diff --git a/xos/synchronizer/event_steps/onu_event.py b/xos/synchronizer/event_steps/onu_event.py
index 0db61df..bc55f16 100644
--- a/xos/synchronizer/event_steps/onu_event.py
+++ b/xos/synchronizer/event_steps/onu_event.py
@@ -30,18 +30,18 @@
     def get_att_si(self, event):
         try:
             att_si = self.model_accessor.AttWorkflowDriverServiceInstance.objects.get(
-                serial_number=event["serial_number"])
+                serial_number=event["serialNumber"])
             att_si.no_sync = False
-            att_si.uni_port_id = event["uni_port_id"]
-            att_si.of_dpid = event["of_dpid"]
+            att_si.uni_port_id = long(event["portNumber"])
+            att_si.of_dpid = event["deviceId"]
             self.log.debug("onu.events: Found existing AttWorkflowDriverServiceInstance", si=att_si)
         except IndexError:
             # create an AttWorkflowDriverServiceInstance, the validation will be
             # triggered in the corresponding sync step
             att_si = self.model_accessor.AttWorkflowDriverServiceInstance(
-                serial_number=event["serial_number"],
-                of_dpid=event["of_dpid"],
-                uni_port_id=event["uni_port_id"],
+                serial_number=event["serialNumber"],
+                of_dpid=event["deviceId"],
+                uni_port_id=long(event["portNumber"]),
                 # we assume there is only one AttWorkflowDriverService
                 owner=self.model_accessor.AttWorkflowDriverService.objects.first()
             )
diff --git a/xos/synchronizer/event_steps/test_onu_events.py b/xos/synchronizer/event_steps/test_onu_events.py
index 4543357..fe8f87e 100644
--- a/xos/synchronizer/event_steps/test_onu_events.py
+++ b/xos/synchronizer/event_steps/test_onu_events.py
@@ -60,9 +60,9 @@
         self.event = Mock()
         self.event_dict = {
             'status': 'activated',
-            'serial_number': 'BRCM1234',
-            'of_dpid': 'of:109299321',
-            'uni_port_id': 16
+            'serialNumber': 'BRCM1234',
+            'deviceId': 'of:109299321',
+            'portNumber': '16'
         }
         self.event.value = json.dumps(self.event_dict)
 
@@ -86,15 +86,15 @@
 
             self.assertEqual(mock_save.call_count, 1)
 
-            self.assertEqual(att_si.serial_number, self.event_dict['serial_number'])
-            self.assertEqual(att_si.of_dpid, self.event_dict['of_dpid'])
-            self.assertEqual(att_si.uni_port_id, self.event_dict['uni_port_id'])
+            self.assertEqual(att_si.serial_number, self.event_dict['serialNumber'])
+            self.assertEqual(att_si.of_dpid, self.event_dict['deviceId'])
+            self.assertEqual(att_si.uni_port_id, long(self.event_dict['portNumber']))
             self.assertEqual(att_si.onu_state, "ENABLED")
 
     def test_reuse_instance(self):
 
         si = AttWorkflowDriverServiceInstance(
-            serial_number=self.event_dict["serial_number"],
+            serial_number=self.event_dict["serialNumber"],
             of_dpid="foo",
             uni_port_id="foo"
         )
@@ -110,17 +110,17 @@
 
             self.assertEqual(mock_save.call_count, 1)
 
-            self.assertEqual(att_si.serial_number, self.event_dict['serial_number'])
-            self.assertEqual(att_si.of_dpid, self.event_dict['of_dpid'])
-            self.assertEqual(att_si.uni_port_id, self.event_dict['uni_port_id'])
+            self.assertEqual(att_si.serial_number, self.event_dict['serialNumber'])
+            self.assertEqual(att_si.of_dpid, self.event_dict['deviceId'])
+            self.assertEqual(att_si.uni_port_id, long(self.event_dict['portNumber']))
             self.assertEqual(att_si.onu_state, "ENABLED")
 
     def test_disable_onu(self):
         self.event_dict = {
             'status': 'disabled',
-            'serial_number': 'BRCM1234',
-            'of_dpid': 'of:109299321',
-            'uni_port_id': 16
+            'serialNumber': 'BRCM1234',
+            'deviceId': 'of:109299321',
+            'portNumber': '16'
         }
         self.event.value = json.dumps(self.event_dict)