diff --git a/bacnet-stack/ports/win32/dlmstp.h b/bacnet-stack/ports/win32/dlmstp.h
deleted file mode 100644
index 1343d7a8..00000000
--- a/bacnet-stack/ports/win32/dlmstp.h
+++ /dev/null
@@ -1,110 +0,0 @@
-/*####COPYRIGHTBEGIN####
- -------------------------------------------
- Copyright (C) 2005 Steve Karg
-
- This program is free software; you can redistribute it and/or
- modify it under the terms of the GNU General Public License
- as published by the Free Software Foundation; either version 2
- of the License, or (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to:
- The Free Software Foundation, Inc.
- 59 Temple Place - Suite 330
- Boston, MA  02111-1307
- USA.
-
- As a special exception, if other files instantiate templates or
- use macros or inline functions from this file, or you compile
- this file and link it with other works to produce a work based
- on this file, this file does not by itself cause the resulting
- work to be covered by the GNU General Public License. However
- the source code for this file must still be made available in
- accordance with section (3) of the GNU General Public License.
-
- This exception does not invalidate any other reasons why a work
- based on this file might be covered by the GNU General Public
- License.
- -------------------------------------------
-####COPYRIGHTEND####*/
-#ifndef DLMSTP_H
-#define DLMSTP_H
-
-#include <stdbool.h>
-#include <stdint.h>
-#include <stddef.h>
-#include "bacdef.h"
-#include "npdu.h"
-
-/* defines specific to MS/TP */
-#define MAX_HEADER (2+1+1+1+2+1+2+1)
-#define MAX_MPDU (MAX_HEADER+MAX_PDU)
-
-typedef struct dlmstp_packet {
-    bool ready;                 /* true if ready to be sent or received */
-    BACNET_ADDRESS address;     /* source address */
-    uint8_t frame_type;         /* type of message */
-    unsigned pdu_len;           /* packet length */
-    uint8_t pdu[MAX_MPDU];      /* packet */
-} DLMSTP_PACKET;
-
-/* number of MS/TP tx/rx packets */
-extern uint16_t MSTP_Packets;
-
-#ifdef __cplusplus
-extern "C" {
-#endif                          /* __cplusplus */
-
-    void dlmstp_reinit(void);
-    void dlmstp_init(void);
-    void dlmstp_cleanup(void);
-    void dlmstp_millisecond_timer(void);
-    void dlmstp_task(void);
-
-    /* returns number of bytes sent on success, negative on failure */
-    int dlmstp_send_pdu(BACNET_ADDRESS * dest,  /* destination address */
-        BACNET_NPDU_DATA * npdu_data,   /* network information */
-        uint8_t * pdu,          /* any data to be sent - may be null */
-        unsigned pdu_len);      /* number of bytes of data */
-
-    /* This parameter represents the value of the Max_Info_Frames property of */
-    /* the node's Device object. The value of Max_Info_Frames specifies the */
-    /* maximum number of information frames the node may send before it must */
-    /* pass the token. Max_Info_Frames may have different values on different */
-    /* nodes. This may be used to allocate more or less of the available link */
-    /* bandwidth to particular nodes. If Max_Info_Frames is not writable in a */
-    /* node, its value shall be 1. */
-    void dlmstp_set_max_info_frames(uint8_t max_info_frames);
-    unsigned dlmstp_max_info_frames(void);
-
-    /* This parameter represents the value of the Max_Master property of the */
-    /* node's Device object. The value of Max_Master specifies the highest */
-    /* allowable address for master nodes. The value of Max_Master shall be */
-    /* less than or equal to 127. If Max_Master is not writable in a node, */
-    /* its value shall be 127. */
-    void dlmstp_set_max_master(uint8_t max_master);
-    uint8_t dlmstp_max_master(void);
-
-    /* MAC address for MS/TP */
-    void dlmstp_set_my_address(uint8_t my_address);
-    uint8_t dlmstp_my_address(void);
-
-    /* BACnet address used in datalink */
-    void dlmstp_get_my_address(BACNET_ADDRESS * my_address);
-    void dlmstp_get_broadcast_address(BACNET_ADDRESS * dest);   /* destination address */
-
-    /* MS/TP state machine functions */
-    uint16_t dlmstp_put_receive(uint8_t src,    /* source MS/TP address */
-        uint8_t * pdu,          /* PDU data */
-        uint16_t pdu_len);
-
-
-#ifdef __cplusplus
-}
-#endif                          /* __cplusplus */
-#endif