diff --git a/sccp/SCCP_CodecPort.ttcn b/sccp/SCCP_CodecPort.ttcn
new file mode 100644
index 0000000..838517a
--- /dev/null
+++ b/sccp/SCCP_CodecPort.ttcn
@@ -0,0 +1,73 @@
+module SCCP_CodecPort {
+
+/* Simple SCCP Codec Port, translating between raw MTP3 primitives with
+ * octetstring payload towards the MTP3 provider, and MTP3-SCCP primitives
+ * which carry the decoded SCCP data types as payload.
+ *
+ * (C) 2019 by Harald Welte <laforge@gnumonks.org>
+ * All rights reserved.
+ *
+ * Released under the terms of GNU General Public License, Version 2 or
+ * (at your option) any later version.
+ */
+
+import from General_Types all;
+import from Osmocom_Types all;
+
+import from MTP3asp_Types all;
+import from MTP3asp_PortType all;
+import from SCCP_Types all;
+
+/* MTP3asp_Types.Types.MessageTypes.ASP_MTP3_TRANSFERind with PDU_SCCP instead of octetstring */
+type record SCCP_MTP3_TRANSFERind {
+	MTP3_Field_sio	sio,
+	integer		opc,
+	integer		dpc,
+	integer		sls,
+	PDU_SCCP	data
+};
+
+/* MTP3asp_Types.Types.MessageTypes.ASP_MTP3_TRANSFERreq with PDU_SCCP instead of octetstring */
+type record SCCP_MTP3_TRANSFERreq {
+	MTP3_Field_sio	sio,
+	integer		opc,
+	integer		dpc,
+	integer		sls,
+	PDU_SCCP	data
+};
+
+private function f_dec_TRANSFERind(in ASP_MTP3_TRANSFERind pin, out SCCP_MTP3_TRANSFERind pout) {
+	pout.sio := pin.sio;
+	pout.opc := pin.opc;
+	pout.dpc := pin.dpc;
+	pout.sls := pin.sls;
+	pout.data := dec_PDU_SCCP(pin.data);
+	//port.setstate(0);
+} with {extension "prototype(fast)" }
+
+
+private function f_enc_TRANSFERreq(in SCCP_MTP3_TRANSFERreq pin, out ASP_MTP3_TRANSFERreq pout) {
+	pout.sio := pin.sio;
+	pout.opc := pin.opc;
+	pout.dpc := pin.dpc;
+	pout.sls := pin.sls;
+	pout.data := enc_PDU_SCCP(pin.data);
+	//port.setstate(0);
+} with {extension "prototype(fast)" }
+
+type port SCCP_CODEC_PT message {
+	out	SCCP_MTP3_TRANSFERreq;
+	in	SCCP_MTP3_TRANSFERind,
+		ASP_MTP3_PAUSE,
+		ASP_MTP3_RESUME,
+		ASP_MTP3_STATUS;
+} with { extension "internal user MTP3asp_PT
+	out(SCCP_MTP3_TRANSFERreq -> ASP_MTP3_TRANSFERreq: function(f_enc_TRANSFERreq))
+	in(ASP_MTP3_TRANSFERind -> SCCP_MTP3_TRANSFERind: function(f_dec_TRANSFERind);
+	   ASP_MTP3_PAUSE -> ASP_MTP3_PAUSE: simple;
+	   ASP_MTP3_RESUME -> ASP_MTP3_RESUME: simple;
+	   ASP_MTP3_STATUS -> ASP_MTP3_STATUS: simple)"
+}
+
+
+}