diff --git a/bsc-nat/BSC_MS_Simulation.ttcn b/bsc-nat/BSC_MS_Simulation.ttcn
index eab7fe9..b9414a3 100644
--- a/bsc-nat/BSC_MS_Simulation.ttcn
+++ b/bsc-nat/BSC_MS_Simulation.ttcn
@@ -8,6 +8,7 @@
 import from SCCPasp_Types all;
 import from SCCP_Emulation all;
 
+import from BSSAP_CodecPort all;
 import from BSSMAP_Emulation all;
 
 import from BSC_MS_ConnectionHandler all;
@@ -53,7 +54,7 @@
 	connect(vc_IPA:MTP3_SP_PORT, vc_SCCP:MTP3_SCCP_PORT);
 
 	/* connect BSSMAP dispatcher to upper side of SCCP */
-	connect(vc_BSSMAP:SCCP, vc_SCCP:SCCP_SP_PORT);
+	connect(vc_BSSMAP:BSSAP, vc_SCCP:SCCP_SP_PORT);
 
 	/* connect BSSMAP dispatcher to IPA_Emulation MGCP */
 	connect(vc_BSSMAP:MGCP, vc_IPA:IPA_MGCP_PORT);