAL_API_DEFAULT_ACCESS_LEVEL=public.
     EXTERNAL_API_ALLOW_PUBLIC_ACCESS = values.BooleanValue(
@@ -1270,6 +1311,10 @@ class Test(Base):
     ADDONS_CSRF_SECRET = "secret-key-padded-for-minimum-len!-addons"  # noqa:S105
     ADDONS_TOKEN_SECRET_KEY = "secret-key-padded-for-minimum-len!-addons"  # noqa:S105
 
+    USER_ACCESS_TOKEN_ENABLED = True
+    USER_ACCESS_TOKEN_SECRET_KEY = "secret-key-padded-for-minimum-len!-room"  # noqa:S105
+    USER_ACCESS_TOKEN_AUDIENCE = "Test inc."  # noqa:S105
+
     def __init__(self):
         # pylint: disable=invalid-name
         self.INSTALLED_APPS += ["drf_spectacular_sidecar"]