diff --git a/library/GSM_RR_Types.ttcn b/library/GSM_RR_Types.ttcn
index 4bd65d1..ec9b3cc 100644
--- a/library/GSM_RR_Types.ttcn
+++ b/library/GSM_RR_Types.ttcn
@@ -1036,4 +1036,36 @@
 		}
 	};
 
+	template GsmRrMessage tr_IMM_ASS_REJ(template FeatureIndicator feature_ind := ?,
+					     template ReqRefWaitInd4 rr_wi_list := ?,
+					     template IARRestOctets rest_octets := ?) := {
+		header := t_RrHeader(IMMEDIATE_ASSIGNMENT_REJECT, ?),
+		payload := {
+			imm_ass_rej := {
+				feature_ind := feature_ind,
+				page_mode := ?,
+				payload := rr_wi_list,
+				rest_octets := rest_octets
+			}
+		}
+	};
+
+	template ReqRefWaitInd tr_ReqRefWaitInd(template RequestReference ref := ?,
+						template WaitIndication wi := ?) := {
+		req_ref := ref,
+		wait_ind := wi
+	};
+
+	template IARRestOctets tr_IARRestOctets(template ExtRAList ext_ra_list := ?,
+						template uint3_t rcc := ?) := {
+		ext_ra_list := ext_ra_list,
+		rel13_ind := ?,
+		rcc := rcc ifpresent
+	};
+
+	template ExtRAOpt tr_ExtRAOpt(template BIT5 ext_ra := ?) := {
+		presence := '1'B, // L/H
+		ext_ra := ext_ra
+	};
+
 } with { encode "RAW" ; variant "FIELDORDER(msb)" }