diff --git a/sip/SIP_Tests.default b/sip/SIP_Tests.default
index 2576b33..4434a1a 100644
--- a/sip/SIP_Tests.default
+++ b/sip/SIP_Tests.default
@@ -13,6 +13,7 @@
 *.SIPVTY.CTRL_DETECT_SERVER_DISCONNECTED := "yes"
 *.SIPVTY.CTRL_READMODE := "buffered"
 *.SIPVTY.CTRL_CLIENT_CLEANUP_LINEFEED := "yes"
+*.SIPVTY.CTRL_DETECT_CONNECTION_ESTABLISHMENT_RESULT := "yes"
 *.SIPVTY.PROMPT1 := "OsmoSIPcon> "
 
 *.SIP.local_sip_port := "5060"