diff --git a/bsc/MSC_ConnectionHandler.ttcn b/bsc/MSC_ConnectionHandler.ttcn
index c2b49c8..e492ee0 100644
--- a/bsc/MSC_ConnectionHandler.ttcn
+++ b/bsc/MSC_ConnectionHandler.ttcn
@@ -669,7 +669,8 @@
 	OCT3		last_used_eutran_plmn optional,
 	boolean		exp_fast_return, /* RR Release expected to contain CellSelectInd ? */
 	boolean		expect_channel_mode_modify,
-	uint3_t		expect_tsc optional
+	uint3_t		expect_tsc optional,
+	BSSMAP_IE_CellIdentifier	cell_id_source
 };
 
 /* Note: Do not use valueof() to get a value of this template, use
@@ -708,7 +709,8 @@
 	last_used_eutran_plmn := omit,
 	exp_fast_return := false,
 	expect_channel_mode_modify := false,
-	expect_tsc := omit
+	expect_tsc := omit,
+	cell_id_source := valueof(ts_CellID_LAC_CI(1, 1))
 }
 
 function f_create_chan_and_exp(template (present) PDU_BSSAP exp_l3_compl := ?)