mgw: Fix sporadic failure in TC_one_crcx_loopback_rtp

Change-Id: I29d8d376e343975e3dfeb018bdfda8350bdfc58a
---
M mgw/MGCP_Test.ttcn
1 file changed, 3 insertions(+), 0 deletions(-)

diff --git a/mgw/MGCP_Test.ttcn b/mgw/MGCP_Test.ttcn
index 36cd94c..98d63d3 100644
--- a/mgw/MGCP_Test.ttcn
+++ b/mgw/MGCP_Test.ttcn
@@ -1928,6 +1928,9 @@
 
 		f_rtpem_mode(RTPEM[0], RTPEM_MODE_BIDIR);
 		f_sleep(1.0);
+		/* Now move to RXONLY for a while to wait for in-flight packets to reach back to us: */
+		f_rtpem_mode(RTPEM[0], RTPEM_MODE_RXONLY);
+		f_sleep(1.0);
 		f_flow_delete(RTPEM[0], ep, call_id);
 
 		stats := f_rtpem_stats_get(RTPEM[0]);

