diff --git a/src/bacnet/datalink/dlmstp.c b/src/bacnet/datalink/dlmstp.c
index 2ab34226..a259eb9d 100644
--- a/src/bacnet/datalink/dlmstp.c
+++ b/src/bacnet/datalink/dlmstp.c
@@ -372,6 +372,11 @@ uint16_t dlmstp_receive(
             MSTP_Port->DataRegister = data_register;
         }
         MSTP_Receive_Frame_FSM(MSTP_Port);
+        if (MSTP_Port->receive_state == MSTP_RECEIVE_STATE_PREAMBLE) {
+            if (user->Preamble_Callback) {
+                user->Preamble_Callback();
+            }
+        }
         /* process another byte, if available */
         if (!driver->read(NULL)) {
             break;
@@ -387,9 +392,21 @@ uint16_t dlmstp_receive(
     }
     if (MSTP_Port->ReceivedValidFrame) {
         user->Statistics.receive_valid_frame_counter++;
+        if (user->Valid_Frame_Rx_Callback) {
+            user->Valid_Frame_Rx_Callback(
+                MSTP_Port->SourceAddress, MSTP_Port->DestinationAddress,
+                MSTP_Port->FrameType, MSTP_Port->InputBuffer,
+                MSTP_Port->DataLength);
+        }
     }
     if (MSTP_Port->ReceivedInvalidFrame) {
         user->Statistics.receive_invalid_frame_counter++;
+        if (user->Invalid_Frame_Rx_Callback) {
+            user->Invalid_Frame_Rx_Callback(
+                MSTP_Port->SourceAddress, MSTP_Port->DestinationAddress,
+                MSTP_Port->FrameType, MSTP_Port->InputBuffer,
+                MSTP_Port->DataLength);
+        }
     }
     if (MSTP_Port->receive_state == MSTP_RECEIVE_STATE_IDLE) {
         /* only node state machines while rx is idle */
@@ -805,6 +822,80 @@ uint32_t dlmstp_baud_rate(void)
     return driver->baud_rate();
 }
 
+/**
+ * @brief Set the MS/TP Frame Complete callback
+ * @param cb_func - callback function to be called when a frame is received
+ */
+void dlmstp_set_frame_rx_complete_callback(
+    dlmstp_hook_frame_rx_complete_cb cb_func)
+{
+    struct dlmstp_user_data_t *user;
+
+    if (!MSTP_Port) {
+        return;
+    }
+    user = MSTP_Port->UserData;
+    if (!user) {
+        return;
+    }
+    user->Valid_Frame_Rx_Callback = cb_func;
+}
+
+/**
+ * @brief Set the MS/TP Frame Complete callback
+ * @param cb_func - callback function to be called when a frame is received
+ */
+void dlmstp_set_invalid_frame_rx_complete_callback(
+    dlmstp_hook_frame_rx_complete_cb cb_func)
+{
+    struct dlmstp_user_data_t *user;
+
+    if (!MSTP_Port) {
+        return;
+    }
+    user = MSTP_Port->UserData;
+    if (!user) {
+        return;
+    }
+    user->Invalid_Frame_Rx_Callback = cb_func;
+}
+
+/**
+ * @brief Set the MS/TP Preamble callback
+ * @param cb_func - callback function to be called when a preamble is received
+ */
+void dlmstp_set_frame_rx_start_callback(dlmstp_hook_frame_rx_start_cb cb_func)
+{
+    struct dlmstp_user_data_t *user;
+
+    if (!MSTP_Port) {
+        return;
+    }
+    user = MSTP_Port->UserData;
+    if (!user) {
+        return;
+    }
+    user->Preamble_Callback = cb_func;
+}
+
+/**
+ * @brief Reset the MS/TP statistics
+ */
+void dlmstp_reset_statistics(void)
+{
+    struct dlmstp_user_data_t *user;
+    struct dlmstp_statistics *stats;
+
+    if (!MSTP_Port) {
+        return;
+    }
+    user = MSTP_Port->UserData;
+    if (!user) {
+        return;
+    }
+    memset(&user->Statistics, 0, sizeof(struct dlmstp_statistics));
+}
+
 /**
  * @brief Copy the MSTP port statistics if they exist
  * @param statistics - MSTP port statistics
diff --git a/src/bacnet/datalink/dlmstp.h b/src/bacnet/datalink/dlmstp.h
index da12eafd..2cf1c744 100644
--- a/src/bacnet/datalink/dlmstp.h
+++ b/src/bacnet/datalink/dlmstp.h
@@ -82,20 +82,6 @@ struct dlmstp_rs485_driver {
     void (*silence_reset)(void);
 };
 
-/**
- * An example structure of user data for BACnet MS/TP
- */
-struct dlmstp_user_data_t {
-    struct dlmstp_statistics Statistics;
-    struct dlmstp_rs485_driver *RS485_Driver;
-    /* the PDU Queue is made of Nmax_info_frames x dlmstp_packet's */
-    RING_BUFFER PDU_Queue;
-    struct dlmstp_packet PDU_Buffer[DLMSTP_MAX_INFO_FRAMES];
-    bool Initialized;
-    bool ReceivePacketPending;
-    void *Context;
-};
-
 /* callback to signify the receipt of a preamble */
 typedef void (*dlmstp_hook_frame_rx_start_cb)(void);
 
@@ -107,6 +93,23 @@ typedef void (*dlmstp_hook_frame_rx_complete_cb)(
     uint8_t *pdu,
     uint16_t pdu_len);
 
+/**
+ * An example structure of user data for BACnet MS/TP
+ */
+struct dlmstp_user_data_t {
+    struct dlmstp_statistics Statistics;
+    struct dlmstp_rs485_driver *RS485_Driver;
+    dlmstp_hook_frame_rx_start_cb Preamble_Callback;
+    dlmstp_hook_frame_rx_complete_cb Valid_Frame_Rx_Callback;
+    dlmstp_hook_frame_rx_complete_cb Invalid_Frame_Rx_Callback;
+    /* the PDU Queue is made of Nmax_info_frames x dlmstp_packet's */
+    RING_BUFFER PDU_Queue;
+    struct dlmstp_packet PDU_Buffer[DLMSTP_MAX_INFO_FRAMES];
+    bool Initialized;
+    bool ReceivePacketPending;
+    void *Context;
+};
+
 #ifdef __cplusplus
 extern "C" {
 #endif /* __cplusplus */
@@ -216,6 +219,9 @@ void dlmstp_silence_reset(void *arg);
 BACNET_STACK_EXPORT
 void dlmstp_set_frame_rx_complete_callback(
     dlmstp_hook_frame_rx_complete_cb cb_func);
+BACNET_STACK_EXPORT
+void dlmstp_set_invalid_frame_rx_complete_callback(
+    dlmstp_hook_frame_rx_complete_cb cb_func);
 
 /* Set the callback function to be called every time the start of a */
 /* frame is detected.  This is not necessary for normal usage, but is */