diff --git a/app/consapp/rtkrcv/rtkrcv.c b/app/consapp/rtkrcv/rtkrcv.c
index d640f5cc6..5b4637ccb 100644
--- a/app/consapp/rtkrcv/rtkrcv.c
+++ b/app/consapp/rtkrcv/rtkrcv.c
@@ -1407,6 +1407,7 @@ static void *con_thread(void *arg)
         }
     }
     vt_close(con->vt);
+    con->vt = NULL;
     return 0;
 }
 /* open console --------------------------------------------------------------*/
@@ -1418,9 +1419,16 @@ static con_t *con_open(int sock, const char *dev)
     
     if (!(con=(con_t *)malloc(sizeof(con_t)))) return NULL;
     
-    if (!(con->vt=vt_open(sock,dev))) {
-        free(con);
-        return NULL;
+    if ( sock == 0 ) {
+        if (!(con->vt=vt_open_stdout())) {
+            free(con);
+            return NULL;
+        }
+    } else {
+        if (!(con->vt=vt_open(sock,dev))) {
+            free(con);
+            return NULL;
+        }
     }
     /* start console thread */
     con->state=1;
@@ -1436,7 +1444,10 @@ static void con_close(con_t *con)
     trace(3,"con_close:\n");
     
     if (!con) return;
-    con->state=con->vt->state=0;
+    con->state=0;
+    if ( con->vt ) {
+        con->vt->state = 0;
+    }
     pthread_join(con->thread,NULL);
     free(con);
 }
diff --git a/app/consapp/rtkrcv/vt.c b/app/consapp/rtkrcv/vt.c
index 9d397294f..a5e4df0a3 100644
--- a/app/consapp/rtkrcv/vt.c
+++ b/app/consapp/rtkrcv/vt.c
@@ -50,6 +50,39 @@
 #define C_DONT      (char)254           /* telnet option negotiation */
 #define C_IAC       (char)255           /* telnet interpret as command */
 
+/* open virtual console on stdout --------------------------------------------
+* open virtual console
+* args   : 
+* return : virtual console (NULL: error)
+*-----------------------------------------------------------------------------*/
+extern vt_t *vt_open_stdout()
+{
+    vt_t *vt;
+    int i;
+    struct termios tio={0};
+    
+    trace(3,"vt_open_stdout\n");
+    
+    if (!(vt=(vt_t *)malloc(sizeof(vt_t)))) {
+        return NULL;
+    }
+    /* set terminal mode echo-off */
+    vt->in=fileno(stdin);
+    vt->out=fileno(stdout);
+    tcgetattr(vt->in,&vt->tio);
+    tcsetattr(vt->in,TCSANOW,&tio);
+
+    vt->n=vt->nesc=vt->cur=vt->cur_h=vt->brk=vt->blind=0;
+    vt->logfp=NULL;
+    for (i=0;i<MAXHIST;i++) {
+        vt->hist[i]=NULL;
+    }
+    vt->type=VT_TYPE_STDOUT;
+    
+    vt->state=1;
+    return vt;
+}
+
 /* open virtual console --------------------------------------------------------
 * open virtual console
 * args   : vt_t   *vt       I   virtual console
@@ -69,7 +102,8 @@ extern vt_t *vt_open(int sock, const char *dev)
     if (!(vt=(vt_t *)malloc(sizeof(vt_t)))) {
         return NULL;
     }
-    vt->type=vt->n=vt->nesc=vt->cur=vt->cur_h=vt->brk=vt->blind=0;
+    vt->type=VT_TYPE_DEV;
+    vt->n=vt->nesc=vt->cur=vt->cur_h=vt->brk=vt->blind=0;
     vt->logfp=NULL;
     for (i=0;i<MAXHIST;i++) {
         vt->hist[i]=NULL;
@@ -84,7 +118,7 @@ extern vt_t *vt_open(int sock, const char *dev)
         tcsetattr(vt->in,TCSANOW,&tio);
     }
     else {
-        vt->type=1;
+        vt->type=VT_TYPE_TELNET;
         vt->in=vt->out=sock;
         
         /* send telnet character mode */
@@ -106,12 +140,20 @@ extern void vt_close(vt_t *vt)
     int i;
     
     trace(3,"vt_close:\n");
-    
-    /* restore terminal mode */
-    if (!vt->type) {
-        tcsetattr(vt->in,TCSANOW,&vt->tio);
+    switch ( vt->type ) {
+        case VT_TYPE_DEV:
+            tcsetattr(vt->in,TCSANOW,&vt->tio);
+            close(vt->in);
+            break;
+        case VT_TYPE_TELNET:
+            close(vt->in);
+            break;
+        default:
+        case VT_TYPE_STDOUT:
+            tcsetattr(vt->in,TCSANOW,&vt->tio);
+            break;
+
     }
-    close(vt->in);
     if (vt->logfp) fclose(vt->logfp);
     for (i=0;i<MAXHIST;i++) {
         free(vt->hist[i]);
@@ -273,7 +315,7 @@ extern int vt_getc(vt_t *vt, char *c)
     if (!(stat=select(vt->in+1,&rs,NULL,NULL,&tv))) return 1; /* no data */
     if (stat<0||read(vt->in,c,1)!=1) return 0; /* error */
     
-    if ((vt->type&&*c==C_IAC)||*c==C_ESC) { /* escape or telnet */
+    if (( (vt->type==VT_TYPE_TELNET)&&*c==C_IAC)||*c==C_ESC) { /* escape or telnet */
         vt->esc[0]=*c; *c='\0';
         vt->nesc=1;
     }
diff --git a/app/consapp/rtkrcv/vt.h b/app/consapp/rtkrcv/vt.h
index c7bf15b70..4756565f3 100644
--- a/app/consapp/rtkrcv/vt.h
+++ b/app/consapp/rtkrcv/vt.h
@@ -15,9 +15,15 @@
 #define MAXHIST     256                 /* size of history buffer */
 
 /* type definitions ----------------------------------------------------------*/
+typedef enum {
+    VT_TYPE_DEV = 0,
+    VT_TYPE_TELNET = 1,
+    VT_TYPE_STDOUT = 2
+} vt_type_t;
+
 typedef struct vt_tag {                 /* virtual console type */
     int state;                          /* state(0:close,1:open) */
-    int type;                           /* type (0:dev,1:telnet) */
+    vt_type_t type;                     /* type (0:dev,1:telnet,2:stdout) */
     int in,out;                         /* input/output file descriptor */
     int n,nesc;                         /* number of line buffer/escape */
     int cur;                            /* cursor position */
@@ -33,6 +39,7 @@ typedef struct vt_tag {                 /* virtual console type */
 
 /* function prototypes -------------------------------------------------------*/
 extern vt_t *vt_open(int sock, const char *dev);
+extern vt_t *vt_open_stdout();
 extern void vt_close(vt_t *vt);
 extern int vt_getc(vt_t *vt, char *c);
 extern int vt_gets(vt_t *vt, char *buff, int n);