Formatting adjusted and the encoding selection moved from TelnyFrameSerilaizer to websocket_endpoint function in server.py

examples/telnyx-chatbot/README.md

@@ -76,7 +76,7 @@ This project is a FastAPI-based chatbot that integrates with Telnyx to handle We
      ```
    - In `templates/streams.xml`, replace `<your server url>` with your ngrok URL (without `https://`)
    - The final URL should look like: `wss://abc123.ngrok.io/ws`
-   - The encoding (`bidirectionalCodec`) should be `PCMU` or `PCMA` depending on your needs. Based on selected encoding, set the outbound_encoding in the `TelnyxFrameSerializer` in `src/pipecat/serializers/telnyx.py`
+   - The encoding (`bidirectionalCodec`) should be `PCMU` or `PCMA` depending on your needs. Based on selected encoding, set the outbound_encoding in `server.py` when the bot is initialized.
    - The inbound encoding can be controlled from the application configuration for inbound calls and dial/transfer commands for outbound calls.
 
 ## Running the Application

examples/telnyx-chatbot/bot.py

@@ -34,7 +34,7 @@ logger.remove(0)
 logger.add(sys.stderr, level="DEBUG")
 
 
-async def run_bot(websocket_client, stream_id, encoding):
+async def run_bot(websocket_client, stream_id, outbound_encoding, inbound_encoding):
     transport = FastAPIWebsocketTransport(
         websocket=websocket_client,
         params=FastAPIWebsocketParams(
@@ -43,7 +43,7 @@ async def run_bot(websocket_client, stream_id, encoding):
             vad_enabled=True,
             vad_analyzer=SileroVADAnalyzer(),
             vad_audio_passthrough=True,
-            serializer=TelnyxFrameSerializer(stream_id, encoding),
+            serializer=TelnyxFrameSerializer(stream_id, outbound_encoding, inbound_encoding),
         ),
     )
 
@@ -55,9 +55,7 @@ async def run_bot(websocket_client, stream_id, encoding):
         api_key=os.getenv("ELEVENLABS_API_KEY"),
         voice_id="CwhRBWXzGAHq8TQ4Fs17",
         output_format="pcm_24000",
-        params=ElevenLabsTTSService.InputParams(
-            language=Language.EN
-        )
+        params=ElevenLabsTTSService.InputParams(language=Language.EN),
     )
 
     messages = [

examples/telnyx-chatbot/server.py

@@ -16,13 +16,11 @@ app.add_middleware(
     allow_headers=["*"],
 )
 
-
 @app.post("/")
 async def start_call():
     print("POST TeXML")
     return HTMLResponse(content=open("templates/streams.xml").read(), media_type="application/xml")
 
-
 @app.websocket("/ws")
 async def websocket_endpoint(websocket: WebSocket):
     await websocket.accept()
@@ -31,10 +29,9 @@ async def websocket_endpoint(websocket: WebSocket):
     call_data = json.loads(await start_data.__anext__())
     print(call_data, flush=True)
     stream_id = call_data["stream_id"]
-    encoding = call_data["start"]["media_format"]["encoding"]
+    outbound_encoding = call_data["start"]["media_format"]["encoding"]
     print("WebSocket connection accepted")
-    await run_bot(websocket, stream_id, encoding)
-
+    await run_bot(websocket, stream_id, outbound_encoding, "PCMU")
 
 if __name__ == "__main__":
     uvicorn.run(app, host="0.0.0.0", port=8765)