diff --git a/remsim/RSPRO_Server.ttcn b/remsim/RSPRO_Server.ttcn
index 5c9051c..25ec4d1 100644
--- a/remsim/RSPRO_Server.ttcn
+++ b/remsim/RSPRO_Server.ttcn
@@ -34,8 +34,15 @@
 type component rspro_server_CT {
 	var RSPRO_Server	g_rspro_srv[NUM_SERVER];
 	port IPA_RSPRO_PT	RSPRO_SRV[NUM_SERVER];
+	timer			g_rspro_srv_Tguard := 30.0;
 };
 
+private altstep as_rspro_srv_Tguard() runs on rspro_server_CT {
+[] g_rspro_srv_Tguard.timeout {
+	setverdict(fail, "RSPRO Server global guard timer timeout");
+	mtc.stop;
+	}
+}
 
 altstep as_ignore_id_ack(integer i) runs on rspro_server_CT {
 	[] RSPRO_SRV[i].receive(ASP_IPA_Event:{up_down := ASP_IPA_EVENT_ID_ACK}) { repeat; }
@@ -66,6 +73,9 @@
 	g_rspro_srv[i].ccm_pars.name := "Osmocom TTCN-3 RSPRO server simulator";
 	g_rspro_srv[i].rspro_id := rspro_id;
 
+	activate(as_rspro_srv_Tguard());
+	g_rspro_srv_Tguard.start;
+
 	map(g_rspro_srv[i].vc_IPA:IPA_PORT, system:IPA_CODEC_PT);
 	connect(g_rspro_srv[i].vc_IPA:IPA_RSPRO_PORT, self:RSPRO_SRV[i]);