diff --git a/README.md b/README.md
index 9c114ae..7257ba6 100644
--- a/README.md
+++ b/README.md
@@ -252,4 +252,18 @@ gst-launch-1.0 \
   rtpopusdepay ! \
   opusdec plc=true use-inband-fec=false ! \
   pulsesink
+
+# both sides with echo cancellation
+export TARGET=192.168.1.1 
+gst-launch-1.0 \
+  pulsesrc ! \
+    audioconvert ! \
+    opusenc audio-type=voice inband-fec=false frame-size=20 ! \
+    rtpopuspay ! \
+    udpsink host=$TARGET port=5000 \
+  udpsrc port=5000 caps="application/x-rtp" ! \
+    rtpjitterbuffer do-lost=true do-retransmission=false ! \
+    rtpopusdepay ! \
+    opusdec plc=true use-inband-fec=false ! \
+    pulsesink
 ```