diff --git a/apps/aqhome-nodes/server.c b/apps/aqhome-nodes/server.c
index 11bae55..9d7f294 100644
--- a/apps/aqhome-nodes/server.c
+++ b/apps/aqhome-nodes/server.c
@@ -445,6 +445,7 @@ void _readConfig(AQH_OBJECT *o, AQH_NODE_SERVER *xo, GWEN_DB_NODE *dbArgs)
   xo->dbArgs=dbArgs;
 
   xo->timeout=GWEN_DB_GetIntValue(dbArgs, "timeout", 0, 0);
+  xo->noAttn=GWEN_DB_GetIntValue(dbArgs, "noAttn", 0, 0);
   xo->nodeAddress=GWEN_DB_GetIntValue(dbArgs, "nodeAddress", 0, AQHOMED_DEFAULT_NODEADDR);
 
   AQH_NodeServer_SetDbFile(o, GWEN_DB_GetCharValue(dbArgs, "dbfile", 0, NULL));
@@ -534,7 +535,7 @@ int _startTty(AQH_OBJECT *o, AQH_NODE_SERVER *xo)
       DBG_INFO(NULL, "here");
       return GWEN_ERROR_IO;
     }
-    xo->ttyEndpoint=AQH_TtyEndpoint2_new(AQH_Object_GetEventLoop(o), fd);
+    xo->ttyEndpoint=AQH_TtyEndpoint2_new(AQH_Object_GetEventLoop(o), fd, xo->noAttn);
     AQH_Object_AddLink(xo->ttyEndpoint, AQH_ENDPOINT_SIGNAL_CLOSED, AQH_NODE_SERVER_SLOT_TTYCLOSED, o);
     AQH_Object_Enable(xo->ttyEndpoint);
   }
@@ -1410,6 +1411,7 @@ int _readArgs(int argc, char **argv, GWEN_DB_NODE *dbArgs)
     { A_ARG, A_CHAR, "dbfile",         0,  1,  "db", "dbfile",         I18S("DB file to read/write node database"), NULL},
     { A_ARG, A_CHAR, "pidfile",        0,  1,  "p",  "pidfile",        I18S("PID file"), NULL},
     { A_ARG, A_INT,  "timeout",        0,  1,  "T",  NULL,             I18S("timeout in seconds [0]"), NULL},
+    { 0,     A_INT,  "noAttn",         0,  1,  "N",  "noattn",         I18S("Don't use ATTN line (for T03 or newer)"), NULL},
     { A_END, A_INT,  "help",           0,  0,  "h",  "help",           I18S("Show this help screen"), NULL}
   };
 
diff --git a/apps/aqhome-nodes/server_p.h b/apps/aqhome-nodes/server_p.h
index 04a7860..8b65a9a 100644
--- a/apps/aqhome-nodes/server_p.h
+++ b/apps/aqhome-nodes/server_p.h
@@ -70,6 +70,7 @@ struct AQH_NODE_SERVER {
   uint8_t protoId;
   uint8_t protoVer;
 
+  int noAttn;
 };
 
 
diff --git a/aqhome/ipc2/tty_endpoint.c b/aqhome/ipc2/tty_endpoint.c
index e67ea29..4d5c732 100644
--- a/aqhome/ipc2/tty_endpoint.c
+++ b/aqhome/ipc2/tty_endpoint.c
@@ -29,7 +29,7 @@
  * ------------------------------------------------------------------------------------------------
  */
 
-AQH_OBJECT *AQH_TtyEndpoint2_new(AQH_EVENT_LOOP *eventLoop, int fd)
+AQH_OBJECT *AQH_TtyEndpoint2_new(AQH_EVENT_LOOP *eventLoop, int fd, int noAttn)
 {
   int fdCopy;
   AQH_OBJECT *fdReader;
@@ -46,6 +46,10 @@ AQH_OBJECT *AQH_TtyEndpoint2_new(AQH_EVENT_LOOP *eventLoop, int fd)
   AQH_Object_Enable(msgReader);
 
   fdWriter=AQH_TtyObject_new(eventLoop, fdCopy, AQH_FDOBJECT_FDMODE_WRITE);
+  if (noAttn) {
+    DBG_ERROR(NULL, "Adding noAttn flag");
+    AQH_Object_AddFlags(fdWriter, AQH_TTYOBJECT_FLAGS_NOATTN);
+  }
   msgWriter=AQH_MsgWriter_new(eventLoop, fdWriter);
 
   endpoint=AQH_Endpoint_new(eventLoop, msgReader, msgWriter);
diff --git a/aqhome/ipc2/tty_endpoint.h b/aqhome/ipc2/tty_endpoint.h
index 8ae2328..db05e97 100644
--- a/aqhome/ipc2/tty_endpoint.h
+++ b/aqhome/ipc2/tty_endpoint.h
@@ -21,7 +21,7 @@
  * @param eventLoop pointer to eventLoop
  * @param fd open file descriptor for tty object (see @ref AQH_TtyObject_OpenAndInitDevice).
  */
-AQHOME_API AQH_OBJECT *AQH_TtyEndpoint2_new(AQH_EVENT_LOOP *eventLoop, int fd);
+AQHOME_API AQH_OBJECT *AQH_TtyEndpoint2_new(AQH_EVENT_LOOP *eventLoop, int fd, int noAttn);
 
 
 
diff --git a/aqhome/ipc2/tty_object.c b/aqhome/ipc2/tty_object.c
index 364a900..bde4777 100644
--- a/aqhome/ipc2/tty_object.c
+++ b/aqhome/ipc2/tty_object.c
@@ -61,24 +61,28 @@ AQH_OBJECT *AQH_TtyObject_new(AQH_EVENT_LOOP *eventLoop, int fd, int fdMode)
 int _startMsg(AQH_OBJECT *o)
 {
   if (o) {
-    int fd;
-    int rv;
-
-    fd=AQH_FdObject_GetFd(o);
-    if (fd==-1)
-      return GWEN_ERROR_IO;
-    rv=_getAttn(fd);
-    if (rv<0) {
-      DBG_INFO(AQH_LOGDOMAIN, "here (%d)", rv);
-      return rv;
-    }
-    else if (rv==0) {
-      DBG_ERROR(NULL, "Line busy");
-      return GWEN_ERROR_TRY_AGAIN;     /* line busy */
-    }
-    else {
-      _setAttn(fd, 0);                 /* set ATTN low */
+    if (AQH_Object_GetFlags(o) & AQH_TTYOBJECT_FLAGS_NOATTN)
       return 0;
+    else {
+      int fd;
+      int rv;
+  
+      fd=AQH_FdObject_GetFd(o);
+      if (fd==-1)
+        return GWEN_ERROR_IO;
+      rv=_getAttn(fd);
+      if (rv<0) {
+        DBG_INFO(AQH_LOGDOMAIN, "here (%d)", rv);
+        return rv;
+      }
+      else if (rv==0) {
+        DBG_ERROR(NULL, "Line busy");
+        return GWEN_ERROR_TRY_AGAIN;     /* line busy */
+      }
+      else {
+        _setAttn(fd, 0);                 /* set ATTN low */
+        return 0;
+      }
     }
   }
   else
@@ -90,11 +94,13 @@ int _startMsg(AQH_OBJECT *o)
 void _endMsg(AQH_OBJECT *o)
 {
   if (o) {
-    int fd;
+    if (!(AQH_Object_GetFlags(o) & AQH_TTYOBJECT_FLAGS_NOATTN)) {
+      int fd;
 
-    fd=AQH_FdObject_GetFd(o);
-    if (fd>=0) {
-      _setAttn(fd, 1);                 /* set ATTN high */
+      fd=AQH_FdObject_GetFd(o);
+      if (fd>=0) {
+        _setAttn(fd, 1);                 /* set ATTN high */
+      }
     }
   }
 }
diff --git a/aqhome/ipc2/tty_object.h b/aqhome/ipc2/tty_object.h
index 6b5eabc..2e702d1 100644
--- a/aqhome/ipc2/tty_object.h
+++ b/aqhome/ipc2/tty_object.h
@@ -14,6 +14,8 @@
 
 #include <termios.h>
 
+#define AQH_TTYOBJECT_FLAGS_NOATTN 0x0001
+
 
 /**
  * Create Tty object for given filedescriptor and in given mode (read or write)