diff --git a/library/Osmocom_Gb_Types.ttcn b/library/Osmocom_Gb_Types.ttcn
index b83131d..518d619 100644
--- a/library/Osmocom_Gb_Types.ttcn
+++ b/library/Osmocom_Gb_Types.ttcn
@@ -733,6 +733,11 @@
 		CellIdentity			cell_id
 	} with { variant "" };
 
+	template (value) BssgpCellId ts_BssgpCellId(template (value) RoutingAreaIdentification rai, CellIdentity cell_id) := {
+		ra_id := rai,
+		cell_id := cell_id
+	};
+
 	type enumerated BssgpCause {
 		BSSGP_CAUSE_PROC_OVERLOAD			('00'H),
 		BSSGP_CAUSE_EQUIMENT_FAILURE			('01'H),