diff --git a/api/current.txt b/api/current.txt
index b485715892fcd..449c761b7fe01 100644
--- a/api/current.txt
+++ b/api/current.txt
@@ -40507,6 +40507,7 @@ package android.telecom {
   public final class Call {
     method public void answer(int);
     method public void conference(android.telecom.Call);
+    method public void deflect(android.net.Uri);
     method public void disconnect();
     method public java.util.List<java.lang.String> getCannedTextResponses();
     method public java.util.List<android.telecom.Call> getChildren();
@@ -40617,6 +40618,7 @@ package android.telecom {
     field public static final int CAPABILITY_SUPPORTS_VT_REMOTE_BIDIRECTIONAL = 3072; // 0xc00
     field public static final int CAPABILITY_SUPPORTS_VT_REMOTE_RX = 1024; // 0x400
     field public static final int CAPABILITY_SUPPORTS_VT_REMOTE_TX = 2048; // 0x800
+    field public static final int CAPABILITY_SUPPORT_DEFLECT = 16777216; // 0x1000000
     field public static final int CAPABILITY_SUPPORT_HOLD = 2; // 0x2
     field public static final int CAPABILITY_SWAP_CONFERENCE = 8; // 0x8
     field public static final int PROPERTY_ASSISTED_DIALING_USED = 512; // 0x200
@@ -40764,6 +40766,7 @@ package android.telecom {
     method public void onAnswer();
     method public void onCallAudioStateChanged(android.telecom.CallAudioState);
     method public void onCallEvent(java.lang.String, android.os.Bundle);
+    method public void onDeflect(android.net.Uri);
     method public void onDisconnect();
     method public void onExtrasChanged(android.os.Bundle);
     method public void onHandoverComplete();
@@ -40832,6 +40835,7 @@ package android.telecom {
     field public static final int CAPABILITY_SUPPORTS_VT_REMOTE_BIDIRECTIONAL = 3072; // 0xc00
     field public static final int CAPABILITY_SUPPORTS_VT_REMOTE_RX = 1024; // 0x400
     field public static final int CAPABILITY_SUPPORTS_VT_REMOTE_TX = 2048; // 0x800
+    field public static final int CAPABILITY_SUPPORT_DEFLECT = 33554432; // 0x2000000
     field public static final int CAPABILITY_SUPPORT_HOLD = 2; // 0x2
     field public static final int CAPABILITY_SWAP_CONFERENCE = 8; // 0x8
     field public static final java.lang.String EVENT_CALL_MERGE_FAILED = "android.telecom.event.CALL_MERGE_FAILED";
diff --git a/api/system-current.txt b/api/system-current.txt
index 9922df6b500f3..7211500e576c5 100644
--- a/api/system-current.txt
+++ b/api/system-current.txt
@@ -5965,6 +5965,7 @@ package android.telephony.ims.stub {
     ctor public ImsCallSessionImplBase();
     method public void accept(int, android.telephony.ims.ImsStreamMediaProfile);
     method public void close();
+    method public void deflect(java.lang.String);
     method public void extendToConference(java.lang.String[]);
     method public java.lang.String getCallId();
     method public android.telephony.ims.ImsCallProfile getCallProfile();
diff --git a/telecomm/java/android/telecom/Call.java b/telecomm/java/android/telecom/Call.java
index 6799417939f2f..8c18518a6d679 100644
--- a/telecomm/java/android/telecom/Call.java
+++ b/telecomm/java/android/telecom/Call.java
@@ -352,8 +352,11 @@ public final class Call {
          */
         public static final int CAPABILITY_CAN_PULL_CALL = 0x00800000;
 
+        /** Call supports the deflect feature. */
+        public static final int CAPABILITY_SUPPORT_DEFLECT = 0x01000000;
+
         //******************************************************************************************
-        // Next CAPABILITY value: 0x01000000
+        // Next CAPABILITY value: 0x02000000
         //******************************************************************************************
 
         /**
@@ -528,6 +531,9 @@ public final class Call {
             if (can(capabilities, CAPABILITY_CAN_PULL_CALL)) {
                 builder.append(" CAPABILITY_CAN_PULL_CALL");
             }
+            if (can(capabilities, CAPABILITY_SUPPORT_DEFLECT)) {
+                builder.append(" CAPABILITY_SUPPORT_DEFLECT");
+            }
             builder.append("]");
             return builder.toString();
         }
@@ -1234,6 +1240,15 @@ public final class Call {
         mInCallAdapter.answerCall(mTelecomCallId, videoState);
     }
 
+    /**
+     * Instructs this {@link #STATE_RINGING} {@code Call} to deflect.
+     *
+     * @param address The address to which the call will be deflected.
+     */
+    public void deflect(Uri address) {
+        mInCallAdapter.deflectCall(mTelecomCallId, address);
+    }
+
     /**
      * Instructs this {@link #STATE_RINGING} {@code Call} to reject.
      *
diff --git a/telecomm/java/android/telecom/Connection.java b/telecomm/java/android/telecom/Connection.java
index e0b0bbf115449..24184e033c66b 100644
--- a/telecomm/java/android/telecom/Connection.java
+++ b/telecomm/java/android/telecom/Connection.java
@@ -328,8 +328,11 @@ public abstract class Connection extends Conferenceable {
      */
     public static final int CAPABILITY_CAN_PULL_CALL = 0x01000000;
 
+    /** Call supports the deflect feature. */
+    public static final int CAPABILITY_SUPPORT_DEFLECT = 0x02000000;
+
     //**********************************************************************************************
-    // Next CAPABILITY value: 0x02000000
+    // Next CAPABILITY value: 0x04000000
     //**********************************************************************************************
 
     /**
@@ -726,6 +729,9 @@ public abstract class Connection extends Conferenceable {
         if (can(capabilities, CAPABILITY_CAN_PULL_CALL)) {
             builder.append(isLong ? " CAPABILITY_CAN_PULL_CALL" : " pull");
         }
+        if (can(capabilities, CAPABILITY_SUPPORT_DEFLECT)) {
+            builder.append(isLong ? " CAPABILITY_SUPPORT_DEFLECT" : " sup_def");
+        }
 
         builder.append("]");
         return builder.toString();
@@ -2750,6 +2756,12 @@ public abstract class Connection extends Conferenceable {
         onAnswer(VideoProfile.STATE_AUDIO_ONLY);
     }
 
+    /**
+     * Notifies this Connection, which is in {@link #STATE_RINGING}, of
+     * a request to deflect.
+     */
+    public void onDeflect(Uri address) {}
+
     /**
      * Notifies this Connection, which is in {@link #STATE_RINGING}, of
      * a request to reject.
diff --git a/telecomm/java/android/telecom/ConnectionService.java b/telecomm/java/android/telecom/ConnectionService.java
index c1040adc5163f..211699ea59401 100644
--- a/telecomm/java/android/telecom/ConnectionService.java
+++ b/telecomm/java/android/telecom/ConnectionService.java
@@ -124,6 +124,7 @@ public abstract class ConnectionService extends Service {
     private static final String SESSION_ABORT = "CS.ab";
     private static final String SESSION_ANSWER = "CS.an";
     private static final String SESSION_ANSWER_VIDEO = "CS.anV";
+    private static final String SESSION_DEFLECT = "CS.def";
     private static final String SESSION_REJECT = "CS.r";
     private static final String SESSION_REJECT_MESSAGE = "CS.rWM";
     private static final String SESSION_SILENCE = "CS.s";
@@ -181,6 +182,7 @@ public abstract class ConnectionService extends Service {
     private static final int MSG_CONNECTION_SERVICE_FOCUS_GAINED = 31;
     private static final int MSG_HANDOVER_FAILED = 32;
     private static final int MSG_HANDOVER_COMPLETE = 33;
+    private static final int MSG_DEFLECT = 34;
 
     private static Connection sNullConnection;
 
@@ -352,6 +354,20 @@ public abstract class ConnectionService extends Service {
             }
         }
 
+        @Override
+        public void deflect(String callId, Uri address, Session.Info sessionInfo) {
+            Log.startSession(sessionInfo, SESSION_DEFLECT);
+            try {
+                SomeArgs args = SomeArgs.obtain();
+                args.arg1 = callId;
+                args.arg2 = address;
+                args.arg3 = Log.createSubsession();
+                mHandler.obtainMessage(MSG_DEFLECT, args).sendToTarget();
+            } finally {
+                Log.endSession();
+            }
+        }
+
         @Override
         public void reject(String callId, Session.Info sessionInfo) {
             Log.startSession(sessionInfo, SESSION_REJECT);
@@ -847,6 +863,17 @@ public abstract class ConnectionService extends Service {
                     }
                     break;
                 }
+                case MSG_DEFLECT: {
+                    SomeArgs args = (SomeArgs) msg.obj;
+                    Log.continueSession((Session) args.arg3, SESSION_HANDLER + SESSION_DEFLECT);
+                    try {
+                        deflect((String) args.arg1, (Uri) args.arg2);
+                    } finally {
+                        args.recycle();
+                        Log.endSession();
+                    }
+                    break;
+                }
                 case MSG_REJECT: {
                     SomeArgs args = (SomeArgs) msg.obj;
                     Log.continueSession((Session) args.arg2, SESSION_HANDLER + SESSION_REJECT);
@@ -1605,6 +1632,11 @@ public abstract class ConnectionService extends Service {
         findConnectionForAction(callId, "answer").onAnswer();
     }
 
+    private void deflect(String callId, Uri address) {
+        Log.d(this, "deflect %s", callId);
+        findConnectionForAction(callId, "deflect").onDeflect(address);
+    }
+
     private void reject(String callId) {
         Log.d(this, "reject %s", callId);
         findConnectionForAction(callId, "reject").onReject();
diff --git a/telecomm/java/android/telecom/InCallAdapter.java b/telecomm/java/android/telecom/InCallAdapter.java
index 658685fe29074..8678e33f68b6b 100644
--- a/telecomm/java/android/telecom/InCallAdapter.java
+++ b/telecomm/java/android/telecom/InCallAdapter.java
@@ -16,6 +16,7 @@
 
 package android.telecom;
 
+import android.net.Uri;
 import android.bluetooth.BluetoothDevice;
 import android.os.Bundle;
 import android.os.RemoteException;
@@ -60,6 +61,19 @@ public final class InCallAdapter {
         }
     }
 
+    /**
+     * Instructs Telecom to deflect the specified call.
+     *
+     * @param callId The identifier of the call to deflect.
+     * @param address The address to deflect.
+     */
+    public void deflectCall(String callId, Uri address) {
+        try {
+            mAdapter.deflectCall(callId, address);
+        } catch (RemoteException e) {
+        }
+    }
+
     /**
      * Instructs Telecom to reject the specified call.
      *
diff --git a/telecomm/java/com/android/internal/telecom/IConnectionService.aidl b/telecomm/java/com/android/internal/telecom/IConnectionService.aidl
index 3a84f004462e0..e35093c9656a6 100644
--- a/telecomm/java/com/android/internal/telecom/IConnectionService.aidl
+++ b/telecomm/java/com/android/internal/telecom/IConnectionService.aidl
@@ -16,6 +16,7 @@
 
 package com.android.internal.telecom;
 
+import android.net.Uri;
 import android.os.Bundle;
 import android.os.ParcelFileDescriptor;
 import android.telecom.CallAudioState;
@@ -58,6 +59,8 @@ oneway interface IConnectionService {
 
     void answer(String callId, in Session.Info sessionInfo);
 
+    void deflect(String callId, in Uri address, in Session.Info sessionInfo);
+
     void reject(String callId, in Session.Info sessionInfo);
 
     void rejectWithMessage(String callId, String message, in Session.Info sessionInfo);
diff --git a/telecomm/java/com/android/internal/telecom/IInCallAdapter.aidl b/telecomm/java/com/android/internal/telecom/IInCallAdapter.aidl
index 87ccd3ed43694..57df5c1e548e5 100644
--- a/telecomm/java/com/android/internal/telecom/IInCallAdapter.aidl
+++ b/telecomm/java/com/android/internal/telecom/IInCallAdapter.aidl
@@ -16,6 +16,7 @@
 
 package com.android.internal.telecom;
 
+import android.net.Uri;
 import android.os.Bundle;
 import android.telecom.PhoneAccountHandle;
 
@@ -29,6 +30,8 @@ import android.telecom.PhoneAccountHandle;
 oneway interface IInCallAdapter {
     void answerCall(String callId, int videoState);
 
+    void deflectCall(String callId, in Uri address);
+
     void rejectCall(String callId, boolean rejectWithMessage, String textMessage);
 
     void disconnectCall(String callId);
diff --git a/telephony/java/android/telephony/CarrierConfigManager.java b/telephony/java/android/telephony/CarrierConfigManager.java
index 7eb691be9d25c..c8c898ad37cfc 100644
--- a/telephony/java/android/telephony/CarrierConfigManager.java
+++ b/telephony/java/android/telephony/CarrierConfigManager.java
@@ -1376,6 +1376,12 @@ public class CarrierConfigManager {
      */
     public static final String KEY_ALLOW_HOLD_IN_IMS_CALL_BOOL = "allow_hold_in_ims_call";
 
+    /**
+     * Flag indicating whether the carrier supports call deflection for an incoming IMS call.
+     * @hide
+     */
+    public static final String KEY_CARRIER_ALLOW_DEFLECT_IMS_CALL_BOOL =
+            "carrier_allow_deflect_ims_call_bool";
 
     /**
      * Flag indicating whether the carrier always wants to play an "on-hold" tone when a call has
@@ -1844,6 +1850,7 @@ public class CarrierConfigManager {
     static {
         sDefaults = new PersistableBundle();
         sDefaults.putBoolean(KEY_ALLOW_HOLD_IN_IMS_CALL_BOOL, true);
+        sDefaults.putBoolean(KEY_CARRIER_ALLOW_DEFLECT_IMS_CALL_BOOL, false);
         sDefaults.putBoolean(KEY_ALWAYS_PLAY_REMOTE_HOLD_TONE_BOOL, false);
         sDefaults.putBoolean(KEY_ADDITIONAL_CALL_SETTING_BOOL, true);
         sDefaults.putBoolean(KEY_ALLOW_EMERGENCY_NUMBERS_IN_CALL_LOG_BOOL, false);
diff --git a/telephony/java/android/telephony/ims/ImsCallSession.java b/telephony/java/android/telephony/ims/ImsCallSession.java
index c3d103f88db35..a20d4f5ad27b2 100644
--- a/telephony/java/android/telephony/ims/ImsCallSession.java
+++ b/telephony/java/android/telephony/ims/ImsCallSession.java
@@ -753,6 +753,22 @@ public class ImsCallSession {
         }
     }
 
+    /**
+     * Deflects an incoming call.
+     *
+     * @param number number to be deflected to
+     */
+    public void deflect(String number) {
+        if (mClosed) {
+            return;
+        }
+
+        try {
+            miSession.deflect(number);
+        } catch (RemoteException e) {
+        }
+    }
+
     /**
      * Rejects an incoming call or session update.
      *
diff --git a/telephony/java/android/telephony/ims/compat/stub/ImsCallSessionImplBase.java b/telephony/java/android/telephony/ims/compat/stub/ImsCallSessionImplBase.java
index 00cb1e25f66d5..e5ed825728730 100644
--- a/telephony/java/android/telephony/ims/compat/stub/ImsCallSessionImplBase.java
+++ b/telephony/java/android/telephony/ims/compat/stub/ImsCallSessionImplBase.java
@@ -181,6 +181,15 @@ public class ImsCallSessionImplBase extends IImsCallSession.Stub {
     public void accept(int callType, ImsStreamMediaProfile profile) {
     }
 
+    /**
+     * Deflects an incoming call.
+     *
+     * @param deflectNumber number to deflect the call
+     */
+    @Override
+    public void deflect(String deflectNumber) {
+    }
+
     /**
      * Rejects an incoming call or session update.
      *
diff --git a/telephony/java/android/telephony/ims/stub/ImsCallSessionImplBase.java b/telephony/java/android/telephony/ims/stub/ImsCallSessionImplBase.java
index c6ca6fdb0fd8a..7b9fe2b144ab0 100644
--- a/telephony/java/android/telephony/ims/stub/ImsCallSessionImplBase.java
+++ b/telephony/java/android/telephony/ims/stub/ImsCallSessionImplBase.java
@@ -173,6 +173,11 @@ public class ImsCallSessionImplBase implements AutoCloseable {
             ImsCallSessionImplBase.this.accept(callType, profile);
         }
 
+        @Override
+        public void deflect(String deflectNumber) {
+            ImsCallSessionImplBase.this.deflect(deflectNumber);
+        }
+
         @Override
         public void reject(int reason) {
             ImsCallSessionImplBase.this.reject(reason);
@@ -394,6 +399,14 @@ public class ImsCallSessionImplBase implements AutoCloseable {
     public void accept(int callType, ImsStreamMediaProfile profile) {
     }
 
+    /**
+     * Deflects an incoming call.
+     *
+     * @param deflectNumber number to deflect the call
+     */
+    public void deflect(String deflectNumber) {
+    }
+
     /**
      * Rejects an incoming call or session update.
      *
diff --git a/telephony/java/com/android/ims/internal/IImsCallSession.aidl b/telephony/java/com/android/ims/internal/IImsCallSession.aidl
index 203e6cf9c577a..15234e5c0e92a 100644
--- a/telephony/java/com/android/ims/internal/IImsCallSession.aidl
+++ b/telephony/java/com/android/ims/internal/IImsCallSession.aidl
@@ -135,6 +135,13 @@ interface IImsCallSession {
      */
     void accept(int callType, in ImsStreamMediaProfile profile);
 
+    /**
+     * Deflects an incoming call.
+     *
+     * @param deflectNumber number to deflect the call
+     */
+    void deflect(String deflectNumber);
+
     /**
      * Rejects an incoming call or session update.
      *