mme: initial skeleton for MME / SGsAP tetss

Change-Id: Idbd54838daaf12acccc3253dc4278de75eaaaf31
diff --git a/library/SGsAP_Emulation.ttcn b/library/SGsAP_Emulation.ttcn
index f91e076..6cd1052 100644
--- a/library/SGsAP_Emulation.ttcn
+++ b/library/SGsAP_Emulation.ttcn
@@ -47,6 +47,12 @@
 	inout PDU_SGsAP, PDU_ML3_MS_NW, PDU_ML3_NW_MS;
 } with { extension "internal" };
 
+/* global test port e.g. for non-imsi/conn specific messages */
+type port SGsAP_PT message {
+	inout PDU_SGsAP;
+} with { extension "internal" };
+
+
 /* represents a single SGsAP Association */
 type record AssociationData {
 	SGsAP_ConnHdlr	comp_ref,
@@ -66,6 +72,8 @@
 	var ExpectData SgsapExpectTable[8];
 	/* procedure based port to register for incoming connections */
 	port SGsAPEM_PROC_PT SGsAP_PROC;
+	/* test port for unit data messages */
+	port SGsAP_PT SGsAP_UNIT;
 
 	var charstring g_sgsap_id;
 	var integer g_sgsap_conn_id := -1;