diff --git a/api/current.txt b/api/current.txt
index 72e0447..01a260c 100644
--- a/api/current.txt
+++ b/api/current.txt
@@ -30122,6 +30122,9 @@
     field public static final int CAPABILITY_SUPPORTS_VT_REMOTE_TX = 2048; // 0x800
     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 EXTRA_CALL_SUBJECT = "android.telecom.extra.CALL_SUBJECT";
+    field public static final java.lang.String EXTRA_CHILD_ADDRESS = "android.telecom.extra.CHILD_ADDRESS";
+    field public static final java.lang.String EXTRA_LAST_FORWARDED_NUMBER = "android.telecom.extra.LAST_FORWARDED_NUMBER";
     field public static final int STATE_ACTIVE = 4; // 0x4
     field public static final int STATE_DIALING = 3; // 0x3
     field public static final int STATE_DISCONNECTED = 6; // 0x6
@@ -30482,6 +30485,7 @@
     field public static final java.lang.String EXTRA_CALL_BACK_NUMBER = "android.telecom.extra.CALL_BACK_NUMBER";
     field public static final java.lang.String EXTRA_CALL_DISCONNECT_CAUSE = "android.telecom.extra.CALL_DISCONNECT_CAUSE";
     field public static final java.lang.String EXTRA_CALL_DISCONNECT_MESSAGE = "android.telecom.extra.CALL_DISCONNECT_MESSAGE";
+    field public static final java.lang.String EXTRA_CALL_SUBJECT = "android.telecom.extra.CALL_SUBJECT";
     field public static final java.lang.String EXTRA_CHANGE_DEFAULT_DIALER_PACKAGE_NAME = "android.telecom.extra.CHANGE_DEFAULT_DIALER_PACKAGE_NAME";
     field public static final java.lang.String EXTRA_INCOMING_CALL_ADDRESS = "android.telecom.extra.INCOMING_CALL_ADDRESS";
     field public static final java.lang.String EXTRA_INCOMING_CALL_EXTRAS = "android.telecom.extra.INCOMING_CALL_EXTRAS";
diff --git a/api/system-current.txt b/api/system-current.txt
index 65214b8..0017d4e 100644
--- a/api/system-current.txt
+++ b/api/system-current.txt
@@ -32306,6 +32306,9 @@
     field public static final int CAPABILITY_SUPPORTS_VT_REMOTE_TX = 2048; // 0x800
     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 EXTRA_CALL_SUBJECT = "android.telecom.extra.CALL_SUBJECT";
+    field public static final java.lang.String EXTRA_CHILD_ADDRESS = "android.telecom.extra.CHILD_ADDRESS";
+    field public static final java.lang.String EXTRA_LAST_FORWARDED_NUMBER = "android.telecom.extra.LAST_FORWARDED_NUMBER";
     field public static final int STATE_ACTIVE = 4; // 0x4
     field public static final int STATE_DIALING = 3; // 0x3
     field public static final int STATE_DISCONNECTED = 6; // 0x6
@@ -32714,6 +32717,7 @@
     field public static final java.lang.String EXTRA_CALL_BACK_NUMBER = "android.telecom.extra.CALL_BACK_NUMBER";
     field public static final java.lang.String EXTRA_CALL_DISCONNECT_CAUSE = "android.telecom.extra.CALL_DISCONNECT_CAUSE";
     field public static final java.lang.String EXTRA_CALL_DISCONNECT_MESSAGE = "android.telecom.extra.CALL_DISCONNECT_MESSAGE";
+    field public static final java.lang.String EXTRA_CALL_SUBJECT = "android.telecom.extra.CALL_SUBJECT";
     field public static final java.lang.String EXTRA_CHANGE_DEFAULT_DIALER_PACKAGE_NAME = "android.telecom.extra.CHANGE_DEFAULT_DIALER_PACKAGE_NAME";
     field public static final java.lang.String EXTRA_CONNECTION_SERVICE = "android.telecom.extra.CONNECTION_SERVICE";
     field public static final java.lang.String EXTRA_INCOMING_CALL_ADDRESS = "android.telecom.extra.INCOMING_CALL_ADDRESS";
diff --git a/telecomm/java/android/telecom/Connection.java b/telecomm/java/android/telecom/Connection.java
index bf78712..d663952 100644
--- a/telecomm/java/android/telecom/Connection.java
+++ b/telecomm/java/android/telecom/Connection.java
@@ -252,6 +252,29 @@
     // Next CAPABILITY value: 0x00400000
     //**********************************************************************************************
 
+    /**
+     * Connection extra key used to store the last forwarded number associated with the current
+     * connection.  Used to communicate to the user interface that the connection was forwarded via
+     * the specified number.
+     */
+    public static final String EXTRA_LAST_FORWARDED_NUMBER =
+            "android.telecom.extra.LAST_FORWARDED_NUMBER";
+
+    /**
+     * Connection extra key used to store a child number associated with the current connection.
+     * Used to communicate to the user interface that the connection was received via
+     * a child address (i.e. phone number) associated with the {@link PhoneAccount}'s primary
+     * address.
+     */
+    public static final String EXTRA_CHILD_ADDRESS = "android.telecom.extra.CHILD_ADDRESS";
+
+    /**
+     * Connection extra key used to store the subject for an incoming call.  The user interface can
+     * query this extra and display its contents for incoming calls.  Will only be used if the
+     * {@link PhoneAccount} supports the capability {@link PhoneAccount#CAPABILITY_CALL_SUBJECT}.
+     */
+    public static final String EXTRA_CALL_SUBJECT = "android.telecom.extra.CALL_SUBJECT";
+
     // Flag controlling whether PII is emitted into the logs
     private static final boolean PII_DEBUG = Log.isLoggable(android.util.Log.DEBUG);
 
diff --git a/telecomm/java/android/telecom/TelecomManager.java b/telecomm/java/android/telecom/TelecomManager.java
index 3b59f27d..067e734 100644
--- a/telecomm/java/android/telecom/TelecomManager.java
+++ b/telecomm/java/android/telecom/TelecomManager.java
@@ -177,6 +177,13 @@
             "android.telecom.extra.PHONE_ACCOUNT_HANDLE";
 
     /**
+     * Optional extra for {@link android.content.Intent#ACTION_CALL} containing a string call
+     * subject which will be associated with an outgoing call.  Should only be specified if the
+     * {@link PhoneAccount} supports the capability {@link PhoneAccount#CAPABILITY_CALL_SUBJECT}.
+     */
+    public static final String EXTRA_CALL_SUBJECT = "android.telecom.extra.CALL_SUBJECT";
+
+    /**
      * The extra used by a {@link ConnectionService} to provide the handle of the caller that
      * has initiated a new incoming call.
      */