diff --git a/src/Infrastructure/BotSharp.Core.Realtime/Services/RealtimeHub.cs b/src/Infrastructure/BotSharp.Core.Realtime/Services/RealtimeHub.cs
index 0e6027da..7dc34f27 100644
--- a/src/Infrastructure/BotSharp.Core.Realtime/Services/RealtimeHub.cs
+++ b/src/Infrastructure/BotSharp.Core.Realtime/Services/RealtimeHub.cs
@@ -98,24 +98,33 @@ public class RealtimeHub : IRealtimeHub
 
         routing.Context.SetDialogs(dialogs);
 
+        var states = _services.GetRequiredService<IConversationStateService>();
+
         await _completer.Connect(_conn, 
             onModelReady: async () => 
             {
-                // Control initial session, prevent initial response interruption
-                await _completer.UpdateSession(_conn, turnDetection: false);
-
-                if (dialogs.LastOrDefault()?.Role == AgentRole.Assistant)
+                if (states.ContainsState("init_audio_file"))
                 {
-                    await _completer.TriggerModelInference($"Rephase your last response:\r\n{dialogs.LastOrDefault()?.Content}");
+                    await _completer.UpdateSession(_conn, turnDetection: true);
                 }
                 else
                 {
-                    await _completer.TriggerModelInference("Reply based on the conversation context.");
-                }
+                    // Control initial session, prevent initial response interruption
+                    await _completer.UpdateSession(_conn, turnDetection: false);
 
-                // Start turn detection
-                await Task.Delay(1000 * 8);
-                await _completer.UpdateSession(_conn, turnDetection: true);
+                    if (dialogs.LastOrDefault()?.Role == AgentRole.Assistant)
+                    {
+                        await _completer.TriggerModelInference($"Rephase your last response:\r\n{dialogs.LastOrDefault()?.Content}");
+                    }
+                    else
+                    {
+                        await _completer.TriggerModelInference("Reply based on the conversation context.");
+                    }
+
+                    // Start turn detection
+                    await Task.Delay(1000 * 8);
+                    await _completer.UpdateSession(_conn, turnDetection: true);
+                }
             },
             onModelAudioDeltaReceived: async (audioDeltaData, itemId) =>
             {
diff --git a/src/Plugins/BotSharp.Plugin.Twilio/Controllers/TwilioStreamController.cs b/src/Plugins/BotSharp.Plugin.Twilio/Controllers/TwilioStreamController.cs
index dcb33959..7fb7e0e0 100644
--- a/src/Plugins/BotSharp.Plugin.Twilio/Controllers/TwilioStreamController.cs
+++ b/src/Plugins/BotSharp.Plugin.Twilio/Controllers/TwilioStreamController.cs
@@ -44,7 +44,8 @@ public class TwilioStreamController : TwilioController
 
         if (_context.HttpContext.Request.Query.ContainsKey("init_audio_file"))
         {
-            instruction.SpeechPaths.Add(_context.HttpContext.Request.Query["init_audio_file"]);
+            request.InitAudioFile = _context.HttpContext.Request.Query["init_audio_file"];
+            instruction.SpeechPaths.Add(request.InitAudioFile);
         }
 
         if (_context.HttpContext.Request.Query.ContainsKey("conversation_id"))
@@ -104,6 +105,11 @@ public class TwilioStreamController : TwilioController
                 new(StateConst.ROUTING_MODE, "lazy"),
             };
 
+        if (request.InitAudioFile != null)
+        {
+            states.Add(new("init_audio_file", request.InitAudioFile));
+        }
+
         convService.SetConversationId(conversation.Id, states);
         convService.SaveStates();
 
diff --git a/src/Plugins/BotSharp.Plugin.Twilio/Models/ConversationalVoiceRequest.cs b/src/Plugins/BotSharp.Plugin.Twilio/Models/ConversationalVoiceRequest.cs
index 33ee7633..a17b344f 100644
--- a/src/Plugins/BotSharp.Plugin.Twilio/Models/ConversationalVoiceRequest.cs
+++ b/src/Plugins/BotSharp.Plugin.Twilio/Models/ConversationalVoiceRequest.cs
@@ -18,6 +18,7 @@ public class ConversationalVoiceRequest : VoiceRequest
     public string? AIResponseErrorMessage { get; set; } = string.Empty;
 
     public string Intent { get; set; } = string.Empty;
+    public string? InitAudioFile { get; set; }
 
     public List<string> States { get; set; } = [];
 }