diff --git a/library/RSL_Types.ttcn b/library/RSL_Types.ttcn
index ddee44d..336b042 100644
--- a/library/RSL_Types.ttcn
+++ b/library/RSL_Types.ttcn
@@ -1357,6 +1357,21 @@
 		}
 	}
 
+	template RSL_Message ts_RSL_IPA_MDCX(RslChannelNr chan_nr,
+					     uint16_t ipa_conn_id,
+					     uint32_t remote_ip, uint16_t remote_port,
+					     uint7_t rtp_pt2) := {
+		msg_disc := ts_RSL_MsgDisc(RSL_MDISC_IPACCESS, false),
+		msg_type := RSL_MT_IPAC_MDCX,
+		ies := {
+			t_RSL_IE(RSL_IE_CHAN_NR, RSL_IE_Body:{chan_nr := chan_nr}),
+			t_RSL_IE(RSL_IE_IPAC_CONN_ID, RSL_IE_Body:{ipa_conn_id := ipa_conn_id}),
+			t_RSL_IE(RSL_IE_IPAC_REMOTE_IP, RSL_IE_Body:{ipa_remote_ip := remote_ip}),
+			t_RSL_IE(RSL_IE_IPAC_REMOTE_PORT, RSL_IE_Body:{ipa_remote_port := remote_port}),
+			/* optional: RTP Payload Type */
+			t_RSL_IE(RSL_IE_IPAC_RTP_PAYLOAD2, RSL_IE_Body:{ipa_rtp_pt2 := rtp_pt2})
+		}
+	}
 	template RSL_Message tr_RSL_IPA_MDCX(template RslChannelNr chan_nr,
 					     template uint16_t ipa_conn_id) := {
 		msg_disc := ts_RSL_MsgDisc(RSL_MDISC_IPACCESS, false),
@@ -1383,6 +1398,23 @@
 			t_RSL_IE(RSL_IE_IPAC_RTP_PAYLOAD2, RSL_IE_Body:{ipa_rtp_pt2 := rtp_pt2})
 		}
 	}
+	template RSL_Message tr_RSL_IPA_MDCX_ACK(template RslChannelNr chan_nr,
+						 template uint16_t ipa_conn_id,
+						 template uint32_t local_ip,
+						 template uint16_t local_port,
+						 template uint7_t rtp_pt2) := {
+		msg_disc := ts_RSL_MsgDisc(RSL_MDISC_IPACCESS, false),
+		msg_type := RSL_MT_IPAC_MDCX_ACK,
+		ies := {
+			tr_RSL_IE(RSL_IE_Body:{chan_nr := chan_nr}),
+			/* optional */
+			tr_RSL_IE(RSL_IE_Body:{ipa_conn_id := ipa_conn_id}),
+			tr_RSL_IE(RSL_IE_Body:{ipa_local_ip := local_ip}),
+			tr_RSL_IE(RSL_IE_Body:{ipa_local_port := local_port}),
+			/* optional: RTP Payload Type */
+			tr_RSL_IE(RSL_IE_Body:{ipa_rtp_pt2 := rtp_pt2})
+		}
+	}
 
 	template RSL_Message ts_RSL_IPA_MDCX_NACK(RslChannelNr chan_nr, RSL_Cause cause,
 						  template uint16_t ipa_conn_id) := {
@@ -1395,6 +1427,19 @@
 			t_RSL_IE(RSL_IE_CAUSE, RSL_IE_Body:{cause := ts_RSL_IE_Cause(cause)})
 		}
 	}
+	template RSL_Message tr_RSL_IPA_MDCX_NACK(template RslChannelNr chan_nr,
+						  template RSL_Cause cause,
+						  template uint16_t ipa_conn_id) := {
+		msg_disc := ts_RSL_MsgDisc(RSL_MDISC_IPACCESS, false),
+		msg_type := RSL_MT_IPAC_MDCX_NACK,
+		ies := {
+			tr_RSL_IE(RSL_IE_Body:{chan_nr := chan_nr}),
+			/* optional connection ID */
+			tr_RSL_IE(RSL_IE_Body:{ipa_conn_id := ipa_conn_id}),
+			tr_RSL_IE(RSL_IE_Body:{cause := tr_RSL_IE_Cause(cause)})
+		}
+	}
+
 
 	template RSL_Message ts_RSL_IPA_DLCX_IND(RslChannelNr chan_nr, uint16_t ipa_conn_id,
 						 RSL_IE_IPA_ConnectionStats stats, RSL_Cause cause) := {