diff --git a/telephony/java/android/telephony/CarrierConfigManager.java b/telephony/java/android/telephony/CarrierConfigManager.java
index 9806199003d78..19f8203f75020 100755
--- a/telephony/java/android/telephony/CarrierConfigManager.java
+++ b/telephony/java/android/telephony/CarrierConfigManager.java
@@ -1020,6 +1020,15 @@ public class CarrierConfigManager {
     public static final String KEY_SUPPORT_MANAGE_IMS_CONFERENCE_CALL_BOOL =
             "support_manage_ims_conference_call_bool";
 
+    /**
+     * Determines whether the IMS conference merge process supports and returns its participants
+     * data. When {@code true}, on merge complete, conference call would have a list of its
+     * participants returned in XML format, {@code false otherwise}.
+     * @hide
+     */
+    public static final String KEY_SUPPORT_IMS_CONFERENCE_EVENT_PACKAGE_BOOL =
+            "support_ims_conference_event_package_bool";
+
     /**
      * Determines whether High Definition audio property is displayed in the dialer UI.
      * If {@code false}, remove the HD audio property from the connection so that HD audio related
@@ -3148,6 +3157,7 @@ public class CarrierConfigManager {
         sDefaults.putBoolean(KEY_SUPPORT_CONFERENCE_CALL_BOOL, true);
         sDefaults.putBoolean(KEY_SUPPORT_IMS_CONFERENCE_CALL_BOOL, true);
         sDefaults.putBoolean(KEY_SUPPORT_MANAGE_IMS_CONFERENCE_CALL_BOOL, true);
+        sDefaults.putBoolean(KEY_SUPPORT_IMS_CONFERENCE_EVENT_PACKAGE_BOOL, true);
         sDefaults.putBoolean(KEY_SUPPORT_VIDEO_CONFERENCE_CALL_BOOL, false);
         sDefaults.putBoolean(KEY_IS_IMS_CONFERENCE_SIZE_ENFORCED_BOOL, false);
         sDefaults.putInt(KEY_IMS_CONFERENCE_SIZE_LIMIT_INT, 5);