diff --git a/bacnet-stack/demo/handler/h_dcc.c b/bacnet-stack/demo/handler/h_dcc.c
index 552748a4..ce1c2e96 100644
--- a/bacnet-stack/demo/handler/h_dcc.c
+++ b/bacnet-stack/demo/handler/h_dcc.c
@@ -67,6 +67,13 @@ void handler_dcc_password_set(
     }
 }
 
+/** Gets (non-volatile hold) the password to be used for DCC requests.
+ * @return DCC password
+ */
+char *handler_dcc_password(void)
+{
+    return My_Password;
+}
 
 /** Handler for a Device Communication Control (DCC) request.
  * @ingroup DMDCC
diff --git a/bacnet-stack/include/handlers.h b/bacnet-stack/include/handlers.h
index 095f6638..d873153e 100644
--- a/bacnet-stack/include/handlers.h
+++ b/bacnet-stack/include/handlers.h
@@ -32,6 +32,7 @@
 #include "apdu.h"
 #include "bacapp.h"
 #include "ptransfer.h"
+#include "npdu.h"
 #include "rd.h"
 #include "rp.h"
 #include "rpm.h"
@@ -57,6 +58,25 @@ extern "C" {
         uint8_t * pdu,  /* PDU data */
         uint16_t pdu_len);      /* length PDU  */
 
+    void npdu_handler_cleanup(void);
+    void npdu_handler_init(
+        uint16_t bip_net,
+        uint16_t mstp_net);
+    void npdu_router_handler(
+        uint16_t snet,
+        BACNET_ADDRESS * src,
+        uint8_t * pdu,
+        uint16_t pdu_len);
+    int npdu_router_send_pdu(
+        uint16_t dnet,
+        BACNET_ADDRESS * dest,
+        BACNET_NPDU_DATA * npdu_data,
+        uint8_t * pdu,
+        unsigned int pdu_len);
+    void npdu_router_get_my_address(
+        uint16_t dnet,
+        BACNET_ADDRESS * my_address);
+
     void routing_npdu_handler(
         BACNET_ADDRESS * src,
         int *DNET_list,
@@ -171,6 +191,7 @@ extern "C" {
         BACNET_CONFIRMED_SERVICE_DATA * service_data);
     void handler_dcc_password_set(
         char *new_password);
+    char *handler_dcc_password(void);
 
     void handler_i_have(
         uint8_t * service_request,
@@ -191,10 +212,15 @@ extern "C" {
         uint8_t * apdu,
         int max_apdu);
     void handler_timesync_task(BACNET_DATE_TIME *bdatetime);
-    void handler_timesync_init(
-        void);
+    void handler_timesync_init(void);
     bool handler_timesync_recipient_write(
         BACNET_WRITE_PROPERTY_DATA * wp_data);
+    uint32_t handler_timesync_interval(void);
+    bool handler_timesync_interval_set(uint32_t minutes);
+    uint32_t handler_timesync_interval_offset(void);
+    bool handler_timesync_interval_offset_set(uint32_t minutes);
+    bool handler_timesync_interval_align(void);
+    bool handler_timesync_interval_align_set(bool flag);
     bool handler_timesync_recipient_address_set(
         unsigned index,
         BACNET_ADDRESS * address);