diff --git a/examples/osmo-pcu.cfg b/examples/osmo-pcu.cfg
index b88e6e7b..909a833a 100644
--- a/examples/osmo-pcu.cfg
+++ b/examples/osmo-pcu.cfg
@@ -4,3 +4,7 @@ pcu
  alloc-algorithm dynamic
  alpha 0
  gamma 0
+ ! Keep the DL TBF open for 2s
+ dl-tbf-idle-time 2000
+ ! Poll the MS for ack 100ms after the last DL LLC frame
+ queue idle-ack-delay 10