diff --git a/msc/MSC_Tests.ttcn b/msc/MSC_Tests.ttcn
index a18b9b0..161744c 100644
--- a/msc/MSC_Tests.ttcn
+++ b/msc/MSC_Tests.ttcn
@@ -133,7 +133,7 @@
 private altstep as_Tguard_direct() runs on MTC_CT {
 	[] Tguard_direct.timeout {
 		setverdict(fail, "Tguard timeout");
-		self.stop;
+		mtc.stop;
 	}
 }
 
@@ -213,7 +213,7 @@
 		[] GSUP_IPA_EVENT.receive(t_ASP_IPA_EVT_UD(ASP_IPA_EVENT_UP)) { }
 		[] T.timeout {
 			setverdict(fail, "No connection to GSUP Port");
-			self.stop
+			mtc.stop
 		}
 	}
 }
@@ -226,7 +226,7 @@
 	g_initialized := true;
 
 	if (num_bsc > NUM_BSC) {
-		setverdict(fail, "excess number of BSC instances requested");
+		testcase.stop("excess number of BSC instances requested");
 	}
 
 	for (var integer i := 0; i < num_bsc; i := i + 1) {
@@ -234,7 +234,7 @@
 			f_bssap_init(g_bssap[i], mp_bssap_cfg[i], "MSC_Test_" & int2str(i), BSC_BssmapOps);
 			f_bssap_start(g_bssap[i]);
 		} else {
-			setverdict(fail, "missing BSSAP configuration");
+			testcase.stop("missing BSSAP configuration");
 		}
 	}
 
@@ -529,7 +529,7 @@
 			}
 		[] BSSAP.receive(tr_PDU_DTAP_MT(tr_ML3_MT_LU_Acc)) {
 			setverdict(fail, "Expecting LU REJ, but got ACCEPT");
-			self.stop;
+			mtc.stop;
 		}
 	}
 	f_expect_clear();
@@ -558,7 +558,7 @@
 			}
 		[] BSSAP.receive(tr_PDU_DTAP_MT(tr_ML3_MT_LU_Acc)) {
 			setverdict(fail, "Expecting LU REJ, but got ACCEPT");
-			self.stop;
+			mtc.stop;
 		}
 	}
 	f_expect_clear();
@@ -605,11 +605,18 @@
 	alt {
 	[] BSSAP.receive(tr_PDU_DTAP_MT(tr_CM_SERV_REJ)) { }
 	//[] BSSAP.receive(tr_PDU_DTAP_MT(tr_CM_SERV_ACC)) { }
-	[] BSSAP.receive { setverdict(fail, "Received unexpected BSSAP"); }
+	[] BSSAP.receive {
+		setverdict(fail, "Received unexpected BSSAP");
+		mtc.stop;
+		}
 	[] GSUP.receive(tr_GSUP_UL_REQ(g_pars.imsi)) {
 		setverdict(fail, "Unexpected GSUP UL REQ");
+		mtc.stop;
 		}
-	[] T.timeout { setverdict(fail, "Timeout waiting for CM SERV REQ"); }
+	[] T.timeout {
+		setverdict(fail, "Timeout waiting for CM SERV REQ");
+		mtc.stop;
+		}
 	}
 
 	f_expect_clear();
@@ -730,6 +737,7 @@
 	/* See https://osmocom.org/issues/2862 */
 	[] BSSAP.receive(tr_BSSMAP_ClearCommand) {
 			setverdict(fail, "Got a second Clear Command, only one expected");
+			mtc.stop;
 			repeat;
 		}
 	[] BSSAP.receive(BSSAP_Conn_Prim:MSC_CONN_PRIM_DISC_IND) {}
@@ -840,6 +848,7 @@
 		}
 	[] BSSAP.receive(tr_PDU_DTAP_MT(tr_ML3_MT_LU_Rej)) {
 		setverdict(fail, "Expected LU ACK, but received REJ");
+		mtc.stop;
 		}
 	}
 
@@ -1127,7 +1136,7 @@
 	[] as_clear_cmd_compl_disc();
 	[] T.timeout {
 		setverdict(fail, "Timeout waiting for ClearCommand or SCCP Release");
-		self.stop;
+		mtc.stop;
 		}
 	}
 	setverdict(pass);
@@ -1161,7 +1170,7 @@
 	[] as_clear_cmd_compl_disc();
 	[] T.timeout {
 		setverdict(fail, "Timeout waiting for ClearCommand or SCCP Release");
-		self.stop;
+		mtc.stop;
 		}
 	}
 	setverdict(pass);
@@ -1305,7 +1314,10 @@
 	timer T := 30.0;
 	T.start;
 	alt {
-	[] T.timeout { setverdict(fail, "Timeout waiting for channel release"); self.stop; }
+	[] T.timeout {
+		setverdict(fail, "Timeout waiting for channel release");
+		mtc.stop;
+		}
 	[] BSSAP.receive(tr_PDU_DTAP_MT(tr_ML3_MT_CC_RELEASE(cpars.transaction_id))) {
 		BSSAP.send(ts_PDU_DTAP_MO(ts_ML3_MO_CC_REL_COMPL(cpars.transaction_id)));
 		repeat;
@@ -1317,7 +1329,10 @@
 	 * the current implementation, there is no recovery mechanism implemented
 	 * and a DLCX can not be performed as the MSC does not know a specific
 	 * endpoint yet. */
-	[] MGCP.receive { setverdict(fail, "Unexpected MGCP message"); self.stop; }
+	[] MGCP.receive {
+		setverdict(fail, "Unexpected MGCP message");
+		mtc.stop;
+		}
 	[] as_clear_cmd_compl_disc();
 	}
 }
@@ -1405,7 +1420,10 @@
 	timer T := 30.0;
 	T.start;
 	alt {
-	[] T.timeout { setverdict(fail, "Timeout waiting for channel release"); self.stop; }
+	[] T.timeout {
+		setverdict(fail, "Timeout waiting for channel release");
+		mtc.stop;
+		}
 	[] BSSAP.receive { repeat; }
 	[] MNCC.receive { repeat; }
 	[] GSUP.receive { repeat; }
@@ -1449,7 +1467,10 @@
 	timer T := 190.0;
 	T.start;
 	alt {
-	[] T.timeout { setverdict(fail, "Timeout waiting for T310"); self.stop; }
+	[] T.timeout {
+		setverdict(fail, "Timeout waiting for T310");
+		mtc.stop;
+		}
 	[] MNCC.receive(tr_MNCC_DISC_ind(cpars.mncc_callref)) {
 		MNCC.send(ts_MNCC_REL_req(cpars.mncc_callref, valueof(ts_MNCC_cause(23))));
 		}
@@ -1496,7 +1517,7 @@
 	[] GSUP.receive(tr_GSUP_CL_RES(g_pars.imsi)) { }
 	[] GSUP.receive(tr_GSUP_CL_ERR(g_pars.imsi)) {
 		setverdict(fail, "Received GSUP Location Cancel Error");
-		self.stop;
+		mtc.stop;
 		}
 	}
 
@@ -1508,7 +1529,7 @@
 	[] BSSAP.receive(tr_PDU_DTAP_MT(tr_CM_SERV_REJ)) { }
 	[] BSSAP.receive {
 		setverdict(fail, "Received unexpected BSSAP instead of CM SERV REJ");
-		self.stop;
+		mtc.stop;
 		}
 	}
 	setverdict(pass);
@@ -1581,11 +1602,11 @@
 		}
 	[] BSSAP.receive(tr_BSSMAP_CipherModeCmd(?,?)) {
 		setverdict(fail, "CipherModeCommand despite no A5 intersection");
-		self.stop;
+		mtc.stop;
 		}
 	[] BSSAP.receive {
 		setverdict(fail, "Unknown/unexpected BSSAP received");
-		self.stop;
+		mtc.stop;
 		}
 	}
 	setverdict(pass);
@@ -1648,11 +1669,11 @@
 		}
 	[] BSSAP.receive(tr_BSSMAP_CipherModeCmd(?,?)) {
 		setverdict(fail, "CipherModeCommand despite no A5 intersection");
-		self.stop;
+		mtc.stop;
 		}
 	[] BSSAP.receive {
 		setverdict(fail, "Unknown/unexpected BSSAP received");
-		self.stop;
+		mtc.stop;
 		}
 	}
 	setverdict(pass);
@@ -1764,6 +1785,7 @@
 	[reset_ack_seen == true] T.timeout { setverdict(pass) }
 	[reset_ack_seen == false] T.timeout {
 		setverdict(fail, "no BSSMAP RESET ACK seen!");
+		mtc.stop;
 	}
 	}	
 }
@@ -1999,7 +2021,7 @@
 	case ('110'B) { return abbreviated; }
 	}
 	setverdict(fail, "Unknown TON ", ton);
-	self.stop;
+	mtc.stop;
 }
 /* convert GSM L3 NPI to SMPP_NPI enum */
 function f_sm_npi_from_gsm(BIT4 npi) return SMPP_NPI {
@@ -2014,7 +2036,7 @@
 	case ('1010'B) { return ermes; }
 	}
 	setverdict(fail, "Unknown NPI ", npi);
-	self.stop;
+	mtc.stop;
 }
 
 /* build a SMPP_SM from SmsParameters */
@@ -2154,7 +2176,7 @@
 		}
 	[] BSSAP.receive {
 		setverdict(fail, "Unknown/unexpected BSSAP received");
-		self.stop;
+		mtc.stop;
 		}
 	}
 
@@ -2217,7 +2239,7 @@
 		}
 	[] BSSAP.receive {
 		setverdict(fail, "Unknown/unexpected BSSAP received");
-		self.stop;
+		mtc.stop;
 		}
 	}