diff --git a/src/pipecat/runner/utils.py b/src/pipecat/runner/utils.py
index 18fba79f5..f9fd0c14a 100644
--- a/src/pipecat/runner/utils.py
+++ b/src/pipecat/runner/utils.py
@@ -216,6 +216,7 @@ async def parse_telephony_websocket(websocket: WebSocket):
                 "account_sid": start_data.get("account_sid"),
                 "from": start_data.get("from", ""),
                 "to": start_data.get("to", ""),
+                "custom_parameters": start_data.get("custom_parameters", ""),
             }
 
         else: