diff --git a/Android.bp b/Android.bp
index f46c206..7e57a3f 100644
--- a/Android.bp
+++ b/Android.bp
@@ -10,19 +10,12 @@
     out: ["com/android/server/telecom/TelecomStatsLog.java"],
 }
 
-filegroup {
-    name: "Telecom-srcs",
+android_library {
+    name: "TelecomLib",
+    manifest: "AndroidManifestLib.xml",
     srcs: [
         "src/**/*.java",
         ":statslog-telecom-java-gen",
-    ],
-}
-
-// Build the Telecom service.
-android_app {
-    name: "Telecom",
-    srcs: [
-        ":Telecom-srcs",
         "proto/**/*.proto",
     ],
     static_libs: [
@@ -30,9 +23,6 @@
         "androidx.core_core",
         "telecom_flags_core_java_lib",
     ],
-    libs: [
-        "services",
-    ],
     resource_dirs: ["res"],
     proto: {
         type: "nano",
@@ -40,6 +30,22 @@
         output_params: ["optional_field_style=accessors"],
     },
     platform_apis: true,
+}
+
+
+// Build the Telecom service.
+android_app {
+    name: "Telecom",
+    srcs: [
+    ],
+    static_libs: [
+        "TelecomLib",
+    ],
+    libs: [
+        "services",
+    ],
+    resource_dirs: [],
+    platform_apis: true,
     certificate: "platform",
     privileged: true,
     optimize: {
@@ -50,6 +56,7 @@
 android_test {
     name: "TelecomUnitTests",
     static_libs: [
+        "TelecomLib",
         "android-ex-camera2",
         "flag-junit",
         "guava",
@@ -58,25 +65,15 @@
         "platform-test-annotations",
         "androidx.legacy_legacy-support-core-ui",
         "androidx.legacy_legacy-support-core-utils",
-        "androidx.core_core",
         "androidx.fragment_fragment",
         "androidx.test.ext.junit",
         "platform-compat-test-rules",
-        "telecom_flags_core_java_lib",
     ],
     srcs: [
         "tests/src/**/*.java",
-        ":Telecom-srcs",
-        "proto/**/*.proto",
     ],
-    proto: {
-        type: "nano",
-        local_include_dirs: ["proto/"],
-        output_params: ["optional_field_style=accessors"],
-    },
     resource_dirs: [
         "tests/res",
-        "res",
     ],
     libs: [
         "android.test.mock",
@@ -89,11 +86,6 @@
         "libstaticjvmtiagent",
     ],
 
-    aaptflags: [
-        "--auto-add-overlay",
-        "--extra-packages",
-        "com.android.server.telecom",
-    ],
     manifest: "tests/AndroidManifest.xml",
     optimize: {
         enabled: false,
diff --git a/AndroidManifestLib.xml b/AndroidManifestLib.xml
new file mode 100644
index 0000000..9b40f6b
--- /dev/null
+++ b/AndroidManifestLib.xml
@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2024 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+
+<manifest package="com.android.server.telecom">
+</manifest>
diff --git a/flags/telecom_api_flags.aconfig b/flags/telecom_api_flags.aconfig
index 74cb447..36f20d8 100644
--- a/flags/telecom_api_flags.aconfig
+++ b/flags/telecom_api_flags.aconfig
@@ -27,3 +27,11 @@
   description: "The key is used for dialer apps to mark missed calls as read when it gets the notification on reboot."
   bug: "292597423"
 }
+
+
+flag{
+  name: "set_mute_state"
+  namespace: "telecom"
+  description: "transactional calls need the ability to mute the call audio input"
+  bug: "310669304"
+}
diff --git a/src/com/android/server/telecom/CallsManager.java b/src/com/android/server/telecom/CallsManager.java
index 22d8a02..afba3aa 100755
--- a/src/com/android/server/telecom/CallsManager.java
+++ b/src/com/android/server/telecom/CallsManager.java
@@ -3500,7 +3500,7 @@
     }
 
     /** Called by the in-call UI to change the mute state. */
-    void mute(boolean shouldMute) {
+    public void mute(boolean shouldMute) {
         if (isInEmergencyCall() && shouldMute) {
             Log.i(this, "Refusing to turn on mute because we're in an emergency call");
             shouldMute = false;
diff --git a/src/com/android/server/telecom/TransactionalServiceWrapper.java b/src/com/android/server/telecom/TransactionalServiceWrapper.java
index 02ccef7..938ee58 100644
--- a/src/com/android/server/telecom/TransactionalServiceWrapper.java
+++ b/src/com/android/server/telecom/TransactionalServiceWrapper.java
@@ -46,6 +46,7 @@
 import com.android.server.telecom.voip.ParallelTransaction;
 import com.android.server.telecom.voip.RequestNewActiveCallTransaction;
 import com.android.server.telecom.voip.SerialTransaction;
+import com.android.server.telecom.voip.SetMuteStateTransaction;
 import com.android.server.telecom.voip.TransactionManager;
 import com.android.server.telecom.voip.VoipCallTransaction;
 import com.android.server.telecom.voip.VoipCallTransactionResult;
@@ -225,6 +226,18 @@
         }
 
         @Override
+        public void setMuteState(boolean isMuted, android.os.ResultReceiver callback)
+                throws RemoteException {
+            try {
+                Log.startSession("TSW.sMS");
+                addTransactionsToManager(
+                        new SetMuteStateTransaction(mCallsManager, isMuted), callback);
+            } finally {
+                Log.endSession();
+            }
+        }
+
+        @Override
         public void startCallStreaming(String callId, android.os.ResultReceiver callback)
                 throws RemoteException {
             try {
diff --git a/src/com/android/server/telecom/voip/SetMuteStateTransaction.java b/src/com/android/server/telecom/voip/SetMuteStateTransaction.java
new file mode 100644
index 0000000..d9f7329
--- /dev/null
+++ b/src/com/android/server/telecom/voip/SetMuteStateTransaction.java
@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.telecom.voip;
+
+import android.util.Log;
+
+import com.android.server.telecom.CallsManager;
+
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.CompletionStage;
+
+/**
+ * This transaction should be used to change the global mute state for transactional
+ * calls. There is currently no way for this transaction to fail.
+ */
+public class SetMuteStateTransaction extends VoipCallTransaction {
+
+    private static final String TAG = SetMuteStateTransaction.class.getSimpleName();
+    private final CallsManager mCallsManager;
+    private final boolean mIsMuted;
+
+    public SetMuteStateTransaction(CallsManager callsManager, boolean isMuted) {
+        super(callsManager.getLock());
+        mCallsManager = callsManager;
+        mIsMuted = isMuted;
+    }
+
+    @Override
+    public CompletionStage<VoipCallTransactionResult> processTransaction(Void v) {
+        Log.d(TAG, "processTransaction");
+        CompletableFuture<VoipCallTransactionResult> future = new CompletableFuture<>();
+
+        mCallsManager.mute(mIsMuted);
+
+        future.complete(new VoipCallTransactionResult(
+                VoipCallTransactionResult.RESULT_SUCCEED,
+                "The Mute State was changed successfully"));
+
+        return future;
+    }
+}