diff --git a/openair2/RRC/NR_UE/rrc_UE.c b/openair2/RRC/NR_UE/rrc_UE.c
index ecbaeea17e..9f47cf7640 100644
--- a/openair2/RRC/NR_UE/rrc_UE.c
+++ b/openair2/RRC/NR_UE/rrc_UE.c
@@ -1286,10 +1286,38 @@ nr_rrc_ue_process_masterCellGroup(
     xer_fprint(stdout, &asn_DEF_NR_CellGroupConfig, (const void *) cellGroupConfig);
   }
 
-  if( cellGroupConfig->spCellConfig != NULL &&  cellGroupConfig->spCellConfig->reconfigurationWithSync != NULL){
-    //TODO (perform Reconfiguration with sync according to 5.3.5.5.2)
-    //TODO (resume all suspended radio bearers and resume SCG transmission for all radio bearers, if suspended)
-    // NSA procedures
+  // TS 38.331 - Section 5.3.5.5.2 Reconfiguration with sync
+  if (cellGroupConfig->spCellConfig != NULL && cellGroupConfig->spCellConfig->reconfigurationWithSync != NULL) {
+
+    LOG_A(NR_RRC, "Received the reconfigurationWithSync in %s\n", __FUNCTION__);
+
+    NR_ReconfigurationWithSync_t *reconfigurationWithSync = cellGroupConfig->spCellConfig->reconfigurationWithSync;
+    NR_UE_rrc_inst[ctxt_pP->module_id].Info[gNB_index].T304_active = 1;
+    switch (reconfigurationWithSync->t304) {
+      case NR_ReconfigurationWithSync__t304_ms100:
+        NR_UE_rrc_inst[ctxt_pP->module_id].Info[gNB_index].T304_cnt = 100;
+        break;
+      case NR_ReconfigurationWithSync__t304_ms150:
+        NR_UE_rrc_inst[ctxt_pP->module_id].Info[gNB_index].T304_cnt = 150;
+        break;
+      case NR_ReconfigurationWithSync__t304_ms200:
+        NR_UE_rrc_inst[ctxt_pP->module_id].Info[gNB_index].T304_cnt = 200;
+        break;
+      case NR_ReconfigurationWithSync__t304_ms500:
+        NR_UE_rrc_inst[ctxt_pP->module_id].Info[gNB_index].T304_cnt = 500;
+        break;
+      case NR_ReconfigurationWithSync__t304_ms1000:
+        NR_UE_rrc_inst[ctxt_pP->module_id].Info[gNB_index].T304_cnt = 1000;
+        break;
+      case NR_ReconfigurationWithSync__t304_ms2000:
+        NR_UE_rrc_inst[ctxt_pP->module_id].Info[gNB_index].T304_cnt = 2000;
+        break;
+      case NR_ReconfigurationWithSync__t304_ms10000:
+        NR_UE_rrc_inst[ctxt_pP->module_id].Info[gNB_index].T304_cnt = 10000;
+        break;
+      default:
+        NR_UE_rrc_inst[ctxt_pP->module_id].Info[gNB_index].T304_cnt = 50;
+    }
   }
 
   if(NR_UE_rrc_inst[ctxt_pP->module_id].cell_group_config == NULL){