diff --git a/api/system-current.txt b/api/system-current.txt
index 5da2db8383e06..254101d107e8e 100755
--- a/api/system-current.txt
+++ b/api/system-current.txt
@@ -9423,6 +9423,7 @@ package android.telephony {
     field public static final int IMS_ACCESS_BLOCKED = 60; // 0x3c
     field public static final int IMS_MERGED_SUCCESSFULLY = 45; // 0x2d
     field public static final int IMS_SIP_ALTERNATE_EMERGENCY_CALL = 71; // 0x47
+    field public static final int INCOMING_AUTO_REJECTED = 81; // 0x51
     field public static final int INCOMING_MISSED = 1; // 0x1
     field public static final int INCOMING_REJECTED = 16; // 0x10
     field public static final int INVALID_CREDENTIALS = 10; // 0xa
@@ -10556,6 +10557,7 @@ package android.telephony.ims {
     field public static final int DIALSTRING_USSD = 2; // 0x2
     field public static final String EXTRA_ADDITIONAL_CALL_INFO = "AdditionalCallInfo";
     field public static final String EXTRA_ADDITIONAL_SIP_INVITE_FIELDS = "android.telephony.ims.extra.ADDITIONAL_SIP_INVITE_FIELDS";
+    field public static final String EXTRA_CALL_DISCONNECT_CAUSE = "android.telephony.ims.extra.CALL_DISCONNECT_CAUSE";
     field public static final String EXTRA_CALL_RAT_TYPE = "CallRadioTech";
     field public static final String EXTRA_CHILD_NUMBER = "ChildNum";
     field public static final String EXTRA_CNA = "cna";
diff --git a/api/test-current.txt b/api/test-current.txt
index a7cecf8d94695..4037d8dd4fa1c 100644
--- a/api/test-current.txt
+++ b/api/test-current.txt
@@ -3360,6 +3360,7 @@ package android.telephony.ims {
     field public static final int DIALSTRING_USSD = 2; // 0x2
     field public static final String EXTRA_ADDITIONAL_CALL_INFO = "AdditionalCallInfo";
     field public static final String EXTRA_ADDITIONAL_SIP_INVITE_FIELDS = "android.telephony.ims.extra.ADDITIONAL_SIP_INVITE_FIELDS";
+    field public static final String EXTRA_CALL_DISCONNECT_CAUSE = "android.telephony.ims.extra.CALL_DISCONNECT_CAUSE";
     field public static final String EXTRA_CALL_RAT_TYPE = "CallRadioTech";
     field public static final String EXTRA_CHILD_NUMBER = "ChildNum";
     field public static final String EXTRA_CNA = "cna";
diff --git a/telephony/java/android/telephony/DisconnectCause.java b/telephony/java/android/telephony/DisconnectCause.java
index 04ec4b6949afb..d7489146d6628 100644
--- a/telephony/java/android/telephony/DisconnectCause.java
+++ b/telephony/java/android/telephony/DisconnectCause.java
@@ -360,6 +360,12 @@ public final class DisconnectCause {
      */
     public static final int OUTGOING_EMERGENCY_CALL_PLACED = 80;
 
+    /**
+     * Indicates that incoming call was rejected by the modem before the call went in ringing
+     */
+    public static final int INCOMING_AUTO_REJECTED = 81;
+
+
     //*********************************************************************************************
     // When adding a disconnect type:
     // 1) Update toString() with the newly added disconnect type.
@@ -536,6 +542,8 @@ public final class DisconnectCause {
             return "WFC_SERVICE_NOT_AVAILABLE_IN_THIS_LOCATION";
         case OUTGOING_EMERGENCY_CALL_PLACED:
             return "OUTGOING_EMERGENCY_CALL_PLACED";
+            case INCOMING_AUTO_REJECTED:
+                return "INCOMING_AUTO_REJECTED";
         default:
             return "INVALID: " + cause;
         }
diff --git a/telephony/java/android/telephony/ims/ImsCallProfile.java b/telephony/java/android/telephony/ims/ImsCallProfile.java
index 87e53919c2a1b..d27aa1cf49e15 100644
--- a/telephony/java/android/telephony/ims/ImsCallProfile.java
+++ b/telephony/java/android/telephony/ims/ImsCallProfile.java
@@ -278,6 +278,14 @@ public final class ImsCallProfile implements Parcelable {
     public static final String EXTRA_ADDITIONAL_SIP_INVITE_FIELDS =
                                   "android.telephony.ims.extra.ADDITIONAL_SIP_INVITE_FIELDS";
 
+    /**
+     * CallDisconnectCause: Specify call disconnect cause. This extra should be a code
+     * corresponding to ImsReasonInfo and should only be populated in the case that the
+     * call has already been missed
+     */
+    public static final String EXTRA_CALL_DISCONNECT_CAUSE =
+                                 "android.telephony.ims.extra.CALL_DISCONNECT_CAUSE";
+
     /**
      * Extra key which the RIL can use to indicate the radio technology used for a call.
      * Valid values are: