Index: leahi_dialin/common/msg_ids.py
===================================================================
diff -u -r923a6cf4205ed94ae793899f3d3d2dd26b87a8f5 -r62972f33f3d84041e8d8e68a274e5f2a4cd67568
--- leahi_dialin/common/msg_ids.py	(.../msg_ids.py)	(revision 923a6cf4205ed94ae793899f3d3d2dd26b87a8f5)
+++ leahi_dialin/common/msg_ids.py	(.../msg_ids.py)	(revision 62972f33f3d84041e8d8e68a274e5f2a4cd67568)
@@ -191,6 +191,7 @@
     MSG_ID_TD_AIR_PUMP_POWER_RAISE_OVERRIDE_REQUEST = 0x803D
     MSG_ID_TD_AIR_PUMP_POWER_LOWER_OVERRIDE_REQUEST = 0x803E
     MSG_ID_TD_HARD_STOP_BLOOD_PUMP = 0x803F
+    MSG_ID_TD_TRAINING_TEST_OVERRIDE_REQUEST = 0x8999
 
     MSG_ID_DD_TESTER_LOGIN_REQUEST = 0xA000
     MSG_ID_DD_SOFTWARE_RESET_REQUEST = 0xA001
Index: leahi_dialin/protocols/CAN.py
===================================================================
diff -u -r7a7ebdcdb8f20614bd9702dc3dbb9756e576acc6 -r62972f33f3d84041e8d8e68a274e5f2a4cd67568
--- leahi_dialin/protocols/CAN.py	(.../CAN.py)	(revision 7a7ebdcdb8f20614bd9702dc3dbb9756e576acc6)
+++ leahi_dialin/protocols/CAN.py	(.../CAN.py)	(revision 62972f33f3d84041e8d8e68a274e5f2a4cd67568)
@@ -393,9 +393,9 @@
     td_to_ui_ch_id = 0x040
     ui_to_td_ch_id = 0x041
     td_sync_broadcast_ch_id = 0x100
-    dd_sync_broadcast_ch_id = 0x101
+    dd_sync_broadcast_ch_id = 0x101         # Also acts as the dd_to_ui_ch_id
     fp_sync_broadcast_ch_id = 0x102
-    ui_sync_broadcast_ch_id = 0x103
+    ui_sync_broadcast_ch_id = 0x103         # Also acts as the ui_to_dd_ch_id
     dialin_to_td_ch_id = 0x400
     td_to_dialin_ch_id = 0x401
     dialin_to_dd_ch_id = 0x402
@@ -700,7 +700,6 @@
         """
         if channel_id in {
             DenaliChannels.ui_to_td_ch_id,
-            # DenaliChannels.ui_to_dd_ch_id,
             DenaliChannels.ui_to_dialin_ch_id,
             DenaliChannels.ui_sync_broadcast_ch_id,
             DenaliChannels.ui_alarm_broadcast_ch_id