diff --git a/bsc/MSC_ConnectionHandler.ttcn b/bsc/MSC_ConnectionHandler.ttcn
index 32f834d..6bf3221 100644
--- a/bsc/MSC_ConnectionHandler.ttcn
+++ b/bsc/MSC_ConnectionHandler.ttcn
@@ -297,14 +297,19 @@
 
 	var MediaState g_media;
 	var TestHdlrParams g_pars;
+
+	var boolean g_vty_initialized := false;
 }
 
 /* initialize all parameters */
 function f_MscConnHdlr_init(integer i, HostName bts, HostName mgw) runs on MSC_ConnHdlr {
 	f_MediaState_init(g_media, i, bts, mgw);
-	map(self:BSCVTY, system:BSCVTY);
-	f_vty_set_prompts(BSCVTY);
-	f_vty_transceive(BSCVTY, "enable");
+	if (not g_vty_initialized) {
+		map(self:BSCVTY, system:BSCVTY);
+		f_vty_set_prompts(BSCVTY);
+		f_vty_transceive(BSCVTY, "enable");
+		g_vty_initialized := true;
+	}
 }
 
 /* Callback function from general BSSMAP_Emulation whenever a connectionless