diff --git a/library/GSM_RestOctets.ttcn b/library/GSM_RestOctets.ttcn
index 045d177..531528c 100644
--- a/library/GSM_RestOctets.ttcn
+++ b/library/GSM_RestOctets.ttcn
@@ -142,4 +142,54 @@
 	with { extension "prototype(convert) decode(RAW)" };
 
 
+/* Basic templates to be extended in place */
+template (value) SI3RestOctets ts_SI3RestOctets := {
+	sel_params := {
+		presence := CSN1_L,
+		params := omit
+	},
+	pwr_offset := {
+		presence := CSN1_L,
+		offset := omit
+	},
+	si_2ter_ind := CSN1_L,
+	early_cm_ind := CSN1_L,
+	sched_where := {
+		presence := CSN1_L,
+		where := omit
+	},
+	gprs_ind := {
+		presence := CSN1_L,
+		ind := omit
+	},
+	umts_early_cm_ind := CSN1_L,
+	si2_quater_ind := {
+		presence := CSN1_L,
+		ind := omit
+	},
+	iu_mode_ind := omit,
+	si21_ind := {
+		presence := CSN1_L,
+		pos := omit
+	}
+}
+
+template (value) SI4RestOctets ts_SI4RestOctets := {
+	sel_params := {
+		presence := CSN1_L,
+		params := omit
+	},
+	pwr_offset := {
+		presence := CSN1_L,
+		offset := omit
+	},
+	gprs_ind := {
+		presence := CSN1_L,
+		ind := omit
+	},
+	s_presence := CSN1_L,
+	s := omit
+}
+
+
 } with { encode "RAW"; variant "FIELDORDER(msb)" }