fix: call and stream id for vobiz pipeline

api/services/pipecat/transport_setup.py

@@ -21,6 +21,7 @@ from pipecat.audio.turn.smart_turn.local_smart_turn_v3 import LocalSmartTurnAnal
 from pipecat.audio.vad.silero import SileroVADAnalyzer, VADParams
 from pipecat.serializers.plivo import PlivoFrameSerializer
 from pipecat.serializers.twilio import TwilioFrameSerializer
+from pipecat.serializers.vobiz import VobizFrameSerializer
 from pipecat.serializers.vonage import VonageFrameSerializer
 from pipecat.transports.base_transport import TransportParams
 from pipecat.transports.smallwebrtc.connection import SmallWebRTCConnection
@@ -256,20 +257,20 @@ async def create_vobiz_transport(
 
     turn_analyzer = create_turn_analyzer(workflow_run_id, audio_config)
 
-    # Use PlivoFrameSerializer for Vobiz (Plivo-compatible protocol)
-    serializer = PlivoFrameSerializer(
+    # Use VobizFrameSerializer for Vobiz WebSocket protocol
+    serializer = VobizFrameSerializer(
         stream_id=stream_id,
         call_id=call_id,
         auth_id=auth_id,
         auth_token=auth_token,
-        params=PlivoFrameSerializer.InputParams(
-            plivo_sample_rate=8000,  # Vobiz uses MULAW at 8kHz
+        params=VobizFrameSerializer.InputParams(
+            vobiz_sample_rate=8000,  # Vobiz uses MULAW at 8kHz
             sample_rate=audio_config.pipeline_sample_rate,
         ),
     )
 
     logger.debug(
-        f"[run {workflow_run_id}] PlivoFrameSerializer created for Vobiz - "
+        f"[run {workflow_run_id}] VobizFrameSerializer created for Vobiz - "
         f"transport_rate=8000Hz, pipeline_rate={audio_config.pipeline_sample_rate}Hz"
     )
 

api/services/telephony/providers/vobiz_provider.py

@@ -2,6 +2,7 @@
 Vobiz implementation of the TelephonyProvider interface.
 """
 
+import json
 import random
 from typing import TYPE_CHECKING, Any, Dict, List, Optional
 
@@ -292,16 +293,35 @@ class VobizProvider(TelephonyProvider):
         workflow_run_id: int,
     ) -> None:
         """
-        Handle Vobiz WebSocket connection using Plivo-compatible protocol.
+        Handle Vobiz WebSocket connection using Vobiz WebSocket protocol.
 
-        Uses workflow_run_id as stream/call identifiers and delegates
-        message handling to PlivoFrameSerializer.
+        Extracts stream_id and call_id from the start event and delegates
+        message handling to VobizFrameSerializer.
         """
         from api.services.pipecat.run_pipeline import run_pipeline_vobiz
+        
+        first_msg = await websocket.receive_text()
+        start_msg = json.loads(first_msg)
+        logger.debug(f"Received the first message: {start_msg}")
+        
+        # Validate that this is a start event
+        if start_msg.get("event") != "start":
+            logger.error(f"Expected 'start' event, got: {start_msg.get('event')}")
+            await websocket.close(code=4400, reason="Expected start event")
+            return
+
+        logger.debug(f"Vobiz WebSocket connected for workflow_run {workflow_run_id}")
 
         try:
-            stream_id = f"vobiz-stream-{workflow_run_id}"
-            call_id = f"vobiz-call-{workflow_run_id}"
+            # Extract stream_id and call_id from the start event
+            start_data = start_msg.get("start", {})
+            stream_id = start_data.get("streamId")
+            call_id = start_data.get("callId")
+            
+            if not stream_id or not call_id:
+                logger.error(f"Missing streamId or callId in start event: {start_data}")
+                await websocket.close(code=4400, reason="Missing streamId or callId")
+                return
 
             logger.info(
                 f"[run {workflow_run_id}] Starting Vobiz WebSocket handler - "