diff --git a/include/osmocom/mgcp/mgcp_common.h b/include/osmocom/mgcp/mgcp_common.h
index 07d8d37..7de45f9 100644
--- a/include/osmocom/mgcp/mgcp_common.h
+++ b/include/osmocom/mgcp/mgcp_common.h
@@ -47,6 +47,7 @@
 	MGCP_CONN_SEND_ONLY = 2,
 	MGCP_CONN_RECV_SEND = MGCP_CONN_RECV_ONLY | MGCP_CONN_SEND_ONLY,
 	MGCP_CONN_LOOPBACK  = 4 | MGCP_CONN_RECV_SEND,
+	MGCP_CONN_CONFECHO  = 8 | MGCP_CONN_RECV_SEND,
 };
 
 #define MGCP_X_OSMO_IGN_HEADER "X-Osmo-IGN:"