diff --git a/src/com/android/phone/ImsRcsController.java b/src/com/android/phone/ImsRcsController.java
index d4a0f1e..3f35454 100644
--- a/src/com/android/phone/ImsRcsController.java
+++ b/src/com/android/phone/ImsRcsController.java
@@ -50,6 +50,7 @@
 import com.android.ims.ImsManager;
 import com.android.ims.internal.IImsServiceFeatureCallback;
 import com.android.internal.telephony.IIntegerConsumer;
+import com.android.internal.telephony.ISipDialogStateCallback;
 import com.android.internal.telephony.Phone;
 import com.android.internal.telephony.TelephonyPermissions;
 import com.android.internal.telephony.ims.ImsResolver;
@@ -667,6 +668,60 @@
     }
 
     /**
+     * Register a state of Sip Dialog callback
+     */
+    @Override
+    public void registerSipDialogStateCallback(int subId, ISipDialogStateCallback cb) {
+        enforceReadPrivilegedPermission("registerSipDialogStateCallback");
+        if (cb == null) {
+            throw new IllegalArgumentException("SipDialogStateCallback is null");
+        }
+        final long identity = Binder.clearCallingIdentity();
+        if (!SubscriptionManager.isValidSubscriptionId(subId)) {
+            throw new IllegalArgumentException("Invalid Subscription ID: " + subId);
+        }
+        try {
+            SipTransportController transport = getRcsFeatureController(subId).getFeature(
+                    SipTransportController.class);
+            if (transport == null) {
+                throw new ServiceSpecificException(ImsException.CODE_ERROR_SERVICE_UNAVAILABLE,
+                        "This transport does not support the registerSipDialogStateCallback"
+                                + " of SIP delegates");
+            }
+            transport.addCallbackForSipDialogState(subId, cb);
+        } finally {
+            Binder.restoreCallingIdentity(identity);
+        }
+    }
+
+    /**
+     * Unregister a state of Sip Dialog callback
+     */
+    @Override
+    public  void unregisterSipDialogStateCallback(int subId, ISipDialogStateCallback cb) {
+        enforceReadPrivilegedPermission("unregisterSipDialogStateCallback");
+        if (cb == null) {
+            throw new IllegalArgumentException("SipDialogStateCallback is null");
+        }
+        final long identity = Binder.clearCallingIdentity();
+        if (!SubscriptionManager.isValidSubscriptionId(subId)) {
+            throw new IllegalArgumentException("Invalid Subscription ID: " + subId);
+        }
+        try {
+            SipTransportController transport = getRcsFeatureController(subId).getFeature(
+                    SipTransportController.class);
+            if (transport == null) {
+                throw new ServiceSpecificException(ImsException.CODE_ERROR_SERVICE_UNAVAILABLE,
+                        "This transport does not support the unregisterSipDialogStateCallback"
+                                + " of SIP delegates");
+            }
+            transport.removeCallbackForSipDialogState(subId, cb);
+        } finally {
+            Binder.restoreCallingIdentity(identity);
+        }
+    }
+
+    /**
      * Registers for updates to the RcsFeature connection through the IImsServiceFeatureCallback
      * callback.
      */
diff --git a/src/com/android/services/telephony/rcs/MessageTransportWrapper.java b/src/com/android/services/telephony/rcs/MessageTransportWrapper.java
index 45f7d95..d992883 100644
--- a/src/com/android/services/telephony/rcs/MessageTransportWrapper.java
+++ b/src/com/android/services/telephony/rcs/MessageTransportWrapper.java
@@ -481,6 +481,16 @@
         }
     }
 
+    /**
+     * This is a listener to handle SipDialog state of delegate
+     * @param listener {@link SipDialogsStateListener}
+     * @param isNeedNotify It indicates whether the current dialogs state should be notified.
+     */
+    public void setSipDialogsListener(SipDialogsStateListener listener,
+            boolean isNeedNotify) {
+        mSipSessionTracker.setSipDialogsListener(listener, isNeedNotify);
+    }
+
     private void logi(String log) {
         Log.i(SipTransportController.LOG_TAG, TAG + "[" + mSubId + "] " + log);
         mLocalLog.log("[I] " + log);
diff --git a/src/com/android/services/telephony/rcs/SipDelegateController.java b/src/com/android/services/telephony/rcs/SipDelegateController.java
index 860a6d9..f7fc359 100644
--- a/src/com/android/services/telephony/rcs/SipDelegateController.java
+++ b/src/com/android/services/telephony/rcs/SipDelegateController.java
@@ -391,6 +391,16 @@
     }
 
     /**
+     * This is a listener to handle SipDialog state of delegate
+     * @param listener {@link SipDialogsStateListener}
+     * @param isNeedNotify It indicates whether the current dialogs state should be notified.
+     */
+    public void setSipDialogsListener(SipDialogsStateListener listener,
+            boolean isNeedNotify) {
+        mMessageTransportWrapper.setSipDialogsListener(listener, isNeedNotify);
+    }
+
+    /**
      * Write the current state of this controller in String format using the PrintWriter provided
      * for dumpsys.
      */
diff --git a/src/com/android/services/telephony/rcs/SipDialogsStateListener.java b/src/com/android/services/telephony/rcs/SipDialogsStateListener.java
new file mode 100644
index 0000000..bbd3bd1
--- /dev/null
+++ b/src/com/android/services/telephony/rcs/SipDialogsStateListener.java
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2022 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.services.telephony.rcs;
+
+import android.telephony.ims.SipDialogState;
+
+import java.util.List;
+
+/**
+ * The listener interface for notifying the state of sip dialogs to SipDialogsStateHandle.
+ * refer to {@link SipTransportController}
+ */
+public interface SipDialogsStateListener {
+    /**
+     * To map dialog state information of available delegates
+     * @param key This is an ID of SipSessionTracker for distinguishing whose delegate is
+     *               during dialog mapping.
+     * @param dialogStates This is dialog state information of delegate
+     */
+    void reMappingSipDelegateState(String key, List<SipDialogState> dialogStates);
+
+    /**
+     * Notify SipDialogState information with
+     * {@link com.android.internal.telephony.ISipDialogStateCallback}
+     */
+    void notifySipDialogState();
+}
diff --git a/src/com/android/services/telephony/rcs/SipSessionTracker.java b/src/com/android/services/telephony/rcs/SipSessionTracker.java
index 68e3065..2d48a9f 100644
--- a/src/com/android/services/telephony/rcs/SipSessionTracker.java
+++ b/src/com/android/services/telephony/rcs/SipSessionTracker.java
@@ -16,6 +16,7 @@
 
 package com.android.services.telephony.rcs;
 
+import android.telephony.ims.SipDialogState;
 import android.telephony.ims.SipMessage;
 import android.util.ArrayMap;
 import android.util.ArraySet;
@@ -33,6 +34,7 @@
 import java.util.Collections;
 import java.util.List;
 import java.util.Set;
+import java.util.UUID;
 import java.util.stream.Collectors;
 
 /**
@@ -69,10 +71,13 @@
 
     private final RcsStats mRcsStats;
     int mSubId;
+    private SipDialogsStateListener mSipDialogsListener;
+    private String mDelegateKey;
 
     public SipSessionTracker(int subId, RcsStats rcsStats) {
         mSubId = subId;
         mRcsStats = rcsStats;
+        mDelegateKey = String.valueOf(UUID.randomUUID());
     }
 
     /**
@@ -152,6 +157,7 @@
             logi("Dialog closed: " + d);
         }
         mTrackedDialogs.removeAll(dialogsToCleanup);
+        notifySipDialogState();
     }
 
     /**
@@ -213,6 +219,7 @@
         }
         mTrackedDialogs.clear();
         mPendingAck.clear();
+        notifySipDialogState();
     }
 
     /**
@@ -308,6 +315,7 @@
                 d.close();
                 logi("Dialog closed: " + d);
             }
+            notifySipDialogState();
         };
     }
 
@@ -365,16 +373,47 @@
         if (statusCode >= 300) {
             mRcsStats.onSipTransportSessionClosed(mSubId, m.getCallIdParameter(), statusCode, true);
             d.close();
+            notifySipDialogState();
             return;
         }
         if (toTag == null) logw("updateSipDialogState: No to tag for message: " + m);
         if (statusCode >= 200) {
             mRcsStats.confirmedSipTransportSession(m.getCallIdParameter(), statusCode);
             d.confirm(toTag);
+            notifySipDialogState();
             return;
         }
         // 1XX responses still require updates to dialogs.
         d.earlyResponse(toTag);
+        notifySipDialogState();
+    }
+
+    /**
+     * This is a listener to handle SipDialog state of delegate
+     * @param listener {@link SipDialogsStateListener}
+     * @param isNeedNotify It indicates whether the current dialogs state should be notified.
+     */
+    public void setSipDialogsListener(SipDialogsStateListener listener,
+            boolean isNeedNotify) {
+        mSipDialogsListener = listener;
+        if (listener == null) {
+            return;
+        }
+        if (isNeedNotify) {
+            notifySipDialogState();
+        }
+    }
+
+    private void notifySipDialogState() {
+        if (mSipDialogsListener == null) {
+            return;
+        }
+        List<SipDialogState> dialogStates = new ArrayList<>();
+        for (SipDialog d : mTrackedDialogs) {
+            SipDialogState dialog = new SipDialogState.Builder(d.getState()).build();
+            dialogStates.add(dialog);
+        }
+        mSipDialogsListener.reMappingSipDelegateState(mDelegateKey, dialogStates);
     }
 
     private void logi(String log) {
diff --git a/src/com/android/services/telephony/rcs/SipTransportController.java b/src/com/android/services/telephony/rcs/SipTransportController.java
index 1fc1349..2f090d5 100644
--- a/src/com/android/services/telephony/rcs/SipTransportController.java
+++ b/src/com/android/services/telephony/rcs/SipTransportController.java
@@ -29,6 +29,7 @@
 import android.telephony.ims.ImsException;
 import android.telephony.ims.ImsService;
 import android.telephony.ims.SipDelegateManager;
+import android.telephony.ims.SipDialogState;
 import android.telephony.ims.aidl.IImsRegistration;
 import android.telephony.ims.aidl.ISipDelegate;
 import android.telephony.ims.aidl.ISipDelegateConnectionStateCallback;
@@ -46,6 +47,8 @@
 
 import com.android.ims.RcsFeatureManager;
 import com.android.internal.annotations.VisibleForTesting;
+import com.android.internal.telephony.ISipDialogStateCallback;
+import com.android.internal.telephony.util.RemoteCallbackListExt;
 import com.android.internal.util.IndentingPrintWriter;
 import com.android.phone.RcsProvisioningMonitor;
 
@@ -54,9 +57,11 @@
 import java.io.PrintWriter;
 import java.util.ArrayList;
 import java.util.Collections;
+import java.util.HashMap;
 import java.util.Iterator;
 import java.util.List;
 import java.util.Locale;
+import java.util.Map;
 import java.util.Set;
 import java.util.concurrent.Callable;
 import java.util.concurrent.CompletableFuture;
@@ -239,6 +244,65 @@
     }
 
     /**
+     * This is to handle with dialogs of all available delegates that have dialogs.
+     */
+    private final class SipDialogsStateHandle implements SipDialogsStateListener {
+
+        private Executor mExecutor = Runnable::run;
+        Map<String, List<SipDialogState>> mMapDialogState = new HashMap<>();
+
+        /**
+         * This will be called using the {@link SipDialogsStateListener}
+         * @param key This is the ID of the SipSessionTracker for handling the dialogs of
+         *               each created delegates.
+         * @param dialogStates This is a list of dialog states tracked in SipSessionTracker.
+         */
+        @Override
+        public void reMappingSipDelegateState(String key,
+                List<SipDialogState> dialogStates) {
+            mExecutor.execute(()->processReMappingSipDelegateState(key, dialogStates));
+        }
+
+        /**
+         * Notify SipDialogState information with
+         * {@link com.android.internal.telephony.ISipDialogStateCallback}
+         */
+        @Override
+        public void notifySipDialogState() {
+            mExecutor.execute(()->processNotifySipDialogState());
+        }
+
+        private void processReMappingSipDelegateState(String key,
+                List<SipDialogState> dialogStates) {
+            if (dialogStates.isEmpty()) {
+                mMapDialogState.remove(key);
+            } else {
+                mMapDialogState.put(key, dialogStates);
+            }
+            notifySipDialogState();
+        }
+
+        private void processNotifySipDialogState() {
+            List<SipDialogState> finalDialogStates = new ArrayList<>();
+            for (List<SipDialogState> d : mMapDialogState.values()) {
+                finalDialogStates.addAll(d);
+            }
+
+            if (mSipDialogStateCallbacks.getRegisteredCallbackCount() == 0) {
+                return;
+            }
+            mSipDialogStateCallbacks.broadcastAction((c) -> {
+                try {
+                    c.onActiveSipDialogsChanged(finalDialogStates);
+                } catch (RemoteException e) {
+                    Log.e(LOG_TAG,
+                            "onActiveSipDialogsChanged() - Skipping callback." + e);
+                }
+            });
+        }
+    }
+
+    /**
      * Allow the ability for tests to easily mock out the SipDelegateController for testing.
      */
     @VisibleForTesting
@@ -266,6 +330,12 @@
     private final List<SipDelegateController> mDelegatePendingCreate = new ArrayList<>();
     // SipDelegateControllers that are pending to be destroyed.
     private final List<DestroyRequest> mDelegatePendingDestroy = new ArrayList<>();
+    // SipDialogStateCallback that are adding to use callback.
+    private final RemoteCallbackListExt<ISipDialogStateCallback> mSipDialogStateCallbacks =
+            new RemoteCallbackListExt<>();
+    // To listen the state information if the dialog status is changed from the SipSessionTracker.
+    private final SipDialogsStateListener mSipDialogsListener = new SipDialogsStateHandle();
+
     // Cache of Binders to remote IMS applications for tracking their potential death
     private final TrackedAppBinders mActiveAppBinders = new TrackedAppBinders();
 
@@ -458,6 +528,10 @@
         logi("createSipDelegateInternal: request= " + request + ", packageName= " + packageName
                 + ", controller created: " + c);
         addPendingCreateAndEvaluate(c);
+        // If SipDialogStateCallback is registered, listener will be set.
+        if (mSipDialogStateCallbacks.getRegisteredCallbackCount() > 0) {
+            c.setSipDialogsListener(mSipDialogsListener, false);
+        }
     }
 
     private void destroySipDelegateInternal(int subId, ISipDelegate connection, int reason) {
@@ -1057,6 +1131,56 @@
         }
     }
 
+    /**
+     * Adds a callback that gets called when SipDialog status has changed.
+     * @param subId The subId associated with the request.
+     * @param cb A {@link android.telephony.ims.SipDialogStateCallback} that will notify the caller
+     *          when Dialog status has changed.
+     */
+    public void addCallbackForSipDialogState(int subId, ISipDialogStateCallback cb) {
+        if (subId != mSubId) {
+            logw("addCallbackForSipDialogState the subId is not supported");
+            return;
+        }
+        // callback register and no delegate : register this callback / notify (empty state)
+        // callback register and delegates : register this callback / release listener / notify
+        mSipDialogStateCallbacks.register(cb);
+        if (!mDelegatePriorityQueue.isEmpty()) {
+            for (SipDelegateController dc : mDelegatePriorityQueue) {
+                dc.setSipDialogsListener(mSipDialogsListener, true);
+            }
+        } else {
+            mSipDialogsListener.notifySipDialogState();
+        }
+    }
+
+    /**
+     * Unregister previously registered callback
+     * @param subId The subId associated with the request.
+     * @param cb A {@link android.telephony.ims.SipDialogStateCallback} that will be unregistering.
+     */
+    public void removeCallbackForSipDialogState(int subId, ISipDialogStateCallback cb) {
+        if (subId != mSubId) {
+            logw("addCallbackForSipDialogState the subId is not supported");
+            return;
+        }
+        if (cb == null) {
+            throw new IllegalArgumentException("callback is null");
+        }
+
+        // remove callback register and no delegate : only unregister this callback
+        // remove callback register and delegates :
+        // unregister this callback and setListener(null)
+        mSipDialogStateCallbacks.unregister(cb);
+        if (mSipDialogStateCallbacks.getRegisteredCallbackCount() == 0) {
+            if (!mDelegatePriorityQueue.isEmpty()) {
+                for (SipDelegateController dc : mDelegatePriorityQueue) {
+                    dc.setSipDialogsListener(null, false);
+                }
+            }
+        }
+    }
+
     @Override
     public void dump(PrintWriter printWriter) {
         IndentingPrintWriter pw = new IndentingPrintWriter(printWriter, "  ");
diff --git a/src/com/android/services/telephony/rcs/TransportSipMessageValidator.java b/src/com/android/services/telephony/rcs/TransportSipMessageValidator.java
index 3b1b26d..b15992e 100644
--- a/src/com/android/services/telephony/rcs/TransportSipMessageValidator.java
+++ b/src/com/android/services/telephony/rcs/TransportSipMessageValidator.java
@@ -577,6 +577,16 @@
         }
     }
 
+    /**
+     * This is a listener to handle SipDialog state of delegate
+     * @param listener {@link SipDialogsStateListener}
+     * @param isNeedNotify It indicates whether the current dialogs state should be notified.
+     */
+    public void setSipDialogsListener(SipDialogsStateListener listener,
+            boolean isNeedNotify) {
+        mSipSessionTracker.setSipDialogsListener(listener, isNeedNotify);
+    }
+
     private void logi(String log) {
         Log.i(SipTransportController.LOG_TAG, LOG_TAG + "[" + mSubId + "] " + log);
         mLocalLog.log("[I] " + log);