diff --git a/ril/v1_1/IRil.idl b/ril/v1_1/IRil.idl
index 81d686e4da77913ff175337046efdc3847de3106..6fb22cab081e43722a66622e4857662856530cb7 100644
--- a/ril/v1_1/IRil.idl
+++ b/ril/v1_1/IRil.idl
@@ -305,6 +305,20 @@ interface IRil {
     [oneway] SetCallTransferInfo([in] int slotId, [in] int serialId,
         [in] struct CallForwardSetInfo callForwardSetInfo);
 
+    /**
+     * @brief do the Explicit Call Transfer
+     *
+     * @param slotId Card slot ID.
+     * @param serialId Serial ID of a request.
+     *
+     * @return Returns <b>0</b> if the operation is successful.
+     * @return Returns a non-0 value if the operation fails.
+     *
+     * @since 4.0
+     * @version 1.1
+     */
+    [oneway] ExplicitCallTransferConnection([in] int slotId, [in] int serialId);
+
     /**
      * @brief Obtains the call restriction information.
      *
@@ -593,6 +607,22 @@ interface IRil {
      */
     [oneway] SetBarringPassword([in] int slotId, [in] int serialId, [in] struct SetBarringInfo setBarringInfo);
 
+    /**
+     * @brief Sets the voNR switch.
+     *
+     * @param slotId Card slot ID.
+     * @param serialId Serial ID of a request.
+     * @param status Whether to enable the VoNR switch. The value <b>0</b> means to 
+     * disable the VoNR switch, and the value <b>1</b> means the opposite.
+     *
+     * @return Returns <b>0</b> if the operation is successful.
+     * @return Returns a non-0 value if the operation fails.
+     *
+     * @since 4.0
+     * @version 1.1
+     */
+    [oneway] SetVoNRSwitch([in] int slotId, [in] int serialId, [in] int status);
+
     /**
      * @brief Activates the packet data protocol (PDP) context.
      *
diff --git a/ril/v1_1/IRilCallback.idl b/ril/v1_1/IRilCallback.idl
index c45e08a7a792f652c8879e02306b0e522f8cef14..9cef3499de34c36bfd908edc2e48da7f204833bb 100644
--- a/ril/v1_1/IRilCallback.idl
+++ b/ril/v1_1/IRilCallback.idl
@@ -362,6 +362,17 @@ import ohos.hdi.ril.v1_1.Types;
      */
     SetCallTransferInfoResponse([in] struct RilRadioResponseInfo responseInfo);
 
+    /**
+     * @brief Callback for explicit call transfer.
+     *
+     * @param responseInfo Common response information, such as the card slot ID and request sequence ID.
+     * For details, see {@link RilRadioResponseInfo}.
+     *
+     * @since 4.0
+     * @version 1.1
+     */
+    ExplicitCallTransferConnectionResponse([in] struct RilRadioResponseInfo responseInfo);
+
     /**
      * @brief Callback for the response of querying call restriction information.
      *
@@ -547,6 +558,17 @@ import ohos.hdi.ril.v1_1.Types;
      */
     SetBarringPasswordResponse([in] struct RilRadioResponseInfo responseInfo);
 
+    /**
+     * @brief Callback for the response of setting the VoNR switch.
+     *
+     * @param responseInfo Common response information, such as the card slot ID and request sequence ID. 
+     * For details, see {@link RilRadioResponseInfo}.
+     *
+     * @since 4.0
+     * @version 1.1
+     */
+    SetVoNRSwitchResponse([in] struct RilRadioResponseInfo responseInfo);
+
     /**
      * @brief Callback for reporting status updates such as data service connection or disconnection.
      *