diff --git a/telephony/java/android/telephony/CarrierConfigManager.java b/telephony/java/android/telephony/CarrierConfigManager.java
index 00a49a1d4f5fe..c414302917b89 100755
--- a/telephony/java/android/telephony/CarrierConfigManager.java
+++ b/telephony/java/android/telephony/CarrierConfigManager.java
@@ -2311,6 +2311,13 @@ public class CarrierConfigManager {
      */
     public static final String KEY_RTT_DOWNGRADE_SUPPORTED_BOOL = "rtt_downgrade_supported_bool";
 
+    /**
+     * Indicates if the TTY HCO and VCO options should be hidden in the accessibility menu
+     * if the device is capable of RTT.
+     * @hide
+     */
+    public static final String KEY_HIDE_TTY_HCO_VCO_WITH_RTT_BOOL = "hide_tty_hco_vco_with_rtt";
+
     /**
      * The flag to disable the popup dialog which warns the user of data charges.
      * @hide
@@ -3350,6 +3357,7 @@ public class CarrierConfigManager {
         sDefaults.putBoolean(KEY_SHOW_IMS_REGISTRATION_STATUS_BOOL, false);
         sDefaults.putBoolean(KEY_RTT_SUPPORTED_BOOL, false);
         sDefaults.putBoolean(KEY_TTY_SUPPORTED_BOOL, true);
+        sDefaults.putBoolean(KEY_HIDE_TTY_HCO_VCO_WITH_RTT_BOOL, false);
         sDefaults.putBoolean(KEY_DISABLE_CHARGE_INDICATION_BOOL, false);
         sDefaults.putBoolean(KEY_SUPPORT_NO_REPLY_TIMER_FOR_CFNRY_BOOL, true);
         sDefaults.putStringArray(KEY_FEATURE_ACCESS_CODES_STRING_ARRAY, null);