diff --git a/kannel_meta/gw/smsc/smpp_pdu.c b/kannel_meta/gw/smsc/smpp_pdu.c

index 2a46e88..87924b6 100644

--- a/kannel_meta/gw/smsc/smpp_pdu.c

+++ b/kannel_meta/gw/smsc/smpp_pdu.c

@@ -582,6 +582,12 @@ err:

 void smpp_pdu_dump(SMPP_PDU *pdu)

 {

+

+	  // No need enquire_link debug info

+    if(pdu->type == 0x80000015) {

+        return;

+    }

+

     debug("sms.smpp", 0, "SMPP PDU %p dump:", (void *) pdu);

     debug("sms.smpp", 0, "  type_name: %s", pdu->type_name);

     switch (pdu->type) {

diff --git a/kannel_meta/gw/smsc/smsc_smpp.c b/kannel_meta/gw/smsc/smsc_smpp.c

index e4a0e73..1fc3f07 100644

--- a/kannel_meta/gw/smsc/smsc_smpp.c

+++ b/kannel_meta/gw/smsc/smsc_smpp.c

@@ -955,7 +955,7 @@ static void send_enquire_link(SMPP *smpp, Connection *conn, long *last_sent)

     *last_sent = date_universal_now();

     pdu = smpp_pdu_create(enquire_link, counter_increase(smpp->message_id_counter));

-    dump_pdu("Sending enquire link:", smpp->conn->id, pdu);

+    // dump_pdu("Sending enquire link:", smpp->conn->id, pdu);

     os = smpp_pdu_pack(pdu);

     if (os)

 	conn_write(conn, os); /* Write errors checked by caller. */

@@ -1813,7 +1813,10 @@ static void io_thread(void *arg)

             while ((ret = read_pdu(smpp, conn, &len, &pdu)) == 1) {

                 last_response = time(NULL);

                 /* Deal with the PDU we just got */

-                dump_pdu("Got PDU:", smpp->conn->id, pdu);

+                // dump_pdu("Got PDU:", smpp->conn->id, pdu);

+                if(pdu->type != 0x80000015){

+                    dump_pdu("Got PDU:", smpp->conn->id, pdu);

+                }

                 handle_pdu(smpp, conn, pdu, &pending_submits);

                 smpp_pdu_destroy(pdu);