diff --git a/core/chanora_core/src/lib.rs b/core/chanora_core/src/lib.rs
index df859d1..a98e45e 100644
--- a/core/chanora_core/src/lib.rs
+++ b/core/chanora_core/src/lib.rs
@@ -998,7 +998,13 @@ impl ChanoraSession {
     ) -> Result<(), CoreError> {
         let guard = self.inner.lock().await;
         let state = guard.as_ref().ok_or(CoreError::NotConnected)?;
-        state.protocol.set_muted(input, output).await?;
+        // Server-side output mute/deafen makes TeamSpeak/tsclientlib
+        // consider the client unable to send audio. That is correct
+        // for a server-visible "deafened" state, but our P0 speaker
+        // button is a local playback mute. Keep output mute local-only
+        // so Android can still transmit while the user silences remote
+        // playback on this device.
+        state.protocol.set_muted(input, None).await?;
         if let Some(muted) = output {
             if let Some(audio) = state.audio.as_ref() {
                 audio.set_output_muted(muted);