diff --git a/src/s11/handlers/s11_DDN_handler.c b/src/s11/handlers/s11_DDN_handler.c
new file mode 100644
index 0000000..ac10f67
--- /dev/null
+++ b/src/s11/handlers/s11_DDN_handler.c
@@ -0,0 +1,83 @@
+/*
+ * Copyright (c) 2019, Infosys Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <arpa/inet.h>
+#include <unistd.h>
+#include <string.h>
+#include <pthread.h>
+
+#include "err_codes.h"
+#include "options.h"
+#include "ipc_api.h"
+#include "message_queues.h"
+#include "s11.h"
+#include "s11_config.h"
+#include "msgType.h"
+//#include "detach_stage2_info.h"
+#include "../../gtpV2Codec/gtpV2StackWrappers.h"
+/*Globals and externs*/
+extern int g_resp_fd;
+extern struct GtpV2Stack* gtpStack_gp;
+/*End : globals and externs*/
+
+
+int
+s11_DDN_handler(MsgBuffer* message, GtpV2MessageHeader* hdr)
+{
+
+
+	struct gtp_incoming_msg_data_t ddn_info;
+	ddn_info.msg_type = downlink_data_notification;
+	ddn_info.ue_idx = hdr->teid;
+	ddn_info.msg_data.ddn_Q_msg_m.seq_no = hdr->sequenceNumber;
+
+
+	DownlinkDataNotificationMsgData msgData;
+	memset(&msgData, 0, sizeof(DownlinkDataNotificationMsgData));
+
+	bool rc = GtpV2Stack_decodeMessage(gtpStack_gp, hdr, message, &msgData);
+	if(rc == false)
+	{
+			
+			log_msg(LOG_ERROR, "s11_Ddn_handler: "
+					   "Failed to decode ddn Msg %d\n",
+								hdr->teid);
+			return E_PARSING_FAILED;
+	}
+	/*****Message structure****/
+	log_msg(LOG_INFO, "Parse S11 Ddn message\n");
+
+	//TODO : check cause for the result verification
+
+	ddn_info.msg_data.ddn_Q_msg_m.arp.prioLevel = msgData.allocationRetentionPriority.pl;
+	ddn_info.msg_data.ddn_Q_msg_m.arp.preEmptionCapab = msgData.allocationRetentionPriority.pci;
+	ddn_info.msg_data.ddn_Q_msg_m.arp.preEmptionVulnebility = msgData.allocationRetentionPriority.pvi;
+	ddn_info.msg_data.ddn_Q_msg_m.cause = msgData.cause.causeValue;
+	ddn_info.msg_data.ddn_Q_msg_m.eps_bearer_id = msgData.epsBearerId.epsBearerId;
+
+	ddn_info.destInstAddr = htonl(mmeAppInstanceNum_c);
+	ddn_info.srcInstAddr = htonl(s11AppInstanceNum_c);
+
+	/*Send DDN msg*/
+	send_tipc_message(g_resp_fd, mmeAppInstanceNum_c, (char *)&ddn_info, GTP_READ_MSG_BUF_SIZE);
+
+	log_msg(LOG_INFO, "Send ddn to mme-app\n");
+	
+
+	return SUCCESS;
+}