diff --git a/msc/BSC_ConnectionHandler.ttcn b/msc/BSC_ConnectionHandler.ttcn
index 4351e06..3d7dc07 100644
--- a/msc/BSC_ConnectionHandler.ttcn
+++ b/msc/BSC_ConnectionHandler.ttcn
@@ -375,7 +375,8 @@
 	EST_TYPE_EMERG_CALL,
 	EST_TYPE_PAG_RESP,
 	EST_TYPE_MO_SMS,
-	EST_TYPE_SS_ACT
+	EST_TYPE_SS_ACT,
+	EST_TYPE_MO_CSD
 };
 
 /* helper function to fully establish a dedicated channel */
@@ -395,6 +396,9 @@
 	case (EST_TYPE_MO_CALL) {
 		l3_info := valueof(ts_CM_SERV_REQ(CM_TYPE_MO_CALL, mi));
 		}
+	case (EST_TYPE_MO_CSD) {
+		l3_info := valueof(ts_CM_SERV_REQ(CM_TYPE_MO_CALL, mi));
+		}
 	case (EST_TYPE_EMERG_CALL) {
 		l3_info := valueof(ts_CM_SERV_REQ(CM_TYPE_EMERG_CALL, mi));
 		}
@@ -951,6 +955,7 @@
 							   important to set the TI flag properly */
 	BearerCapability_TLV bearer_cap,		/* which bearer capabilities to claim */
 	boolean emergency,				/* is this an emergency call? */
+	boolean csd,					/* is this a circuit switched data call? */
 
 	/* MNCC related parameters */
 	uint32_t mncc_callref optional,			/* call reference on the MNCC side */
@@ -1538,6 +1543,8 @@
 
 	if (cpars.emergency) {
 		f_establish_fully(EST_TYPE_EMERG_CALL);
+	} else if (cpars.csd) {
+		f_establish_fully(EST_TYPE_MO_CSD);
 	} else {
 		f_establish_fully(EST_TYPE_MO_CALL);
 	}
@@ -1548,6 +1555,8 @@
 
 	if (cpars.emergency) {
 		BSSAP.send(ts_PDU_DTAP_MO(ts_ML3_MO_CC_EMERG_SETUP(cpars.transaction_id)));
+	} if (cpars.csd) {
+		BSSAP.send(ts_PDU_DTAP_MO(ts_ML3_MO_CC_SETUP(cpars.transaction_id, cpars.called_party, ts_Bcap_csd)));
 	} else {
 		BSSAP.send(ts_PDU_DTAP_MO(ts_ML3_MO_CC_SETUP(cpars.transaction_id, cpars.called_party)));
 	}