diff --git a/getstream/video/rtc/connection_manager.py b/getstream/video/rtc/connection_manager.py
index b8d992f1..6c6f2879 100644
--- a/getstream/video/rtc/connection_manager.py
+++ b/getstream/video/rtc/connection_manager.py
@@ -2,6 +2,7 @@
 import asyncio
 import logging
 import uuid
+import functools
 from typing import Optional, Dict, Any
 
 import aioice
@@ -281,6 +282,9 @@ async def _connect_coordinator_ws(self):
                     user_details={"id": self.user_id},
                 )
                 self._coordinator_ws_client.on_wildcard("*", _log_event)
+                self._coordinator_ws_client.on(
+                    "custom", functools.partial(self.emit, "custom")
+                )
                 await self._coordinator_ws_client.connect()
 
             with telemetry.start_as_current_span(
diff --git a/tests/rtc/coordinator/test_custom_events.py b/tests/rtc/coordinator/test_custom_events.py
new file mode 100644
index 00000000..6795fe2e
--- /dev/null
+++ b/tests/rtc/coordinator/test_custom_events.py
@@ -0,0 +1,72 @@
+"""
+Integration tests for custom event pub/sub via coordinator WebSocket.
+
+Tests the full round-trip: send a custom event via REST, receive it on the
+ConnectionManager via its re-emitted "custom" event.
+
+Requires Stream API credentials (STREAM_API_KEY, STREAM_API_SECRET).
+"""
+
+import asyncio
+import logging
+import uuid
+
+import pytest
+import pytest_asyncio
+
+from getstream import AsyncStream
+from getstream.models import CallRequest, UserRequest
+from getstream.video import rtc
+from getstream.video.rtc.connection_utils import ConnectionState
+from tests.conftest import skip_on_rate_limit
+
+logger = logging.getLogger(__name__)
+
+
+@pytest_asyncio.fixture()
+async def test_users(async_client: AsyncStream):
+    user_ids = [f"test-user-{uuid.uuid4()}" for _ in range(2)]
+    await async_client.upsert_users(*[UserRequest(id=uid) for uid in user_ids])
+    yield user_ids
+    try:
+        await async_client.delete_users(
+            user_ids=user_ids, user="hard", conversations="hard", messages="hard"
+        )
+    except Exception:
+        logger.warning("Failed to clean up test users %s", user_ids, exc_info=True)
+
+
+@pytest.mark.asyncio
+@pytest.mark.integration
+@skip_on_rate_limit
+async def test_custom_event_round_trip(async_client: AsyncStream, test_users: list):
+    """Send a custom event via REST and verify it arrives on ConnectionManager."""
+    sender, receiver = test_users
+
+    call = async_client.video.call("default", str(uuid.uuid4()))
+    await call.get_or_create(data=CallRequest(created_by_id=sender))
+
+    async with await rtc.join(call, receiver) as connection:
+        assert connection.connection_state == ConnectionState.JOINED
+
+        received_event = None
+        event_received = asyncio.Event()
+
+        @connection.on("custom")
+        def on_custom(event):
+            nonlocal received_event
+            received_event = event
+            event_received.set()
+
+        await call.send_call_event(
+            user_id=sender,
+            custom={"type": "test_event", "payload": "hello from sender"},
+        )
+
+        await asyncio.wait_for(event_received.wait(), timeout=10.0)
+
+        assert received_event is not None
+        custom_data = received_event.get("custom", {})
+        assert custom_data.get("type") == "test_event"
+        assert custom_data.get("payload") == "hello from sender"
+        assert received_event.get("user", {}).get("id") == sender