MSC_Tests: Add CC sequence no. test with DTMF

Change-Id: I9674343acc18187b9e016bd8e0be470d5424046f
diff --git a/library/L3_Templates.ttcn b/library/L3_Templates.ttcn
index cfbf96b..b506865 100644
--- a/library/L3_Templates.ttcn
+++ b/library/L3_Templates.ttcn
@@ -882,6 +882,30 @@
 	}
 }
 
+template (value) PDU_ML3_MS_NW ts_ML3_MO_CC_START_DTMF(integer tid, charstring number) := {
+	discriminator := '0011'B,
+	tiOrSkip := {
+		transactionId := {
+			tio := int2bit(tid, 3),
+			tiFlag := '0'B,
+			tIExtension := omit
+		}
+	},
+	msgs := {
+		cc := {
+			startDTMF := {
+				messageType := '110101'B,
+				nsd := '00'B,
+				keypadFacility := {
+					elementIdentifier := '2C'O,
+					keypadInformation := int2bit(char2int(number), 7),
+					spare_1 := '0'B
+				}
+			}
+		}
+	}
+}
+
 template PDU_ML3_NW_MS tr_ML3_MT_CC_DISC(integer tid) := {
 	discriminator := '0011'B,
 	tiOrSkip := {