diff --git a/Unreal/PS_AI_Agent/Plugins/PS_AI_ConvAgent/Source/PS_AI_ConvAgent/Private/PS_AI_ConvAgent_ElevenLabsComponent.cpp b/Unreal/PS_AI_Agent/Plugins/PS_AI_ConvAgent/Source/PS_AI_ConvAgent/Private/PS_AI_ConvAgent_ElevenLabsComponent.cpp
index 6e9293f..d89d228 100644
--- a/Unreal/PS_AI_Agent/Plugins/PS_AI_ConvAgent/Source/PS_AI_ConvAgent/Private/PS_AI_ConvAgent_ElevenLabsComponent.cpp
+++ b/Unreal/PS_AI_Agent/Plugins/PS_AI_ConvAgent/Source/PS_AI_ConvAgent/Private/PS_AI_ConvAgent_ElevenLabsComponent.cpp
@@ -2525,6 +2525,32 @@ void UPS_AI_ConvAgent_ElevenLabsComponent::ServerSendMicAudioFromPlayer(
 {
 	if (!WebSocketProxy || !WebSocketProxy->IsConnected()) return;
 
+	// Server-side voice-onset. This runs on the SERVER (only the server has a live
+	// WebSocket — clients returned above), and the player's mic — the host's OR a
+	// remote client's, relayed here — always passes through this function. Broadcasting
+	// OnUserVoiceDetected here is what makes the agent-to-agent dialogue interrupt work
+	// on a DEDICATED server (no host player). Debounced (shares LastUserVoiceOnset with
+	// the FeedExternalAudio path, so the host doesn't double-fire).
+	{
+		const int32 OnsetSamples = PCMBytes.Num() / (int32)sizeof(int16);
+		if (OnsetSamples > 0)
+		{
+			const int16* OS = reinterpret_cast<const int16*>(PCMBytes.GetData());
+			double OnsetSumSq = 0.0;
+			for (int32 i = 0; i < OnsetSamples; ++i) { const double v = OS[i] / 32768.0; OnsetSumSq += v * v; }
+			const double OnsetRms = FMath::Sqrt(OnsetSumSq / OnsetSamples);
+			if (OnsetRms >= 0.02)
+			{
+				const double NowSec = FPlatformTime::Seconds();
+				if (NowSec - LastUserVoiceOnset > 0.5)
+				{
+					LastUserVoiceOnset = NowSec;
+					OnUserVoiceDetected.Broadcast();
+				}
+			}
+		}
+	}
+
 	// Standalone / single-player: bypass speaker arbitration entirely.
 	// There's only one player — no need for Contains check or speaker switching.
 	if (NetConnectedPawns.Num() <= 1)