diff --git a/bridge_master.py b/bridge_master.py
index d432baf..61438c1 100644
--- a/bridge_master.py
+++ b/bridge_master.py
@@ -2367,7 +2367,7 @@ class routerHBP(HBSYSTEM):
         #Handle AMI
         if _call_type == 'unit' and not _data_call and _slot == 1:
             
-            self.STATUS[_slot]['TX_TIME'] = self.STATUS[_slot]['TX_TIME'] - 10
+            self.STATUS[_slot]['TX_TIME'] = self.STATUS[_slot]['TX_TIME'] + 10
             
             if (_stream_id != self.STATUS[_slot]['RX_STREAM_ID']):                
                 if _int_dst_id == 4000: