diff --git a/mgw/MGCP_Test.ttcn b/mgw/MGCP_Test.ttcn
index e1ebc26..9adeb2a 100644
--- a/mgw/MGCP_Test.ttcn
+++ b/mgw/MGCP_Test.ttcn
@@ -1211,6 +1211,8 @@
 
 		f_sleep(0.5);
 
+		/* Stop transmitting packets and tear down the flows */
+		f_rtpem_mode(RTPEM[2], RTPEM_MODE_NONE);
 		f_flow_delete(RTPEM[0]);
 		f_flow_delete(RTPEM[1], ep, call_id);