diff --git a/app/src/main/java/org/linphone/ui/call/viewmodel/CurrentCallViewModel.kt b/app/src/main/java/org/linphone/ui/call/viewmodel/CurrentCallViewModel.kt
index 8162c4a7e..372fb2c44 100644
--- a/app/src/main/java/org/linphone/ui/call/viewmodel/CurrentCallViewModel.kt
+++ b/app/src/main/java/org/linphone/ui/call/viewmodel/CurrentCallViewModel.kt
@@ -84,6 +84,8 @@ class CurrentCallViewModel @UiThread constructor() : ViewModel() {
 
     val isOutgoing = MutableLiveData<Boolean>()
 
+    val isOutgoingRinging = MutableLiveData<Boolean>()
+
     val isRecordingEnabled = MutableLiveData<Boolean>()
 
     val isRecording = MutableLiveData<Boolean>()
@@ -341,6 +343,8 @@ class CurrentCallViewModel @UiThread constructor() : ViewModel() {
             state: Call.State,
             message: String
         ) {
+            isOutgoingRinging.postValue(call.state == Call.State.OutgoingRinging)
+
             if (::currentCall.isInitialized) {
                 if (call != currentCall) {
                     if (call == currentCall.core.currentCall) {
@@ -996,6 +1000,7 @@ class CurrentCallViewModel @UiThread constructor() : ViewModel() {
         updateOutputAudioDevice(audioDevice)
 
         isOutgoing.postValue(call.dir == Call.Dir.Outgoing)
+        isOutgoingRinging.postValue(call.state == Call.State.OutgoingRinging)
 
         isPaused.postValue(isCallPaused())
         isPausedByRemote.postValue(call.state == Call.State.PausedByRemote)
diff --git a/app/src/main/res/layout/call_ended_actions.xml b/app/src/main/res/layout/call_ended_actions.xml
index d5adc8e24..b310ab998 100644
--- a/app/src/main/res/layout/call_ended_actions.xml
+++ b/app/src/main/res/layout/call_ended_actions.xml
@@ -40,7 +40,7 @@
             android:src="@drawable/video_camera_slash"
             android:background="@drawable/shape_round_in_call_disabled_button_background"
             android:visibility="@{viewModel.hideVideo ? View.GONE : View.VISIBLE}"
-            app:tint="?attr/color_grey_500"
+            app:tint="@color/gray_400"
             app:layout_constraintHorizontal_bias="1"
             app:layout_constraintHorizontal_chainStyle="packed"
             app:layout_constraintBottom_toBottomOf="parent"
@@ -55,7 +55,7 @@
             android:padding="@dimen/call_button_icon_padding"
             android:src="@drawable/microphone_slash"
             android:background="@drawable/shape_round_in_call_disabled_button_background"
-            app:tint="?attr/color_grey_500"
+            app:tint="@color/gray_400"
             app:layout_constraintBottom_toBottomOf="parent"
             app:layout_constraintStart_toEndOf="@id/toggle_video"
             app:layout_constraintEnd_toStartOf="@id/change_audio_output" />
@@ -68,7 +68,7 @@
             android:padding="@dimen/call_button_icon_padding"
             android:src="@drawable/speaker_slash"
             android:background="@drawable/shape_round_in_call_disabled_button_background"
-            app:tint="?attr/color_grey_500"
+            app:tint="@color/gray_400"
             app:layout_constraintBottom_toBottomOf="parent"
             app:layout_constraintStart_toEndOf="@id/toggle_mute_mic"
             app:layout_constraintEnd_toEndOf="parent" />
diff --git a/app/src/main/res/layout/call_outgoing_actions.xml b/app/src/main/res/layout/call_outgoing_actions.xml
index 40eecb13a..5655d0dc0 100644
--- a/app/src/main/res/layout/call_outgoing_actions.xml
+++ b/app/src/main/res/layout/call_outgoing_actions.xml
@@ -40,7 +40,7 @@
             android:visibility="@{viewModel.hideVideo ? View.GONE : View.VISIBLE}"
             android:src="@{viewModel.isVideoEnabled ? @drawable/video_camera : @drawable/video_camera_slash, default=@drawable/video_camera}"
             android:background="@drawable/shape_round_in_call_disabled_button_background"
-            app:tint="@color/gray_500"
+            app:tint="@color/gray_400"
             app:layout_constraintHorizontal_bias="1"
             app:layout_constraintHorizontal_chainStyle="packed"
             app:layout_constraintBottom_toBottomOf="parent"
@@ -68,6 +68,7 @@
             android:layout_height="@dimen/call_button_size"
             android:layout_marginEnd="16dp"
             android:padding="@dimen/call_button_icon_padding"
+            android:enabled="@{viewModel.isOutgoingRinging}"
             android:src="@{viewModel.isHeadsetEnabled ? @drawable/headset : viewModel.isBluetoothEnabled ? @drawable/bluetooth : viewModel.isSpeakerEnabled ? @drawable/speaker_high : @drawable/speaker_slash, default=@drawable/speaker_slash}"
             android:background="@drawable/in_call_button_background_red"
             app:tint="@color/in_call_button_tint_color"