diff --git a/src/mesh/mesh_lower_transport.c b/src/mesh/mesh_lower_transport.c
index c49734b3e..24fb58e56 100644
--- a/src/mesh/mesh_lower_transport.c
+++ b/src/mesh/mesh_lower_transport.c
@@ -806,6 +806,13 @@ static void mesh_lower_transport_reset_network_pdus(btstack_linked_list_t *list)
     }
 }
 
+int  mesh_lower_transport_can_send_to_dest(uint16_t dest){
+    return 1;
+}
+
+void mesh_lower_transport_reserve_slot(void){
+}
+
 void mesh_lower_transport_dump(void){
     mesh_lower_transport_dump_network_pdus("lower_transport_incoming", &lower_transport_incoming);
 }
diff --git a/src/mesh/mesh_lower_transport.h b/src/mesh/mesh_lower_transport.h
index 8484d99a5..6d6e68766 100644
--- a/src/mesh/mesh_lower_transport.h
+++ b/src/mesh/mesh_lower_transport.h
@@ -68,6 +68,7 @@ typedef enum {
 } mesh_transport_callback_type_t;
 
 typedef enum {
+    MESH_TRANSPORT_STATUS_PARTIALLY_SEND,
     MESH_TRANSPORT_STATUS_SUCCESS,
     MESH_TRANSPORT_STATUS_SEND_FAILED,
     MESH_TRANSPORT_STATUS_SEND_ABORT_BY_REMOTE,
@@ -99,6 +100,8 @@ void mesh_lower_transport_set_higher_layer_handler(void (*pdu_handler)( mesh_tra
 
 void mesh_lower_transport_message_processed_by_higher_layer(mesh_pdu_t * pdu);
 
+int  mesh_lower_transport_can_send_to_dest(uint16_t dest);
+void mesh_lower_transport_reserve_slot(void);
 void mesh_lower_transport_send_pdu(mesh_pdu_t * pdu);
 
 // test