diff --git a/bsc/BSC_Tests.default b/bsc/BSC_Tests.default
index c13f7b0..8818359 100644
--- a/bsc/BSC_Tests.default
+++ b/bsc/BSC_Tests.default
@@ -15,6 +15,7 @@
 *.BSCVTY.CTRL_DETECT_SERVER_DISCONNECTED := "yes"
 *.BSCVTY.CTRL_READMODE := "buffered"
 *.BSCVTY.CTRL_CLIENT_CLEANUP_LINEFEED := "yes"
+*.BSCVTY.CTRL_DETECT_CONNECTION_ESTABLISHMENT_RESULT := "yes"
 *.BSCVTY.PROMPT1 := "OsmoBSC> "
 
 [MODULE_PARAMETERS]
diff --git a/bts/BTS_Tests.default b/bts/BTS_Tests.default
index 502c17f..f254993 100644
--- a/bts/BTS_Tests.default
+++ b/bts/BTS_Tests.default
@@ -12,6 +12,7 @@
 *.BTSVTY.CTRL_DETECT_SERVER_DISCONNECTED := "yes"
 *.BTSVTY.CTRL_READMODE := "buffered"
 *.BTSVTY.CTRL_CLIENT_CLEANUP_LINEFEED := "yes"
+*.BTSVTY.CTRL_DETECT_CONNECTION_ESTABLISHMENT_RESULT := "yes"
 *.BTSVTY.PROMPT1 := "OsmoBTS> "
 *.PCU.socket_type := "SEQPACKET"
 
diff --git a/ggsn_tests/GGSN_Tests.default b/ggsn_tests/GGSN_Tests.default
index ff0cd97..4d52e24 100644
--- a/ggsn_tests/GGSN_Tests.default
+++ b/ggsn_tests/GGSN_Tests.default
@@ -8,6 +8,7 @@
 *.GGSNVTY.CTRL_DETECT_SERVER_DISCONNECTED := "yes"
 *.GGSNVTY.CTRL_READMODE := "buffered"
 *.GGSNVTY.CTRL_CLIENT_CLEANUP_LINEFEED := "yes"
+*.GGSNVTY.CTRL_DETECT_CONNECTION_ESTABLISHMENT_RESULT := "yes"
 *.GGSNVTY.PROMPT1 := "OsmoGGSN> "
 
 [MODULE_PARAMETERS]
diff --git a/hlr/HLR_Tests.default b/hlr/HLR_Tests.default
index f458479..84d4ff3 100644
--- a/hlr/HLR_Tests.default
+++ b/hlr/HLR_Tests.default
@@ -9,6 +9,7 @@
 *.VTY.CTRL_DETECT_SERVER_DISCONNECTED := "yes"
 *.VTY.CTRL_READMODE := "buffered"
 *.VTY.CTRL_CLIENT_CLEANUP_LINEFEED := "yes"
+*.VTY.CTRL_DETECT_CONNECTION_ESTABLISHMENT_RESULT := "yes"
 *.VTY.PROMPT1 := "OsmoHLR> "
 
 [MODULE_PARAMETERS]
diff --git a/library/Osmocom_VTY_Functions.ttcn b/library/Osmocom_VTY_Functions.ttcn
index 6e4eb74..427bd5c 100644
--- a/library/Osmocom_VTY_Functions.ttcn
+++ b/library/Osmocom_VTY_Functions.ttcn
@@ -46,6 +46,7 @@
 	/* wait for any of the permitted prompts; buffer + return all intermediate output */
 	function f_vty_wait_for_prompt(TELNETasp_PT pt) return charstring {
 		var charstring rx, buf := "";
+		var integer fd;
 		timer T := 2.0;
 
 		T.start;
@@ -57,6 +58,14 @@
 				testcase.stop(fail, "VTY: Unknown Command");
 				};
 			[] pt.receive(charstring:?) -> value rx { buf := buf & rx; repeat };
+			[] pt.receive(integer:?) -> value fd {
+				if (fd == -1) {
+					setverdict(fail, "VTY Telnet Connection Failure");
+					mtc.stop;
+				} else {
+					repeat; /* telnet connection succeeded */
+				}
+			}
 			[] T.timeout {
 				setverdict(fail, "VTY Timeout for prompt");
 				mtc.stop;
diff --git a/msc/MSC_Tests.default b/msc/MSC_Tests.default
index bcaae06..a24fa38 100644
--- a/msc/MSC_Tests.default
+++ b/msc/MSC_Tests.default
@@ -20,6 +20,7 @@
 *.MSCVTY.CTRL_DETECT_SERVER_DISCONNECTED := "yes"
 *.MSCVTY.CTRL_READMODE := "buffered"
 *.MSCVTY.CTRL_CLIENT_CLEANUP_LINEFEED := "yes"
+*.MSCVTY.CTRL_DETECT_CONNECTION_ESTABLISHMENT_RESULT := "yes"
 *.MSCVTY.PROMPT1 := "OsmoMSC> "
 
 
diff --git a/sccp/SCCP_Tests.default b/sccp/SCCP_Tests.default
index 7d16e5b..95e0d2f 100644
--- a/sccp/SCCP_Tests.default
+++ b/sccp/SCCP_Tests.default
@@ -15,6 +15,7 @@
 *.SCCP_DEMO_USER_VTY.CTRL_DETECT_SERVER_DISCONNECTED := "yes"
 *.SCCP_DEMO_USER_VTY.CTRL_READMODE := "buffered"
 *.SCCP_DEMO_USER_VTY.CTRL_CLIENT_CLEANUP_LINEFEED := "yes"
+*.SCCP_DEMO_USER_VTY.CTRL_DETECT_CONNECTION_ESTABLISHMENT_RESULT := "yes"
 *.SCCP_DEMO_USER_VTY.PROMPT1 := "sccp-demo-user> "
 
 [MODULE_PARAMETERS]
diff --git a/sgsn/SGSN_Tests.default b/sgsn/SGSN_Tests.default
index bac5fdd..3957e82 100644
--- a/sgsn/SGSN_Tests.default
+++ b/sgsn/SGSN_Tests.default
@@ -15,6 +15,7 @@
 *.SGSNVTY.CTRL_DETECT_SERVER_DISCONNECTED := "yes"
 *.SGSNVTY.CTRL_READMODE := "buffered"
 *.SGSNVTY.CTRL_CLIENT_CLEANUP_LINEFEED := "yes"
+*.SGSNVTY.CTRL_DETECT_CONNECTION_ESTABLISHMENT_RESULT := "yes"
 *.SGSNVTY.PROMPT1 := "OsmoSGSN> "
 
 
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"