diff --git a/tools/python/apixml2python/handwritten.mustache b/tools/python/apixml2python/handwritten.mustache
index fd25b0a72..6f826a913 100644
--- a/tools/python/apixml2python/handwritten.mustache
+++ b/tools/python/apixml2python/handwritten.mustache
@@ -79,15 +79,30 @@ static PyObject * pylinphone_module_method_set_log_handler(PyObject *self, PyObj
 	Py_RETURN_NONE;
 }
 
+static void pylinphone_Core_callback_global_state_changed(LinphoneCore *lc, LinphoneGlobalState gstate, const char *message) {
+	pylinphone_CoreObject *pylc = (pylinphone_CoreObject *)linphone_core_get_user_data(lc);
+	PyObject *func = PyDict_GetItemString(pylc->vtable_dict, "global_state_changed");
+	if ((func != NULL) && PyFunction_Check(func)) {
+		if (PyEval_CallFunction(func, "Ois", pylc, gstate, message) == NULL) {
+			PyErr_Print();
+		}
+	}
+}
+
 static PyObject * pylinphone_Core_class_method_new(PyObject *cls, PyObject *args) {
 	LinphoneCore * cresult;
 	pylinphone_CoreObject *self;
 	PyObject * pyret;
 	LinphoneCoreVTable _vtable = { 0 };
+	PyObject * _vtable_dict;
 	const char * _config_path;
 	const char * _factory_config_path;
 
-	if (!PyArg_ParseTuple(args, "zz", &_config_path, &_factory_config_path)) {
+	if (!PyArg_ParseTuple(args, "Ozz", &_vtable_dict, &_config_path, &_factory_config_path)) {
+		return NULL;
+	}
+	if (!PyDict_Check(_vtable_dict)) {
+		PyErr_SetString(PyExc_TypeError, "The first argument must be a dictionary");
 		return NULL;
 	}
 
@@ -95,6 +110,9 @@ static PyObject * pylinphone_Core_class_method_new(PyObject *cls, PyObject *args
 	if (self == NULL) {
 		return NULL;
 	}
+	Py_INCREF(_vtable_dict);
+	self->vtable_dict = _vtable_dict;
+	_vtable.global_state_changed = pylinphone_Core_callback_global_state_changed;
 
 	pylinphone_trace(1, "[PYLINPHONE] >>> %s(\"%s\", \"%s\")", __FUNCTION__, _config_path, _factory_config_path);
 	cresult = linphone_core_new(&_vtable, _config_path, _factory_config_path, self);
diff --git a/tools/python/apixml2python/linphone.py b/tools/python/apixml2python/linphone.py
index 7e3816410..561c840ec 100644
--- a/tools/python/apixml2python/linphone.py
+++ b/tools/python/apixml2python/linphone.py
@@ -578,6 +578,9 @@ class LinphoneModule(object):
 			c['class_has_user_data'] = False
 			c['class_type_methods'] = []
 			c['class_type_hand_written_methods'] = []
+			c['class_object_members'] = ''
+			if c['class_name'] == 'Core':
+				c['class_object_members'] = "\tPyObject *vtable_dict;"
 			xml_type_methods = xml_class.findall("./classmethods/classmethod")
 			for xml_type_method in xml_type_methods:
 				if xml_type_method.get('deprecated') == 'true':
diff --git a/tools/python/apixml2python/linphone_module.mustache b/tools/python/apixml2python/linphone_module.mustache
index ce222015f..3879d1194 100644
--- a/tools/python/apixml2python/linphone_module.mustache
+++ b/tools/python/apixml2python/linphone_module.mustache
@@ -42,6 +42,7 @@ static PyTypeObject pylinphone_{{class_name}}Type;
 typedef struct {
 	PyObject_HEAD
 	{{class_cname}} *native_ptr;
+{{{class_object_members}}}
 } pylinphone_{{class_name}}Object;
 
 {{/classes}}
diff --git a/tools/python/test.py b/tools/python/test.py
index d291d1f65..627f8cad9 100644
--- a/tools/python/test.py
+++ b/tools/python/test.py
@@ -1,7 +1,5 @@
 import linphone
 import logging
-import signal
-import sys
 import threading
 import time
 
@@ -36,44 +34,39 @@ logging.addLevelName(logging.DEBUG, "\033[1;37m%s\033[1;0m" % logging.getLevelNa
 logging.addLevelName(logging.INFO, "\033[1;36m%s\033[1;0m" % logging.getLevelName(logging.INFO))
 logging.addLevelName(logging.WARNING, "\033[1;31m%s\033[1;0m" % logging.getLevelName(logging.WARNING))
 logging.addLevelName(logging.ERROR, "\033[1;41m%s\033[1;0m" % logging.getLevelName(logging.ERROR))
-logging.basicConfig(level=logging.DEBUG, format="%(asctime)s.%(msecs)-3d %(levelname)s: %(message)s", datefmt="%H:%M:%S")
+logging.basicConfig(level=logging.INFO, format="%(asctime)s.%(msecs)03d %(levelname)s: %(message)s", datefmt="%H:%M:%S")
 
 # Define the linphone module log handler
 def log_handler(level, msg):
 	method = getattr(logging, level)
+	if not msg.strip().startswith('[PYLINPHONE]'):
+		msg = '[CORE] ' + msg
 	method(msg)
 
-
-def test_friend():
-	f = linphone.Friend.new()
-	print(f.address)
-	a1 = linphone.Address.new("sip:cotcot@sip.linphone.org")
-	print(a1.username)
-	print(a1.domain)
-	a1.domain = "sip2.linphone.org"
-	print(a1.domain)
-	f.address = a1
-	a2 = f.address
-
-
-def signal_handler(signal, frame):
-	cont = False
-	raise KeyError("Ctrl+C")
-
 # Define the iteration function
 def iterate(kwargs):
 	core = kwargs['core']
 	core.iterate()
 
+def interact():
+	choice = raw_input('> ')
+	if choice == "quit":
+		return False
+	return True
+
+def global_state_changed(core, state, message):
+	logging.warning("[PYTHON] global_state_changed: " + str(state) + ", " + message)
+	if state == linphone.GlobalState.GlobalOn:
+		logging.warning("[PYTHON] core version: " + str(core.version))
+
 # Create a linphone core and iterate every 20 ms
 linphone.set_log_handler(log_handler)
-core = linphone.Core.new(None, None)
+callbacks = {
+	'global_state_changed':global_state_changed
+}
+core = linphone.Core.new(callbacks, None, None)
 interval = IntervalTimer(0.02, iterate, kwargs={'core':core})
-signal.signal(signal.SIGINT, signal_handler)
-try:
-	interval.start()
-	signal.pause()
-except KeyError:
-	interval.stop()
-	del interval
-del core
+interval.start()
+while interact():
+	pass
+interval.stop()