diff --git a/cmake_targets/CMakeLists.txt b/cmake_targets/CMakeLists.txt
index 9914d4abfa..f199ee0ca8 100644
--- a/cmake_targets/CMakeLists.txt
+++ b/cmake_targets/CMakeLists.txt
@@ -334,13 +334,9 @@ add_definitions("-DPACKAGE_BUGREPORT=\"openair4g-devel@lists.eurecom.fr\"")
 
 # Debug related options
 #########################################
-add_boolean_option(ASN_EMIT_DEBUG      False "ASN1 coder/decoder Debug")
-add_boolean_option(ASN_THREAD_SAFE     True "ASN1 coder/decoder Debug")
-add_boolean_option(MSG_PRINT           True "print debug messages")
+add_boolean_option(DEBUG_ASN1C      False "ASN1 coder/decoder Debug traces, see common/utils/config.h, the logs are regular OAI logs, in the log group 'ASN'")
 add_boolean_option(DISABLE_XER_PRINT   False "print XER Format")
 add_boolean_option(XER_PRINT           False "print XER Format")
-add_boolean_option(RRC_MSG_PRINT       False "print RRC messages")
-add_boolean_option(PDCP_MSG_PRINT      False "print PDCP messages to /tmp/pdcp.log")
 add_boolean_option(DEBUG_PDCP_PAYLOAD  False "print PDCP PDU to stdout")  # if true, make sure that global and PDCP log levels are trace
 add_boolean_option(DEBUG_MAC_INTERFACE False "print MAC-RLC PDU exchange to stdout") # if true, make sure that global and PDCP log levels are trace
 add_boolean_option(TRACE_RLC_PAYLOAD   False "print RLC PDU to stdout") # if true, make sure that global and PDCP log levels are trace
@@ -358,6 +354,12 @@ add_library(ITTI
   )
 add_dependencies(ITTI rrc_flag)
 
+# asn1c skeletons have hardcoded this flag to make customized debug logs
+# OAI uses this feature to re-use OAI LOG_I(ASN, ...)
+if (DEBUG_ASN1C)
+  add_definitions(-DHAVE_CONFIG_H)
+endif()
+
 ##################################################
 # ASN.1 grammar C code generation & dependencies #
 ##################################################
diff --git a/common/utils/config.h b/common/utils/config.h
new file mode 100644
index 0000000000..597ead7ed6
--- /dev/null
+++ b/common/utils/config.h
@@ -0,0 +1,56 @@
+/*
+ * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The OpenAirInterface Software Alliance licenses this file to You under
+ * the OAI Public License, Version 1.1  (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.openairinterface.org/?page_id=698
+ *
+ * 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.
+ *-------------------------------------------------------------------------------
+ * For more information about the OpenAirInterface (OAI) Software Alliance:
+ *      contact@openairinterface.org
+ */
+
+#ifndef UTILS_CONFIG_H_ASN1
+#define UTILS_CONFIG_H_ASN1
+
+// This is hard coded file name "config.h" and HAVE_CONFIG_H_ in asn1c skeletons
+
+/*
+ * This file "config.h" will be used by asn1c if HAVE_CONFIG_H_ is defined and
+ * included. This logs asn1c encoder and decoder traces at execution time using
+ * the regular OAI logging system, i.e., LOG_I(ASN...);
+ *
+ * As it is very verbose, note that you can change the log level per module in
+ * source or in gdb, e.g., to only activate it for a short time.
+ *
+ * In code:
+ * ```
+ * set_log(ASN, OAI_INFO); // enable logging
+ * // do your encoding here
+ * set_log(ASN, OAI_ERR);  // disable logging
+ * ```
+ *
+ * in gdb:
+ * ```
+ * gdb> p set_log(ASN, 1) // disable log, 1 == OAI_ERR
+ * gdb> p set_log(ASN, 5) // enable log,  5 == OAI_INFO
+ * ```
+ */
+
+#include "common/utils/LOG/log.h"
+#if DEBUG_ASN1C
+#define ASN_DEBUG(x...) do{ LOG_I(ASN,x);LOG_I(ASN,"\n"); } while(false)
+#else
+#define ASN_DEBUG(x...)
+#endif
+
+#endif /* UTILS_CONFIG_H_ASN1 */
diff --git a/openair2/F1AP/f1ap_common.c b/openair2/F1AP/f1ap_common.c
index 338b5f0c2b..efcb1d161b 100644
--- a/openair2/F1AP/f1ap_common.c
+++ b/openair2/F1AP/f1ap_common.c
@@ -35,27 +35,6 @@
 static f1ap_cudu_inst_t *f1_du_inst[NUMBER_OF_eNB_MAX]= {0};
 static f1ap_cudu_inst_t *f1_cu_inst[NUMBER_OF_eNB_MAX]= {0};
 
-#if defined(EMIT_ASN_DEBUG_EXTERN)
-int asn_debug = 0;
-int asn1_xer_print = 0;
-
-inline void ASN_DEBUG(const char *fmt, ...) {
-  if (asn_debug) {
-    int adi = asn_debug_indent;
-    va_list ap;
-    va_start(ap, fmt);
-    fprintf(stderr, "[ASN1]");
-
-    while(adi--)
-      fprintf(stderr, " ");
-
-    vfprintf(stderr, fmt, ap);
-    fprintf(stderr, "\n");
-    va_end(ap);
-  }
-}
-#endif
-
 uint8_t F1AP_get_next_transaction_identifier(instance_t enb_mod_idP, instance_t cu_mod_idP) {
   static uint8_t transaction_identifier[NUMBER_OF_eNB_MAX];
   transaction_identifier[enb_mod_idP+cu_mod_idP] =
diff --git a/openair2/F1AP/f1ap_common.h b/openair2/F1AP/f1ap_common.h
index 6b64e1b59e..e89e8a70cc 100644
--- a/openair2/F1AP/f1ap_common.h
+++ b/openair2/F1AP/f1ap_common.h
@@ -29,11 +29,6 @@
  * \note
  * \warning
  */
-
-#if HAVE_CONFIG_H_
-  #include "config.h"
-#endif
-
 #ifndef F1AP_COMMON_H_
 #define F1AP_COMMON_H_
 
@@ -43,10 +38,6 @@
 #define F1AP_UE_IDENTIFIER_NUMBER 3
 #define F1AP_TRANSACTION_IDENTIFIER_NUMBER 3
 
-#if defined(EMIT_ASN_DEBUG_EXTERN)
-  inline void ASN_DEBUG(const char *fmt, ...);
-#endif
-
 #include "F1AP_RAT-FrequencyPriorityInformation.h"
 #include "F1AP_DLUPTNLInformation-ToBeSetup-Item.h"
 #include "F1AP_PrivateMessage.h"
diff --git a/openair2/M2AP/m2ap_common.c b/openair2/M2AP/m2ap_common.c
index d288a0a114..aa090d124d 100644
--- a/openair2/M2AP/m2ap_common.c
+++ b/openair2/M2AP/m2ap_common.c
@@ -31,27 +31,6 @@
 #include "m2ap_common.h"
 #include "M2AP_M2AP-PDU.h"
 
-int asn_debug = 0;
-int asn1_xer_print = 0;
-
-#if defined(EMIT_ASN_DEBUG_EXTERN)
-inline void ASN_DEBUG(const char *fmt, ...)
-{
-  if (asn_debug) {
-    int adi = asn_debug_indent;
-    va_list ap;
-    va_start(ap, fmt);
-    fprintf(stderr, "[ASN1]");
-
-    while(adi--) fprintf(stderr, " ");
-
-    vfprintf(stderr, fmt, ap);
-    fprintf(stderr, "\n");
-    va_end(ap);
-  }
-}
-#endif
-
 ssize_t m2ap_generate_initiating_message(
   uint8_t               **buffer,
   uint32_t               *length,
diff --git a/openair2/M2AP/m2ap_common.h b/openair2/M2AP/m2ap_common.h
index 0a6895fcb7..2e84c51938 100644
--- a/openair2/M2AP/m2ap_common.h
+++ b/openair2/M2AP/m2ap_common.h
@@ -18,10 +18,8 @@
  * For more information about the OpenAirInterface (OAI) Software Alliance:
  *      contact@openairinterface.org
  */
-
-#if HAVE_CONFIG_H_
-# include "config.h"
-#endif
+#ifndef M2AP_COMMON_H_
+#define M2AP_COMMON_H_
 
 #include "M2AP_ProtocolIE-Field.h"
 #include "M2AP_M2AP-PDU.h"
@@ -38,9 +36,6 @@
 
 #include "common/ran_context.h"
 
-#ifndef M2AP_COMMON_H_
-#define M2AP_COMMON_H_
-
 /** @defgroup _m2ap_impl_ M2AP Layer Reference Implementation
  * @ingroup _ref_implementation_
  * @{
diff --git a/openair2/X2AP/x2ap_common.c b/openair2/X2AP/x2ap_common.c
index 93a8c32513..a687b90666 100644
--- a/openair2/X2AP/x2ap_common.c
+++ b/openair2/X2AP/x2ap_common.c
@@ -31,27 +31,6 @@
 #include "x2ap_common.h"
 #include "X2AP_X2AP-PDU.h"
 
-int asn_debug = 0;
-int asn1_xer_print = 0;
-
-#if defined(EMIT_ASN_DEBUG_EXTERN)
-inline void ASN_DEBUG(const char *fmt, ...)
-{
-  if (asn_debug) {
-    int adi = asn_debug_indent;
-    va_list ap;
-    va_start(ap, fmt);
-    fprintf(stderr, "[ASN1]");
-
-    while(adi--) fprintf(stderr, " ");
-
-    vfprintf(stderr, fmt, ap);
-    fprintf(stderr, "\n");
-    va_end(ap);
-  }
-}
-#endif
-
 ssize_t x2ap_generate_initiating_message(
   uint8_t               **buffer,
   uint32_t               *length,
diff --git a/openair2/X2AP/x2ap_common.h b/openair2/X2AP/x2ap_common.h
index 7dd88ffa21..e7b86c77b9 100644
--- a/openair2/X2AP/x2ap_common.h
+++ b/openair2/X2AP/x2ap_common.h
@@ -18,10 +18,8 @@
  * For more information about the OpenAirInterface (OAI) Software Alliance:
  *      contact@openairinterface.org
  */
-
-#if HAVE_CONFIG_H_
-# include "config.h"
-#endif
+#ifndef X2AP_COMMON_H_
+#define X2AP_COMMON_H_
 
 #include "X2AP_ProtocolIE-Field.h"
 #include "X2AP_X2AP-PDU.h"
@@ -35,9 +33,6 @@
 #include "X2AP_asn_constant.h"
 #include "intertask_interface.h"
 
-#ifndef X2AP_COMMON_H_
-#define X2AP_COMMON_H_
-
 /** @defgroup _x2ap_impl_ X2AP Layer Reference Implementation
  * @ingroup _ref_implementation_
  * @{
diff --git a/openair3/COMMON/security_types.h b/openair3/COMMON/security_types.h
index eb55e44d77..5494ffd994 100644
--- a/openair3/COMMON/security_types.h
+++ b/openair3/COMMON/security_types.h
@@ -18,10 +18,8 @@
  * For more information about the OpenAirInterface (OAI) Software Alliance:
  *      contact@openairinterface.org
  */
-
-#if HAVE_CONFIG_H
-# include "config.h"
-#endif
+#ifndef SECURITY_TYPES_H_
+#define SECURITY_TYPES_H_
 
 #if !defined(HAVE_UINT128_T)
 # include <gmp.h>
@@ -31,8 +29,6 @@
 #include <stdint.h>
 #include <inttypes.h>
 
-#ifndef SECURITY_TYPES_H_
-#define SECURITY_TYPES_H_
 
 #define RAND_LENGTH_BITS       (128)
 #define RAND_LENGTH_OCTETS     (RAND_LENGTH_BITS/8)
diff --git a/openair3/M3AP/m3ap_common.c b/openair3/M3AP/m3ap_common.c
index 5501997638..e43275d96c 100644
--- a/openair3/M3AP/m3ap_common.c
+++ b/openair3/M3AP/m3ap_common.c
@@ -31,27 +31,6 @@
 #include "m3ap_common.h"
 #include "M3AP_M3AP-PDU.h"
 
-int asn_debug = 0;
-int asn1_xer_print = 0;
-
-#if defined(EMIT_ASN_DEBUG_EXTERN)
-inline void ASN_DEBUG(const char *fmt, ...)
-{
-  if (asn_debug) {
-    int adi = asn_debug_indent;
-    va_list ap;
-    va_start(ap, fmt);
-    fprintf(stderr, "[ASN1]");
-
-    while(adi--) fprintf(stderr, " ");
-
-    vfprintf(stderr, fmt, ap);
-    fprintf(stderr, "\n");
-    va_end(ap);
-  }
-}
-#endif
-
 ssize_t m3ap_generate_initiating_message(
   uint8_t               **buffer,
   uint32_t               *length,
diff --git a/openair3/M3AP/m3ap_common.h b/openair3/M3AP/m3ap_common.h
index c5f55bc70a..75c60db71a 100644
--- a/openair3/M3AP/m3ap_common.h
+++ b/openair3/M3AP/m3ap_common.h
@@ -18,10 +18,8 @@
  * For more information about the OpenAirInterface (OAI) Software Alliance:
  *      contact@openairinterface.org
  */
-
-#if HAVE_CONFIG_H_
-# include "config.h"
-#endif
+#ifndef M3AP_COMMON_H_
+#define M3AP_COMMON_H_
 
 #include "M3AP_ProtocolIE-Field.h"
 #include "M3AP_M3AP-PDU.h"
@@ -35,8 +33,6 @@
 #include "M3AP_asn_constant.h"
 #include "intertask_interface.h"
 
-#ifndef M3AP_COMMON_H_
-#define M3AP_COMMON_H_
 
 /** @defgroup _m3ap_impl_ M3AP Layer Reference Implementation
  * @ingroup _ref_implementation_
diff --git a/openair3/NGAP/ngap_common.h b/openair3/NGAP/ngap_common.h
index a550b6e436..cfb9d63e59 100644
--- a/openair3/NGAP/ngap_common.h
+++ b/openair3/NGAP/ngap_common.h
@@ -33,23 +33,11 @@
  */
 
  
-#if HAVE_CONFIG_H_
-# include "config.h"
-#endif
-
 #ifndef NGAP_COMMON_H_
 #define NGAP_COMMON_H_
 
 
 #include "common/utils/LOG/log.h"
-/* replace ASN_DEBUG defined in asn_internal.h by oai tracing system
-   Would be cleaner to modify asn_internal.h but it seems to come
-   from non oai source, with BSD license, so prefer to do that here..
-*/
-#ifdef ASN_DEBUG
-# undef ASN_DEBUG
-#endif
-#define ASN_DEBUG( x... )  LOG_I(ASN, x)
 
 #include "NGAP_ProtocolIE-Field.h"
 #include "NGAP_NGAP-PDU.h"
diff --git a/openair3/S1AP/s1ap_common.h b/openair3/S1AP/s1ap_common.h
index d383b622b6..9eee0d8dff 100644
--- a/openair3/S1AP/s1ap_common.h
+++ b/openair3/S1AP/s1ap_common.h
@@ -23,24 +23,10 @@
  * @ingroup _ref_implementation_
  * @{
  */
-
-#if HAVE_CONFIG_H_
-# include "config.h"
-#endif
-
 #ifndef S1AP_COMMON_H_
 #define S1AP_COMMON_H_
 
-
 #include "common/utils/LOG/log.h"
-/* replace ASN_DEBUG defined in asn_internal.h by oai tracing system
-   Would be cleaner to modify asn_internal.h but it seems to come
-   from non oai source, with BSD license, so prefer to do that here..
-*/
-#ifdef ASN_DEBUG
-# undef ASN_DEBUG
-#endif
-#define ASN_DEBUG( x... )  LOG_I(ASN, x)
 
 #include "S1AP_ProtocolIE-Field.h"
 #include "S1AP_S1AP-PDU.h"
@@ -63,7 +49,6 @@
 
 #define S1AP_UE_ID_FMT  "0x%06"PRIX32
 
-extern int asn_debug;
 extern int asn1_xer_print;
 
 #if defined(ENB_MODE)
diff --git a/openair3/TEST/test_kdf.c b/openair3/TEST/test_kdf.c
index 50a2ad347a..7e1b623e5e 100644
--- a/openair3/TEST/test_kdf.c
+++ b/openair3/TEST/test_kdf.c
@@ -24,10 +24,6 @@
 #include <unistd.h>
 #include <string.h>
 
-#if HAVE_CONFIG_H
-# include "config.h"
-#endif
-
 #include "test_util.h"
 #include "secu_defs.h"