diff --git a/apps/ivr/IvrDialogBase.cpp b/apps/ivr/IvrDialogBase.cpp
index 41d391e7..1ba4eaf3 100644
--- a/apps/ivr/IvrDialogBase.cpp
+++ b/apps/ivr/IvrDialogBase.cpp
@@ -68,30 +68,44 @@ IvrDialogBase_dealloc(IvrDialogBase* self)
 //
 static PyObject* IvrDialogBase_onSessionStart(IvrDialogBase* self, PyObject*)
 {
+    DBG("no script implementation for onSessionStart(self,hdrs) !!!\n");
+
     PyErr_SetNone(PyExc_NotImplementedError);
     return NULL; // no return value
 }
 
 static PyObject* IvrDialogBase_onBye(IvrDialogBase* self, PyObject*)
 {
+    DBG("no script implementation for onBye(self) !!!\n");
+
     PyErr_SetNone(PyExc_NotImplementedError);
     return NULL; // no return value
 }
 
 static PyObject* IvrDialogBase_onEmptyQueue(IvrDialogBase* self, PyObject*)
 {
+    DBG("no script implementation for onEmptyQueue(self) !!!\n");
+
     PyErr_SetNone(PyExc_NotImplementedError);
     return NULL; // no return value
 }
 
 static PyObject* IvrDialogBase_onDtmf(IvrDialogBase* self, PyObject* args)
 {
-    PyErr_SetNone(PyExc_NotImplementedError);
-    return NULL; // no return value
+    int key, duration;
+    if(!PyArg_ParseTuple(args,"ii",&key,&duration))
+	return NULL;
+
+    DBG("IvrDialogBase_onDtmf(%i,%i)\n",key,duration);
+
+    Py_INCREF(Py_None);
+    return Py_None;
 }
 
 static PyObject* IvrDialogBase_onTimer(IvrDialogBase* self, PyObject* args)
 {
+    DBG("IvrDialog::onTimer: no script implementation!!!\n");
+
     PyErr_SetNone(PyExc_NotImplementedError);
     return NULL; // no return value
 }
@@ -352,7 +366,7 @@ IvrDialogBase_getdialog(IvrDialogBase *self, void *closure)
 static PyMethodDef IvrDialogBase_methods[] = {
     
     // Event handlers
-    {"onSessionStart", (PyCFunction)IvrDialogBase_onSessionStart, METH_NOARGS,
+    {"onSessionStart", (PyCFunction)IvrDialogBase_onSessionStart, METH_VARARGS,
      "Gets called on session start"
     },
     {"onBye", (PyCFunction)IvrDialogBase_onBye, METH_NOARGS,