diff --git a/cmake_targets/CMakeLists.txt b/cmake_targets/CMakeLists.txt
index eea548774a6a936d7fe3e41ccef0d992597f6ce7..5c682a1a521836f40ea1d029412af6a18dfe54d5 100644
--- a/cmake_targets/CMakeLists.txt
+++ b/cmake_targets/CMakeLists.txt
@@ -1173,6 +1173,7 @@ set(libnas_ies_OBJS
   ${NAS_SRC}COMMON/IES/MobileStationClassmark2.c
   ${NAS_SRC}COMMON/IES/MobileStationClassmark3.c
   ${NAS_SRC}COMMON/IES/MsNetworkCapability.c
+  ${NAS_SRC}COMMON/IES/MsNetworkFeatureSupport.c
   ${NAS_SRC}COMMON/IES/NasKeySetIdentifier.c
   ${NAS_SRC}COMMON/IES/NasMessageContainer.c
   ${NAS_SRC}COMMON/IES/NasRequestType.c
diff --git a/openair-cn/NAS/COMMON/EMM/MSG/AttachRequest.c b/openair-cn/NAS/COMMON/EMM/MSG/AttachRequest.c
index 15a29b1f29f92ccf9b2d3d275a20d3ced52b5bdd..f301b44a863c46a98abd9e46f9d186a81d85930f 100644
--- a/openair-cn/NAS/COMMON/EMM/MSG/AttachRequest.c
+++ b/openair-cn/NAS/COMMON/EMM/MSG/AttachRequest.c
@@ -217,8 +217,9 @@ int decode_attach_request(attach_request_msg *attach_request, uint8_t *buffer, u
     case ATTACH_REQUEST_SUPPORTED_CODECS_IEI:
       if ((decoded_result =
              decode_supported_codec_list(&attach_request->supportedcodecs,
-                                         ATTACH_REQUEST_SUPPORTED_CODECS_IEI, buffer + decoded, len
-                                         - decoded)) <= 0) {
+                                         ATTACH_REQUEST_SUPPORTED_CODECS_IEI, 
+					 buffer + decoded, 
+					 len   - decoded)) <= 0) {
         //         return decoded_result;
         LOG_FUNC_RETURN(decoded_result);
       }
@@ -270,12 +271,26 @@ int decode_attach_request(attach_request_msg *attach_request, uint8_t *buffer, u
       attach_request->presencemask |= ATTACH_REQUEST_VOICE_DOMAIN_PREFERENCE_AND_UE_USAGE_SETTING_PRESENT;
       break;
 
-
+    case ATTACH_REQUEST_MS_NETWORK_FEATURE_SUPPORT_IEI: 
+      if ((decoded_result =
+	   decode_ms_network_feature_support(&attach_request->msnetworkfeaturesupport,
+					     ATTACH_REQUEST_MS_NETWORK_FEATURE_SUPPORT_IEI,
+					     buffer + decoded, len - decoded)) <= 0) {
+        //         return decoded_result;
+	LOG_FUNC_RETURN(decoded_result);
+      }
+      
+      decoded += decoded_result;
+      /* Set corresponding mask to 1 in presencemask */
+      attach_request->presencemask |= ATTACH_REQUEST_MS_NETWORK_FEATURE_SUPPORT_PRESENT;
+      break;
     default:
+     
       errorCodeDecoder = TLV_DECODE_UNEXPECTED_IEI;
       {
         //                     return TLV_DECODE_UNEXPECTED_IEI;
-        LOG_FUNC_RETURN(TLV_DECODE_UNEXPECTED_IEI);
+        LOG_TRACE(INFO,"EMM: Can't decode the message with iei %d\n",ieiDecoded);
+	LOG_FUNC_RETURN(TLV_DECODE_UNEXPECTED_IEI);
       }
     }
   }
@@ -469,6 +484,19 @@ int encode_attach_request(attach_request_msg *attach_request, uint8_t *buffer, u
       encoded += encode_result;
   }
 
+  if ((attach_request->presencemask & ATTACH_REQUEST_MS_NETWORK_FEATURE_SUPPORT_PRESENT)
+      == ATTACH_REQUEST_MS_NETWORK_FEATURE_SUPPORT_PRESENT) {
+    if ((encode_result =
+	 encode_ms_network_feature_support(&attach_request->msnetworkfeaturesupport,
+					   ATTACH_REQUEST_MS_NETWORK_FEATURE_SUPPORT_IEI, 
+					   buffer + encoded, 
+					   len -  encoded)) < 0)
+      // Return in case of error
+      return encode_result;
+    else
+      encoded += encode_result;
+  }
+  
   return encoded;
 }
 
diff --git a/openair-cn/NAS/COMMON/EMM/MSG/AttachRequest.h b/openair-cn/NAS/COMMON/EMM/MSG/AttachRequest.h
index 5368df7fc77d22b138623416994299be3557c3fa..f19c53f1adc51422fb05b431d45156e4240517f3 100644
--- a/openair-cn/NAS/COMMON/EMM/MSG/AttachRequest.h
+++ b/openair-cn/NAS/COMMON/EMM/MSG/AttachRequest.h
@@ -42,6 +42,7 @@
 #include "TrackingAreaIdentity.h"
 #include "DrxParameter.h"
 #include "MsNetworkCapability.h"
+#include "MsNetworkFeatureSupport.h"
 #include "LocationAreaIdentification.h"
 #include "TmsiStatus.h"
 #include "MobileStationClassmark2.h"
@@ -74,6 +75,7 @@
     TRACKING_AREA_IDENTITY_MAXIMUM_LENGTH + \
     DRX_PARAMETER_MAXIMUM_LENGTH + \
     MS_NETWORK_CAPABILITY_MAXIMUM_LENGTH + \
+    MS_NETWORK_FEATURE_SUPPORT_MAXIMUM_LENGTH +	  \
     LOCATION_AREA_IDENTIFICATION_MAXIMUM_LENGTH + \
     TMSI_STATUS_MAXIMUM_LENGTH + \
     MOBILE_STATION_CLASSMARK_2_MAXIMUM_LENGTH + \
@@ -98,12 +100,14 @@
 # define ATTACH_REQUEST_ADDITIONAL_UPDATE_TYPE_PRESENT                        (1<<10)
 # define ATTACH_REQUEST_OLD_GUTI_TYPE_PRESENT                                 (1<<11)
 # define ATTACH_REQUEST_VOICE_DOMAIN_PREFERENCE_AND_UE_USAGE_SETTING_PRESENT  (1<<12)
+# define ATTACH_REQUEST_MS_NETWORK_FEATURE_SUPPORT_PRESENT                    (1<<13)
 
 typedef enum attach_request_iei_tag {
   ATTACH_REQUEST_OLD_PTMSI_SIGNATURE_IEI                          = 0x19, /* 0x19 = 25  */
   ATTACH_REQUEST_ADDITIONAL_GUTI_IEI                              = 0x50, /* 0x50 = 80  */
   ATTACH_REQUEST_LAST_VISITED_REGISTERED_TAI_IEI                  = 0x52, /* 0x52 = 82  */
   ATTACH_REQUEST_DRX_PARAMETER_IEI                                = 0x5C, /* 0x5C = 92  */
+  ATTACH_REQUEST_MS_NETWORK_FEATURE_SUPPORT_IEI                   = 0xC0, /* 0xC- = 192-  */
   ATTACH_REQUEST_MS_NETWORK_CAPABILITY_IEI                        = 0x31, /* 0x31 = 49  */
   ATTACH_REQUEST_OLD_LOCATION_AREA_IDENTIFICATION_IEI             = 0x13, /* 0x13 = 19  */
   ATTACH_REQUEST_TMSI_STATUS_IEI                                  = 0x90, /* 0x90 = 144 */
@@ -147,6 +151,7 @@ typedef struct attach_request_msg_tag {
   AdditionalUpdateType                    additionalupdatetype;
   GutiType                                oldgutitype;
   VoiceDomainPreferenceAndUeUsageSetting  voicedomainpreferenceandueusagesetting;
+  MsNetworkFeatureSupport                 msnetworkfeaturesupport;
 } attach_request_msg;
 
 int decode_attach_request(attach_request_msg *attachrequest, uint8_t *buffer, uint32_t len);
diff --git a/openair-cn/NAS/COMMON/IES/MsNetworkFeatureSupport.c b/openair-cn/NAS/COMMON/IES/MsNetworkFeatureSupport.c
new file mode 100644
index 0000000000000000000000000000000000000000..e05968c2d57fcbcbf4e598486f8b419b97774511
--- /dev/null
+++ b/openair-cn/NAS/COMMON/IES/MsNetworkFeatureSupport.c
@@ -0,0 +1,85 @@
+/*******************************************************************************
+    OpenAirInterface
+    Copyright(c) 1999 - 2014 Eurecom
+
+    OpenAirInterface is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+
+    OpenAirInterface is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with OpenAirInterface.The full GNU General Public License is
+   included in this distribution in the file called "COPYING". If not,
+   see <http://www.gnu.org/licenses/>.
+
+  Contact Information
+  OpenAirInterface Admin: openair_admin@eurecom.fr
+  OpenAirInterface Tech : openair_tech@eurecom.fr
+  OpenAirInterface Dev  : openair4g-devel@eurecom.fr
+
+  Address      : Eurecom, Compus SophiaTech 450, route des chappes, 06451 Biot, France.
+
+ *******************************************************************************/
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+
+
+#include "TLVEncoder.h"
+#include "TLVDecoder.h"
+#include "MsNetworkFeatureSupport.h"
+
+int decode_ms_network_feature_support(MsNetworkFeatureSupport *msnetworkfeaturesupport, uint8_t iei, uint8_t *buffer, uint32_t len)
+{
+  int decoded = 0;
+ 
+  
+  if (iei > 0) {
+    CHECK_IEI_DECODER(iei, (*buffer & 0xc0));
+  }
+  msnetworkfeaturesupport->spare_bits= (*(buffer + decoded) >> 3) & 0x7;
+  msnetworkfeaturesupport->extended_periodic_timers= *(buffer + decoded) & 0x1;
+  decoded++;
+  
+#if defined (NAS_DEBUG)
+  dump_ms_network_feature_support_xml(msnetworkfeaturesupport, iei);
+#endif
+  return decoded;
+}
+int encode_ms_network_feature_support(MsNetworkFeatureSupport *msnetworkfeaturesupport, uint8_t iei, uint8_t *buffer, uint32_t len)
+{
+  uint8_t *lenPtr;
+  uint32_t encoded = 0;
+  int encode_result;
+  /* Checking IEI and pointer */
+  CHECK_PDU_POINTER_AND_LENGTH_ENCODER(buffer, MS_NETWORK_FEATURE_SUPPORT_MINIMUM_LENGTH, len);
+#if defined (NAS_DEBUG)
+  dump_ms_network_feature_support_xml(msnetworkfeaturesupport, iei);
+#endif
+
+  
+  *(buffer + encoded) = 0x00 | ((msnetworkfeaturesupport->spare_bits & 0x7) << 3)  
+                             | (msnetworkfeaturesupport->extended_periodic_timers & 0x1);
+  encoded++;
+  return encoded;
+}
+
+void dump_ms_network_feature_support_xml(MsNetworkFeatureSupport *msnetworkfeaturesupport, uint8_t iei)
+{
+  printf("<Ms Network Feature Support>\n");
+
+  if (iei > 0)
+    /* Don't display IEI if = 0 */
+    printf("    <IEI>0x%X</IEI>\n", iei);
+  
+  printf("    <spare_bits>%u<spare_bits>\n",msnetworkfeaturesupport->spare_bits);
+  printf("    <extended_periodic_timer>%u<extended_periodic_timer>\n",msnetworkfeaturesupport->extended_periodic_timers);
+  printf("</Ms Network Feature Support>\n");
+}
+
diff --git a/openair-cn/NAS/COMMON/IES/MsNetworkFeatureSupport.h b/openair-cn/NAS/COMMON/IES/MsNetworkFeatureSupport.h
new file mode 100644
index 0000000000000000000000000000000000000000..334430de1a0498132186f04a0c54cdb65e955403
--- /dev/null
+++ b/openair-cn/NAS/COMMON/IES/MsNetworkFeatureSupport.h
@@ -0,0 +1,53 @@
+/*******************************************************************************
+    OpenAirInterface
+    Copyright(c) 1999 - 2014 Eurecom
+
+    OpenAirInterface is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+
+    OpenAirInterface is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with OpenAirInterface.The full GNU General Public License is
+   included in this distribution in the file called "COPYING". If not,
+   see <http://www.gnu.org/licenses/>.
+
+  Contact Information
+  OpenAirInterface Admin: openair_admin@eurecom.fr
+  OpenAirInterface Tech : openair_tech@eurecom.fr
+  OpenAirInterface Dev  : openair4g-devel@eurecom.fr
+
+  Address      : Eurecom, Compus SophiaTech 450, route des chappes, 06451 Biot, France.
+
+ *******************************************************************************/
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+
+#include "OctetString.h"
+
+#ifndef MS_NETWORK_FEATURE_SUPPORT_H_
+#define MS_NETWORK_FEATURE_SUPPORT_H_
+
+#define MS_NETWORK_FEATURE_SUPPORT_MINIMUM_LENGTH 3
+#define MS_NETWORK_FEATURE_SUPPORT_MAXIMUM_LENGTH 10
+
+typedef struct MsNetworkFeatureSupport_tag {
+  uint8_t spare_bits:3;
+  uint8_t extended_periodic_timers:1;
+} MsNetworkFeatureSupport;
+
+int encode_ms_network_feature_support(MsNetworkFeatureSupport *msnetworkfeaturesupport, uint8_t iei, uint8_t *buffer, uint32_t len);
+
+int decode_ms_network_feature_support(MsNetworkFeatureSupport *msnetworkfeaturesupport, uint8_t iei, uint8_t *buffer, uint32_t len);
+
+void dump_ms_network_feature_support_xml(MsNetworkFeatureSupport *msnetworkfeaturesupport, uint8_t iei);
+
+#endif /* MS NETWORK CAPABILITY_H_ */
+
diff --git a/openair-cn/NAS/COMMON/UTIL/TLVDecoder.h b/openair-cn/NAS/COMMON/UTIL/TLVDecoder.h
index 6e1764edadc257f268bd8337717157d67ea9e3f8..152fd9c7374b680e8448ace3b69cbe9078811395 100644
--- a/openair-cn/NAS/COMMON/UTIL/TLVDecoder.h
+++ b/openair-cn/NAS/COMMON/UTIL/TLVDecoder.h
@@ -132,7 +132,7 @@ void tlv_decode_perror(void);
         if(iEI != bUFFER)                                               \
         {                                                               \
                 printf("IEI is different than the one expected."        \
-                "(Got: 0x%x, expecting: 0x%x\n", bUFFER, iEI);          \
+                "(Got: 0x%x, expecting: 0x%x)\n", bUFFER, iEI);          \
                 errorCodeDecoder = TLV_DECODE_UNEXPECTED_IEI;           \
                 LOG_FUNC_RETURN(TLV_DECODE_UNEXPECTED_IEI);             \
         }