diff --git a/examples/drivers/windows/include/openthread-core-windows-config.h b/examples/drivers/windows/include/openthread-core-windows-config.h
index 65cf2080c..c0af32a10 100644
--- a/examples/drivers/windows/include/openthread-core-windows-config.h
+++ b/examples/drivers/windows/include/openthread-core-windows-config.h
@@ -83,7 +83,7 @@
  * The log level.
  *
  */
-#define OPENTHREAD_CONFIG_LOG_LEVEL                         OPENTHREAD_LOG_LEVEL_DEBG
+#define OPENTHREAD_CONFIG_LOG_LEVEL                         OT_LOG_LEVEL_DEBG
 
  /**
  * @def OPENTHREAD_CONFIG_LOG_PKT_DUMP
diff --git a/examples/platforms/nrf52840/diag.c b/examples/platforms/nrf52840/diag.c
index 8f67ac022..f4085e074 100644
--- a/examples/platforms/nrf52840/diag.c
+++ b/examples/platforms/nrf52840/diag.c
@@ -254,7 +254,7 @@ void otPlatDiagRadioReceived(otInstance *aInstance, RadioPacket *aFrame, otError
 
             if (strncmp(message->mMessageDescriptor, "DiagMessage", 11) == 0)
             {
-                otPlatLog(kLogLevelDebg, kLogRegionPlatform,
+                otPlatLog(OT_LOG_LEVEL_DEBG, OT_LOG_REGION_PLATFORM,
                           "{\"Frame\":{"
                           "\"LocalChannel\":%u ,"
                           "\"RemoteChannel\":%u,"
@@ -307,7 +307,7 @@ void otPlatDiagAlarmCallback(otInstance *aInstance)
         {
             sTransmitActive = false;
             otPlatAlarmStop(aInstance);
-            otPlatLog(kLogLevelDebg, kLogRegionPlatform, "Transmit done");
+            otPlatLog(OT_LOG_LEVEL_DEBG, OT_LOG_REGION_PLATFORM, "Transmit done");
         }
     }
 }
diff --git a/examples/platforms/nrf52840/logging.c b/examples/platforms/nrf52840/logging.c
index c2e42ea2f..57e5929a3 100644
--- a/examples/platforms/nrf52840/logging.c
+++ b/examples/platforms/nrf52840/logging.c
@@ -76,16 +76,16 @@ static inline const char *levelToString(otLogLevel aLogLevel)
 {
     switch (aLogLevel)
     {
-    case kLogLevelCrit:
+    case OT_LOG_LEVEL_CRIT:
         return RTT_COLOR_CODE_RED;
 
-    case kLogLevelWarn:
+    case OT_LOG_LEVEL_WARN:
         return RTT_COLOR_CODE_YELLOW;
 
-    case kLogLevelInfo:
+    case OT_LOG_LEVEL_INFO:
         return RTT_COLOR_CODE_GREEN;
 
-    case kLogLevelDebg:
+    case OT_LOG_LEVEL_DEBG:
     default:
         return RTT_COLOR_CODE_DEFAULT;
     }
diff --git a/include/openthread/platform/logging.h b/include/openthread/platform/logging.h
index b708034ac..dd9ab4cc9 100644
--- a/include/openthread/platform/logging.h
+++ b/include/openthread/platform/logging.h
@@ -54,24 +54,13 @@ extern "C" {
 /**
  * Log levels.
  */
-#define OPENTHREAD_LOG_LEVEL_NONE  0  ///< None
-#define OPENTHREAD_LOG_LEVEL_CRIT  1  ///< Critical
-#define OPENTHREAD_LOG_LEVEL_WARN  2  ///< Warning
-#define OPENTHREAD_LOG_LEVEL_INFO  3  ///< Info
-#define OPENTHREAD_LOG_LEVEL_DEBG  4  ///< Debug
+#define OT_LOG_LEVEL_NONE  0  ///< None
+#define OT_LOG_LEVEL_CRIT  1  ///< Critical
+#define OT_LOG_LEVEL_WARN  2  ///< Warning
+#define OT_LOG_LEVEL_INFO  3  ///< Info
+#define OT_LOG_LEVEL_DEBG  4  ///< Debug
 
-/**
- * This enum represents different log levels.
- *
- */
-typedef enum otLogLevel
-{
-    kLogLevelNone      = OPENTHREAD_LOG_LEVEL_NONE,  ///< None
-    kLogLevelCrit      = OPENTHREAD_LOG_LEVEL_CRIT,  ///< Critical
-    kLogLevelWarn      = OPENTHREAD_LOG_LEVEL_WARN,  ///< Warning
-    kLogLevelInfo      = OPENTHREAD_LOG_LEVEL_INFO,  ///< Info
-    kLogLevelDebg      = OPENTHREAD_LOG_LEVEL_DEBG,  ///< Debug
-} otLogLevel;
+typedef uint8_t otLogLevel;
 
 /**
  * This enum represents log regions.
@@ -79,19 +68,19 @@ typedef enum otLogLevel
  */
 typedef enum otLogRegion
 {
-    kLogRegionApi      = 1,  ///< OpenThread API
-    kLogRegionMle      = 2,  ///< MLE
-    kLogRegionArp      = 3,  ///< EID-to-RLOC mapping.
-    kLogRegionNetData  = 4,  ///< Network Data
-    kLogRegionIcmp     = 5,  ///< ICMPv6
-    kLogRegionIp6      = 6,  ///< IPv6
-    kLogRegionMac      = 7,  ///< IEEE 802.15.4 MAC
-    kLogRegionMem      = 8,  ///< Memory
-    kLogRegionNcp      = 9,  ///< NCP
-    kLogRegionMeshCoP  = 10, ///< Mesh Commissioning Protocol
-    kLogRegionNetDiag  = 11, ///< Network Diagnostic
-    kLogRegionPlatform = 12, ///< Platform
-    kLogRegionCoap     = 13, ///< CoAP
+    OT_LOG_REGION_API      = 1,  ///< OpenThread API
+    OT_LOG_REGION_MLE      = 2,  ///< MLE
+    OT_LOG_REGION_ARP      = 3,  ///< EID-to-RLOC mapping.
+    OT_LOG_REGION_NET_DATA = 4,  ///< Network Data
+    OT_LOG_REGION_ICMP     = 5,  ///< ICMPv6
+    OT_LOG_REGION_IP6      = 6,  ///< IPv6
+    OT_LOG_REGION_MAC      = 7,  ///< IEEE 802.15.4 MAC
+    OT_LOG_REGION_MEM      = 8,  ///< Memory
+    OT_LOG_REGION_NCP      = 9,  ///< NCP
+    OT_LOG_REGION_MESH_COP = 10, ///< Mesh Commissioning Protocol
+    OT_LOG_REGION_NET_DIAG = 11, ///< Network Diagnostic
+    OT_LOG_REGION_PLATFORM = 12, ///< Platform
+    OT_LOG_REGION_COAP     = 13, ///< CoAP
 } otLogRegion;
 
 /**
diff --git a/src/core/common/logging.cpp b/src/core/common/logging.cpp
index f529ede08..6d5a9d4e2 100644
--- a/src/core/common/logging.cpp
+++ b/src/core/common/logging.cpp
@@ -166,23 +166,23 @@ const char *otLogLevelToString(otLogLevel aLevel)
 
     switch (aLevel)
     {
-    case kLogLevelNone:
+    case OT_LOG_LEVEL_NONE:
         retval = "NONE";
         break;
 
-    case kLogLevelCrit:
+    case OT_LOG_LEVEL_CRIT:
         retval = "CRIT";
         break;
 
-    case kLogLevelWarn:
+    case OT_LOG_LEVEL_WARN:
         retval = "WARN";
         break;
 
-    case kLogLevelInfo:
+    case OT_LOG_LEVEL_INFO:
         retval = "INFO";
         break;
 
-    case kLogLevelDebg:
+    case OT_LOG_LEVEL_DEBG:
         retval = "DEBG";
         break;
 
@@ -202,55 +202,55 @@ const char *otLogRegionToString(otLogRegion aRegion)
 
     switch (aRegion)
     {
-    case kLogRegionApi:
+    case OT_LOG_REGION_API:
         retval = "-API-----";
         break;
 
-    case kLogRegionMle:
+    case OT_LOG_REGION_MLE:
         retval = "-MLE-----";
         break;
 
-    case kLogRegionCoap:
+    case OT_LOG_REGION_COAP:
         retval = "-COAP----";
         break;
 
-    case kLogRegionArp:
+    case OT_LOG_REGION_ARP:
         retval = "-ARP-----";
         break;
 
-    case kLogRegionNetData:
+    case OT_LOG_REGION_NET_DATA:
         retval = "-N-DATA--";
         break;
 
-    case kLogRegionIcmp:
+    case OT_LOG_REGION_ICMP:
         retval = "-ICMP----";
         break;
 
-    case kLogRegionIp6:
+    case OT_LOG_REGION_IP6:
         retval = "-IP6-----";
         break;
 
-    case kLogRegionMac:
+    case OT_LOG_REGION_MAC:
         retval = "-MAC-----";
         break;
 
-    case kLogRegionMem:
+    case OT_LOG_REGION_MEM:
         retval = "-MEM-----";
         break;
 
-    case kLogRegionNcp:
+    case OT_LOG_REGION_NCP:
         retval = "-NCP-----";
         break;
 
-    case kLogRegionMeshCoP:
+    case OT_LOG_REGION_MESH_COP:
         retval = "-MESH-CP-";
         break;
 
-    case kLogRegionNetDiag:
+    case OT_LOG_REGION_NET_DIAG:
         retval = "-DIAG----";
         break;
 
-    case kLogRegionPlatform:
+    case OT_LOG_REGION_PLATFORM:
         retval = "-PLAT----";
         break;
 
diff --git a/src/core/common/logging.hpp b/src/core/common/logging.hpp
index 55ba57ea6..44528431a 100644
--- a/src/core/common/logging.hpp
+++ b/src/core/common/logging.hpp
@@ -76,9 +76,9 @@ extern "C" {
  * @param[in]  ...      Arguments for the format specification.
  *
  */
-#if OPENTHREAD_CONFIG_LOG_LEVEL >= OPENTHREAD_LOG_LEVEL_CRIT
+#if OPENTHREAD_CONFIG_LOG_LEVEL >= OT_LOG_LEVEL_CRIT
 #define otLogCrit(aInstance, aRegion, aFormat, ...)                         \
-    _otLogFormatter(aInstance, kLogLevelCrit, aRegion, aFormat, ## __VA_ARGS__)
+    _otLogFormatter(aInstance, OT_LOG_LEVEL_CRIT, aRegion, aFormat, ## __VA_ARGS__)
 #else
 #define otLogCrit(aInstance, aRegion, aFormat, ...)
 #endif
@@ -93,9 +93,9 @@ extern "C" {
  * @param[in]  ...      Arguments for the format specification.
  *
  */
-#if OPENTHREAD_CONFIG_LOG_LEVEL >= OPENTHREAD_LOG_LEVEL_WARN
+#if OPENTHREAD_CONFIG_LOG_LEVEL >= OT_LOG_LEVEL_WARN
 #define otLogWarn(aInstance, aRegion, aFormat, ...)                         \
-    _otLogFormatter(aInstance, kLogLevelWarn, aRegion, aFormat, ## __VA_ARGS__)
+    _otLogFormatter(aInstance, OT_LOG_LEVEL_WARN, aRegion, aFormat, ## __VA_ARGS__)
 #else
 #define otLogWarn(aInstance, aRegion, aFormat, ...)
 #endif
@@ -110,9 +110,9 @@ extern "C" {
  * @param[in]  ...      Arguments for the format specification.
  *
  */
-#if OPENTHREAD_CONFIG_LOG_LEVEL >= OPENTHREAD_LOG_LEVEL_INFO
+#if OPENTHREAD_CONFIG_LOG_LEVEL >= OT_LOG_LEVEL_INFO
 #define otLogInfo(aInstance, aRegion, aFormat, ...)                         \
-    _otLogFormatter(aInstance, kLogLevelInfo, aRegion, aFormat, ## __VA_ARGS__)
+    _otLogFormatter(aInstance, OT_LOG_LEVEL_INFO, aRegion, aFormat, ## __VA_ARGS__)
 #else
 #define otLogInfo(aInstance, aRegion, aFormat, ...)
 #endif
@@ -127,9 +127,9 @@ extern "C" {
  * @param[in]  ...      Arguments for the format specification.
  *
  */
-#if OPENTHREAD_CONFIG_LOG_LEVEL >= OPENTHREAD_LOG_LEVEL_DEBG
+#if OPENTHREAD_CONFIG_LOG_LEVEL >= OT_LOG_LEVEL_DEBG
 #define otLogDebg(aInstance, aRegion, aFormat, ...)                         \
-    _otLogFormatter(aInstance, kLogLevelDebg, aRegion, aFormat, ## __VA_ARGS__)
+    _otLogFormatter(aInstance, OT_LOG_LEVEL_DEBG, aRegion, aFormat, ## __VA_ARGS__)
 #else
 #define otLogDebg(aInstance, aRegion, aFormat, ...)
 #endif
@@ -176,10 +176,10 @@ extern "C" {
  *
  */
 #if OPENTHREAD_CONFIG_LOG_API == 1
-#define otLogCritApi(aInstance, aFormat, ...) otLogCrit(aInstance, kLogRegionApi, aFormat, ## __VA_ARGS__)
-#define otLogWarnApi(aInstance, aFormat, ...) otLogWarn(aInstance, kLogRegionApi, aFormat, ## __VA_ARGS__)
-#define otLogInfoApi(aInstance, aFormat, ...) otLogInfo(aInstance, kLogRegionApi, aFormat, ## __VA_ARGS__)
-#define otLogDebgApi(aInstance, aFormat, ...) otLogDebg(aInstance, kLogRegionApi, aFormat, ## __VA_ARGS__)
+#define otLogCritApi(aInstance, aFormat, ...) otLogCrit(aInstance, OT_LOG_REGION_API, aFormat, ## __VA_ARGS__)
+#define otLogWarnApi(aInstance, aFormat, ...) otLogWarn(aInstance, OT_LOG_REGION_API, aFormat, ## __VA_ARGS__)
+#define otLogInfoApi(aInstance, aFormat, ...) otLogInfo(aInstance, OT_LOG_REGION_API, aFormat, ## __VA_ARGS__)
+#define otLogDebgApi(aInstance, aFormat, ...) otLogDebg(aInstance, OT_LOG_REGION_API, aFormat, ## __VA_ARGS__)
 #else
 #define otLogCritApi(aInstance, aFormat, ...)
 #define otLogWarnApi(aInstance, aFormat, ...)
@@ -227,10 +227,10 @@ extern "C" {
  *
  */
 #if OPENTHREAD_CONFIG_LOG_MLE == 1
-#define otLogCritMeshCoP(aInstance, aFormat, ...) otLogCrit(aInstance, kLogRegionMeshCoP, aFormat, ## __VA_ARGS__)
-#define otLogWarnMeshCoP(aInstance, aFormat, ...) otLogWarn(aInstance, kLogRegionMeshCoP, aFormat, ## __VA_ARGS__)
-#define otLogInfoMeshCoP(aInstance, aFormat, ...) otLogInfo(aInstance, kLogRegionMeshCoP, aFormat, ## __VA_ARGS__)
-#define otLogDebgMeshCoP(aInstance, aFormat, ...) otLogDebg(aInstance, kLogRegionMeshCoP, aFormat, ## __VA_ARGS__)
+#define otLogCritMeshCoP(aInstance, aFormat, ...) otLogCrit(aInstance, OT_LOG_REGION_MESH_COP, aFormat, ## __VA_ARGS__)
+#define otLogWarnMeshCoP(aInstance, aFormat, ...) otLogWarn(aInstance, OT_LOG_REGION_MESH_COP, aFormat, ## __VA_ARGS__)
+#define otLogInfoMeshCoP(aInstance, aFormat, ...) otLogInfo(aInstance, OT_LOG_REGION_MESH_COP, aFormat, ## __VA_ARGS__)
+#define otLogDebgMeshCoP(aInstance, aFormat, ...) otLogDebg(aInstance, OT_LOG_REGION_MESH_COP, aFormat, ## __VA_ARGS__)
 #else
 #define otLogCritMeshCoP(aInstance, aFormat, ...)
 #define otLogWarnMeshCoP(aInstance, aFormat, ...)
@@ -283,12 +283,12 @@ extern "C" {
  *
  */
 #if OPENTHREAD_CONFIG_LOG_MLE == 1
-#define otLogCritMle(aInstance, aFormat, ...) otLogCrit(aInstance, kLogRegionMle, aFormat, ## __VA_ARGS__)
-#define otLogWarnMle(aInstance, aFormat, ...) otLogWarn(aInstance, kLogRegionMle, aFormat, ## __VA_ARGS__)
+#define otLogCritMle(aInstance, aFormat, ...) otLogCrit(aInstance, OT_LOG_REGION_MLE, aFormat, ## __VA_ARGS__)
+#define otLogWarnMle(aInstance, aFormat, ...) otLogWarn(aInstance, OT_LOG_REGION_MLE, aFormat, ## __VA_ARGS__)
 #define otLogWarnMleErr(aInstance, aError, aFormat, ...)                    \
-    otLogWarn(aInstance, kLogRegionMac, "Error %s: " aFormat, otThreadErrorToString(aError), ## __VA_ARGS__)
-#define otLogInfoMle(aInstance, aFormat, ...) otLogInfo(aInstance, kLogRegionMle, aFormat, ## __VA_ARGS__)
-#define otLogDebgMle(aInstance, aFormat, ...) otLogDebg(aInstance, kLogRegionMle, aFormat, ## __VA_ARGS__)
+    otLogWarn(aInstance, OT_LOG_REGION_MAC, "Error %s: " aFormat, otThreadErrorToString(aError), ## __VA_ARGS__)
+#define otLogInfoMle(aInstance, aFormat, ...) otLogInfo(aInstance, OT_LOG_REGION_MLE, aFormat, ## __VA_ARGS__)
+#define otLogDebgMle(aInstance, aFormat, ...) otLogDebg(aInstance, OT_LOG_REGION_MLE, aFormat, ## __VA_ARGS__)
 #else
 #define otLogCritMle(aInstance, aFormat, ...)
 #define otLogWarnMle(aInstance, aFormat, ...)
@@ -337,10 +337,10 @@ extern "C" {
  *
  */
 #if OPENTHREAD_CONFIG_LOG_ARP == 1
-#define otLogCritArp(aInstance, aFormat, ...) otLogCrit(aInstance, kLogRegionArp, aFormat, ## __VA_ARGS__)
-#define otLogWarnArp(aInstance, aFormat, ...) otLogWarn(aInstance, kLogRegionArp, aFormat, ## __VA_ARGS__)
-#define otLogInfoArp(aInstance, aFormat, ...) otLogInfo(aInstance, kLogRegionArp, aFormat, ## __VA_ARGS__)
-#define otLogDebgArp(aInstance, aFormat, ...) otLogDebg(aInstance, kLogRegionArp, aFormat, ## __VA_ARGS__)
+#define otLogCritArp(aInstance, aFormat, ...) otLogCrit(aInstance, OT_LOG_REGION_ARP, aFormat, ## __VA_ARGS__)
+#define otLogWarnArp(aInstance, aFormat, ...) otLogWarn(aInstance, OT_LOG_REGION_ARP, aFormat, ## __VA_ARGS__)
+#define otLogInfoArp(aInstance, aFormat, ...) otLogInfo(aInstance, OT_LOG_REGION_ARP, aFormat, ## __VA_ARGS__)
+#define otLogDebgArp(aInstance, aFormat, ...) otLogDebg(aInstance, OT_LOG_REGION_ARP, aFormat, ## __VA_ARGS__)
 #else
 #define otLogCritArp(aInstance, aFormat, ...)
 #define otLogWarnArp(aInstance, aFormat, ...)
@@ -388,10 +388,10 @@ extern "C" {
  *
  */
 #if OPENTHREAD_CONFIG_LOG_NETDATA == 1
-#define otLogCritNetData(aInstance, aFormat, ...) otLogCrit(aInstance, kLogRegionNetData, aFormat, ## __VA_ARGS__)
-#define otLogWarnNetData(aInstance, aFormat, ...) otLogWarn(aInstance, kLogRegionNetData, aFormat, ## __VA_ARGS__)
-#define otLogInfoNetData(aInstance, aFormat, ...) otLogInfo(aInstance, kLogRegionNetData, aFormat, ## __VA_ARGS__)
-#define otLogDebgNetData(aInstance, aFormat, ...) otLogDebg(aInstance, kLogRegionNetData, aFormat, ## __VA_ARGS__)
+#define otLogCritNetData(aInstance, aFormat, ...) otLogCrit(aInstance, OT_LOG_REGION_NET_DATA, aFormat, ## __VA_ARGS__)
+#define otLogWarnNetData(aInstance, aFormat, ...) otLogWarn(aInstance, OT_LOG_REGION_NET_DATA, aFormat, ## __VA_ARGS__)
+#define otLogInfoNetData(aInstance, aFormat, ...) otLogInfo(aInstance, OT_LOG_REGION_NET_DATA, aFormat, ## __VA_ARGS__)
+#define otLogDebgNetData(aInstance, aFormat, ...) otLogDebg(aInstance, OT_LOG_REGION_NET_DATA, aFormat, ## __VA_ARGS__)
 #else
 #define otLogCritNetData(aInstance, aFormat, ...)
 #define otLogWarnNetData(aInstance, aFormat, ...)
@@ -439,10 +439,10 @@ extern "C" {
  *
  */
 #if OPENTHREAD_CONFIG_LOG_ICMP == 1
-#define otLogCritIcmp(aInstance, aFormat, ...) otLogCrit(aInstance, kLogRegionIcmp, aFormat, ## __VA_ARGS__)
-#define otLogWarnIcmp(aInstance, aFormat, ...) otLogWarn(aInstance, kLogRegionIcmp, aFormat, ## __VA_ARGS__)
-#define otLogInfoIcmp(aInstance, aFormat, ...) otLogInfo(aInstance, kLogRegionIcmp, aFormat, ## __VA_ARGS__)
-#define otLogDebgIcmp(aInstance, aFormat, ...) otLogDebg(aInstance, kLogRegionIcmp, aFormat, ## __VA_ARGS__)
+#define otLogCritIcmp(aInstance, aFormat, ...) otLogCrit(aInstance, OT_LOG_REGION_ICMP, aFormat, ## __VA_ARGS__)
+#define otLogWarnIcmp(aInstance, aFormat, ...) otLogWarn(aInstance, OT_LOG_REGION_ICMP, aFormat, ## __VA_ARGS__)
+#define otLogInfoIcmp(aInstance, aFormat, ...) otLogInfo(aInstance, OT_LOG_REGION_ICMP, aFormat, ## __VA_ARGS__)
+#define otLogDebgIcmp(aInstance, aFormat, ...) otLogDebg(aInstance, OT_LOG_REGION_ICMP, aFormat, ## __VA_ARGS__)
 #else
 #define otLogCritIcmp(aInstance, aFormat, ...)
 #define otLogWarnIcmp(aInstance, aFormat, ...)
@@ -490,10 +490,10 @@ extern "C" {
  *
  */
 #if OPENTHREAD_CONFIG_LOG_IP6 == 1
-#define otLogCritIp6(aInstance, aFormat, ...) otLogCrit(aInstance, kLogRegionIp6, aFormat, ## __VA_ARGS__)
-#define otLogWarnIp6(aInstance, aFormat, ...) otLogWarn(aInstance, kLogRegionIp6, aFormat, ## __VA_ARGS__)
-#define otLogInfoIp6(aInstance, aFormat, ...) otLogInfo(aInstance, kLogRegionIp6, aFormat, ## __VA_ARGS__)
-#define otLogDebgIp6(aInstance, aFormat, ...) otLogDebg(aInstance, kLogRegionIp6, aFormat, ## __VA_ARGS__)
+#define otLogCritIp6(aInstance, aFormat, ...) otLogCrit(aInstance, OT_LOG_REGION_IP6, aFormat, ## __VA_ARGS__)
+#define otLogWarnIp6(aInstance, aFormat, ...) otLogWarn(aInstance, OT_LOG_REGION_IP6, aFormat, ## __VA_ARGS__)
+#define otLogInfoIp6(aInstance, aFormat, ...) otLogInfo(aInstance, OT_LOG_REGION_IP6, aFormat, ## __VA_ARGS__)
+#define otLogDebgIp6(aInstance, aFormat, ...) otLogDebg(aInstance, OT_LOG_REGION_IP6, aFormat, ## __VA_ARGS__)
 #else
 #define otLogCritIp6(aInstance, aFormat, ...)
 #define otLogWarnIp6(aInstance, aFormat, ...)
@@ -541,12 +541,12 @@ extern "C" {
  *
  */
 #if OPENTHREAD_CONFIG_LOG_MAC == 1
-#define otLogCritMac(aInstance, aFormat, ...) otLogCrit(aInstance, kLogRegionMac, aFormat, ## __VA_ARGS__)
-#define otLogWarnMac(aInstance, aFormat, ...) otLogWarn(aInstance, kLogRegionMac, aFormat, ## __VA_ARGS__)
-#define otLogInfoMac(aInstance, aFormat, ...) otLogInfo(aInstance, kLogRegionMac, aFormat, ## __VA_ARGS__)
-#define otLogDebgMac(aInstance, aFormat, ...) otLogDebg(aInstance, kLogRegionMac, aFormat, ## __VA_ARGS__)
+#define otLogCritMac(aInstance, aFormat, ...) otLogCrit(aInstance, OT_LOG_REGION_MAC, aFormat, ## __VA_ARGS__)
+#define otLogWarnMac(aInstance, aFormat, ...) otLogWarn(aInstance, OT_LOG_REGION_MAC, aFormat, ## __VA_ARGS__)
+#define otLogInfoMac(aInstance, aFormat, ...) otLogInfo(aInstance, OT_LOG_REGION_MAC, aFormat, ## __VA_ARGS__)
+#define otLogDebgMac(aInstance, aFormat, ...) otLogDebg(aInstance, OT_LOG_REGION_MAC, aFormat, ## __VA_ARGS__)
 #define otLogDebgMacErr(aInstance, aError, aFormat, ...)                    \
-    otLogWarn(aInstance, kLogRegionMac, "Error %s: " aFormat, otThreadErrorToString(aError), ## __VA_ARGS__)
+    otLogWarn(aInstance, OT_LOG_REGION_MAC, "Error %s: " aFormat, otThreadErrorToString(aError), ## __VA_ARGS__)
 #else
 #define otLogCritMac(aInstance, aFormat, ...)
 #define otLogWarnMac(aInstance, aFormat, ...)
@@ -595,10 +595,10 @@ extern "C" {
  *
  */
 #if OPENTHREAD_CONFIG_LOG_MEM == 1
-#define otLogCritMem(aInstance, aFormat, ...) otLogCrit(aInstance, kLogRegionMem, aFormat, ## __VA_ARGS__)
-#define otLogWarnMem(aInstance, aFormat, ...) otLogWarn(aInstance, kLogRegionMem, aFormat, ## __VA_ARGS__)
-#define otLogInfoMem(aInstance, aFormat, ...) otLogInfo(aInstance, kLogRegionMem, aFormat, ## __VA_ARGS__)
-#define otLogDebgMem(aInstance, aFormat, ...) otLogDebg(aInstance, kLogRegionMem, aFormat, ## __VA_ARGS__)
+#define otLogCritMem(aInstance, aFormat, ...) otLogCrit(aInstance, OT_LOG_REGION_MEM, aFormat, ## __VA_ARGS__)
+#define otLogWarnMem(aInstance, aFormat, ...) otLogWarn(aInstance, OT_LOG_REGION_MEM, aFormat, ## __VA_ARGS__)
+#define otLogInfoMem(aInstance, aFormat, ...) otLogInfo(aInstance, OT_LOG_REGION_MEM, aFormat, ## __VA_ARGS__)
+#define otLogDebgMem(aInstance, aFormat, ...) otLogDebg(aInstance, OT_LOG_REGION_MEM, aFormat, ## __VA_ARGS__)
 #else
 #define otLogCritMem(aInstance, aFormat, ...)
 #define otLogWarnMem(aInstance, aFormat, ...)
@@ -646,10 +646,10 @@ extern "C" {
  *
  */
 #if OPENTHREAD_CONFIG_LOG_NETDIAG == 1
-#define otLogCritNetDiag(aInstance, aFormat, ...) otLogCrit(aInstance, kLogRegionNetDiag, aFormat, ## __VA_ARGS__)
-#define otLogWarnNetDiag(aInstance, aFormat, ...) otLogWarn(aInstance, kLogRegionNetDiag, aFormat, ## __VA_ARGS__)
-#define otLogInfoNetDiag(aInstance, aFormat, ...) otLogInfo(aInstance, kLogRegionNetDiag, aFormat, ## __VA_ARGS__)
-#define otLogDebgNetDiag(aInstance, aFormat, ...) otLogDebg(aInstance, kLogRegionNetDiag, aFormat, ## __VA_ARGS__)
+#define otLogCritNetDiag(aInstance, aFormat, ...) otLogCrit(aInstance, OT_LOG_REGION_NET_DIAG, aFormat, ## __VA_ARGS__)
+#define otLogWarnNetDiag(aInstance, aFormat, ...) otLogWarn(aInstance, OT_LOG_REGION_NET_DIAG, aFormat, ## __VA_ARGS__)
+#define otLogInfoNetDiag(aInstance, aFormat, ...) otLogInfo(aInstance, OT_LOG_REGION_NET_DIAG, aFormat, ## __VA_ARGS__)
+#define otLogDebgNetDiag(aInstance, aFormat, ...) otLogDebg(aInstance, OT_LOG_REGION_NET_DIAG, aFormat, ## __VA_ARGS__)
 #else
 #define otLogCritNetDiag(aInstance, aFormat, ...)
 #define otLogWarnNetDiag(aInstance, aFormat, ...)
@@ -668,7 +668,7 @@ extern "C" {
  */
 #if OPENTHREAD_ENABLE_CERT_LOG
 #define otLogCertMeshCoP(aInstance, aFormat, ...)                           \
-    _otLogFormatter(aInstance, kLogLevelNone, kLogRegionMeshCoP, aFormat, ## __VA_ARGS__)
+    _otLogFormatter(aInstance, OT_LOG_LEVEL_NONE, OT_LOG_REGION_MESH_COP, aFormat, ## __VA_ARGS__)
 #else
 #define otLogCertMeshCoP(aInstance, aFormat, ...)
 #endif
@@ -713,10 +713,10 @@ extern "C" {
 *
 */
 #if OPENTHREAD_CONFIG_LOG_PLATFORM == 1
-#define otLogCritPlat(aInstance, aFormat, ...) otLogCrit(aInstance, kLogRegionPlatform, aFormat, ## __VA_ARGS__)
-#define otLogWarnPlat(aInstance, aFormat, ...) otLogWarn(aInstance, kLogRegionPlatform, aFormat, ## __VA_ARGS__)
-#define otLogInfoPlat(aInstance, aFormat, ...) otLogInfo(aInstance, kLogRegionPlatform, aFormat, ## __VA_ARGS__)
-#define otLogDebgPlat(aInstance, aFormat, ...) otLogDebg(aInstance, kLogRegionPlatform, aFormat, ## __VA_ARGS__)
+#define otLogCritPlat(aInstance, aFormat, ...) otLogCrit(aInstance, OT_LOG_REGION_PLATFORM, aFormat, ## __VA_ARGS__)
+#define otLogWarnPlat(aInstance, aFormat, ...) otLogWarn(aInstance, OT_LOG_REGION_PLATFORM, aFormat, ## __VA_ARGS__)
+#define otLogInfoPlat(aInstance, aFormat, ...) otLogInfo(aInstance, OT_LOG_REGION_PLATFORM, aFormat, ## __VA_ARGS__)
+#define otLogDebgPlat(aInstance, aFormat, ...) otLogDebg(aInstance, OT_LOG_REGION_PLATFORM, aFormat, ## __VA_ARGS__)
 #else
 #define otLogCritPlat(aInstance, aFormat, ...)
 #define otLogWarnPlat(aInstance, aFormat, ...)
@@ -764,12 +764,12 @@ extern "C" {
  *
  */
 #if OPENTHREAD_CONFIG_LOG_COAP == 1
-#define otLogCritCoap(aInstance, aFormat, ...) otLogCrit(aInstance, kLogRegionCoap, aFormat, ## __VA_ARGS__)
-#define otLogWarnCoap(aInstance, aFormat, ...) otLogWarn(aInstance, kLogRegionCoap, aFormat, ## __VA_ARGS__)
-#define otLogInfoCoap(aInstance, aFormat, ...) otLogInfo(aInstance, kLogRegionCoap, aFormat, ## __VA_ARGS__)
+#define otLogCritCoap(aInstance, aFormat, ...) otLogCrit(aInstance, OT_LOG_REGION_COAP, aFormat, ## __VA_ARGS__)
+#define otLogWarnCoap(aInstance, aFormat, ...) otLogWarn(aInstance, OT_LOG_REGION_COAP, aFormat, ## __VA_ARGS__)
+#define otLogInfoCoap(aInstance, aFormat, ...) otLogInfo(aInstance, OT_LOG_REGION_COAP, aFormat, ## __VA_ARGS__)
 #define otLogInfoCoapErr(aInstance, aError, aFormat, ...)               \
-    otLogInfo(aInstance, kLogRegionCoap, "Error %s: " aFormat, otThreadErrorToString(aError), ## __VA_ARGS__)
-#define otLogDebgCoap(aInstance, aFormat, ...) otLogDebg(aInstance, kLogRegionCoap, aFormat, ## __VA_ARGS__)
+    otLogInfo(aInstance, OT_LOG_REGION_COAP, "Error %s: " aFormat, otThreadErrorToString(aError), ## __VA_ARGS__)
+#define otLogDebgCoap(aInstance, aFormat, ...) otLogDebg(aInstance, OT_LOG_REGION_COAP, aFormat, ## __VA_ARGS__)
 #else
 #define otLogCritCoap(aInstance, aFormat, ...)
 #define otLogWarnCoap(aInstance, aFormat, ...)
@@ -791,9 +791,9 @@ extern "C" {
  * @param[in]  aLength  Number of bytes to print.
  *
  */
-#if OPENTHREAD_CONFIG_LOG_LEVEL >= OPENTHREAD_LOG_LEVEL_CRIT
+#if OPENTHREAD_CONFIG_LOG_LEVEL >= OT_LOG_LEVEL_CRIT
 #define otDumpCrit(aInstance, aRegion, aId, aBuf, aLength)                  \
-    otDump(aInstance, kLogLevelCrit, aRegion, aId, aBuf, aLength)
+    otDump(aInstance, OT_LOG_LEVEL_CRIT, aRegion, aId, aBuf, aLength)
 #else
 #define otDumpCrit(aInstance, aRegion, aId, aBuf, aLength)
 #endif
@@ -809,9 +809,9 @@ extern "C" {
  * @param[in]  aLength  Number of bytes to print.
  *
  */
-#if OPENTHREAD_CONFIG_LOG_LEVEL >= OPENTHREAD_LOG_LEVEL_WARN
+#if OPENTHREAD_CONFIG_LOG_LEVEL >= OT_LOG_LEVEL_WARN
 #define otDumpWarn(aInstance, aRegion, aId, aBuf, aLength)                  \
-    otDump(aInstance, kLogLevelWarn, aRegion, aId, aBuf, aLength)
+    otDump(aInstance, OT_LOG_LEVEL_WARN, aRegion, aId, aBuf, aLength)
 #else
 #define otDumpWarn(aInstance, aRegion, aId, aBuf, aLength)
 #endif
@@ -827,9 +827,9 @@ extern "C" {
  * @param[in]  aLength  Number of bytes to print.
  *
  */
-#if OPENTHREAD_CONFIG_LOG_LEVEL >= OPENTHREAD_LOG_LEVEL_INFO
+#if OPENTHREAD_CONFIG_LOG_LEVEL >= OT_LOG_LEVEL_INFO
 #define otDumpInfo(aInstance, aRegion, aId, aBuf, aLength)                  \
-    otDump(aInstance, kLogLevelInfo, aRegion, aId, aBuf, aLength)
+    otDump(aInstance, OT_LOG_LEVEL_INFO, aRegion, aId, aBuf, aLength)
 #else
 #define otDumpInfo(aInstance, aRegion, aId, aBuf, aLength)
 #endif
@@ -845,9 +845,9 @@ extern "C" {
  * @param[in]  aLength  Number of bytes to print.
  *
  */
-#if OPENTHREAD_CONFIG_LOG_LEVEL >= OPENTHREAD_LOG_LEVEL_DEBG
+#if OPENTHREAD_CONFIG_LOG_LEVEL >= OT_LOG_LEVEL_DEBG
 #define otDumpDebg(aInstance, aRegion, aId, aBuf, aLength)                  \
-    otDump(aInstance, kLogLevelDebg, aRegion, aId, aBuf, aLength)
+    otDump(aInstance, OT_LOG_LEVEL_DEBG, aRegion, aId, aBuf, aLength)
 #else
 #define otDumpDebg(aInstance, aRegion, aId, aBuf, aLength)
 #endif
@@ -896,10 +896,10 @@ extern "C" {
  *
  */
 #if OPENTHREAD_CONFIG_LOG_NETDATA == 1
-#define otDumpCritNetData(aInstance, aId, aBuf, aLength) otDumpCrit(aInstance, kLogRegionNetData, aId, aBuf, aLength)
-#define otDumpWarnNetData(aInstance, aId, aBuf, aLength) otDumpWarn(aInstance, kLogRegionNetData, aId, aBuf, aLength)
-#define otDumpInfoNetData(aInstance, aId, aBuf, aLength) otDumpInfo(aInstance, kLogRegionNetData, aId, aBuf, aLength)
-#define otDumpDebgNetData(aInstance, aId, aBuf, aLength) otDumpDebg(aInstance, kLogRegionNetData, aId, aBuf, aLength)
+#define otDumpCritNetData(aInstance, aId, aBuf, aLength) otDumpCrit(aInstance, OT_LOG_REGION_NET_DATA, aId, aBuf, aLength)
+#define otDumpWarnNetData(aInstance, aId, aBuf, aLength) otDumpWarn(aInstance, OT_LOG_REGION_NET_DATA, aId, aBuf, aLength)
+#define otDumpInfoNetData(aInstance, aId, aBuf, aLength) otDumpInfo(aInstance, OT_LOG_REGION_NET_DATA, aId, aBuf, aLength)
+#define otDumpDebgNetData(aInstance, aId, aBuf, aLength) otDumpDebg(aInstance, OT_LOG_REGION_NET_DATA, aId, aBuf, aLength)
 #else
 #define otDumpCritNetData(aInstance, aId, aBuf, aLength)
 #define otDumpWarnNetData(aInstance, aId, aBuf, aLength)
@@ -951,10 +951,10 @@ extern "C" {
  *
  */
 #if OPENTHREAD_CONFIG_LOG_MLE == 1
-#define otDumpCritMle(aInstance, aId, aBuf, aLength) otDumpCrit(aInstance, kLogRegionMle, aId, aBuf, aLength)
-#define otDumpWarnMle(aInstance, aId, aBuf, aLength) otDumpWarn(aInstance, kLogRegionMle, aId, aBuf, aLength)
-#define otDumpInfoMle(aInstance, aId, aBuf, aLength) otDumpInfo(aInstance, kLogRegionMle, aId, aBuf, aLength)
-#define otDumpDebgMle(aInstance, aId, aBuf, aLength) otDumpDebg(aInstance, kLogRegionMle, aId, aBuf, aLength)
+#define otDumpCritMle(aInstance, aId, aBuf, aLength) otDumpCrit(aInstance, OT_LOG_REGION_MLE, aId, aBuf, aLength)
+#define otDumpWarnMle(aInstance, aId, aBuf, aLength) otDumpWarn(aInstance, OT_LOG_REGION_MLE, aId, aBuf, aLength)
+#define otDumpInfoMle(aInstance, aId, aBuf, aLength) otDumpInfo(aInstance, OT_LOG_REGION_MLE, aId, aBuf, aLength)
+#define otDumpDebgMle(aInstance, aId, aBuf, aLength) otDumpDebg(aInstance, OT_LOG_REGION_MLE, aId, aBuf, aLength)
 #else
 #define otDumpCritMle(aInstance, aId, aBuf, aLength)
 #define otDumpWarnMle(aInstance, aId, aBuf, aLength)
@@ -1006,10 +1006,10 @@ extern "C" {
  *
  */
 #if OPENTHREAD_CONFIG_LOG_ARP == 1
-#define otDumpCritArp(aInstance, aId, aBuf, aLength) otDumpCrit(aInstance, kLogRegionArp, aId, aBuf, aLength)
-#define otDumpWarnArp(aInstance, aId, aBuf, aLength) otDumpWarn(aInstance, kLogRegionArp, aId, aBuf, aLength)
-#define otDumpInfoArp(aInstance, aId, aBuf, aLength) otDumpInfo(aInstance, kLogRegionArp, aId, aBuf, aLength)
-#define otDumpDebgArp(aInstance, aId, aBuf, aLength) otDumpDebg(aInstance, kLogRegionArp, aId, aBuf, aLength)
+#define otDumpCritArp(aInstance, aId, aBuf, aLength) otDumpCrit(aInstance, OT_LOG_REGION_ARP, aId, aBuf, aLength)
+#define otDumpWarnArp(aInstance, aId, aBuf, aLength) otDumpWarn(aInstance, OT_LOG_REGION_ARP, aId, aBuf, aLength)
+#define otDumpInfoArp(aInstance, aId, aBuf, aLength) otDumpInfo(aInstance, OT_LOG_REGION_ARP, aId, aBuf, aLength)
+#define otDumpDebgArp(aInstance, aId, aBuf, aLength) otDumpDebg(aInstance, OT_LOG_REGION_ARP, aId, aBuf, aLength)
 #else
 #define otDumpCritArp(aInstance, aId, aBuf, aLength)
 #define otDumpWarnArp(aInstance, aId, aBuf, aLength)
@@ -1061,10 +1061,10 @@ extern "C" {
  *
  */
 #if OPENTHREAD_CONFIG_LOG_ICMP == 1
-#define otDumpCritIcmp(aInstance, aId, aBuf, aLength) otDumpCrit(aInstance, kLogRegionIcmp, aId, aBuf, aLength)
-#define otDumpWarnIcmp(aInstance, aId, aBuf, aLength) otDumpWarn(aInstance, kLogRegionIcmp, aId, aBuf, aLength)
-#define otDumpInfoIcmp(aInstance, aId, aBuf, aLength) otDumpInfo(aInstance, kLogRegionIcmp, aId, aBuf, aLength)
-#define otDumpDebgIcmp(aInstance, aId, aBuf, aLength) otDumpDebg(aInstance, kLogRegionIcmp, aId, aBuf, aLength)
+#define otDumpCritIcmp(aInstance, aId, aBuf, aLength) otDumpCrit(aInstance, OT_LOG_REGION_ICMP, aId, aBuf, aLength)
+#define otDumpWarnIcmp(aInstance, aId, aBuf, aLength) otDumpWarn(aInstance, OT_LOG_REGION_ICMP, aId, aBuf, aLength)
+#define otDumpInfoIcmp(aInstance, aId, aBuf, aLength) otDumpInfo(aInstance, OT_LOG_REGION_ICMP, aId, aBuf, aLength)
+#define otDumpDebgIcmp(aInstance, aId, aBuf, aLength) otDumpDebg(aInstance, OT_LOG_REGION_ICMP, aId, aBuf, aLength)
 #else
 #define otDumpCritIcmp(aInstance, aId, aBuf, aLength)
 #define otDumpWarnIcmp(aInstance, aId, aBuf, aLength)
@@ -1116,10 +1116,10 @@ extern "C" {
  *
  */
 #if OPENTHREAD_CONFIG_LOG_IP6 == 1
-#define otDumpCritIp6(aInstance, aId, aBuf, aLength) otDumpCrit(aInstance, kLogRegionIp6, aId, aBuf, aLength)
-#define otDumpWarnIp6(aInstance, aId, aBuf, aLength) otDumpWarn(aInstance, kLogRegionIp6, aId, aBuf, aLength)
-#define otDumpInfoIp6(aInstance, aId, aBuf, aLength) otDumpInfo(aInstance, kLogRegionIp6, aId, aBuf, aLength)
-#define otDumpDebgIp6(aInstance, aId, aBuf, aLength) otDumpDebg(aInstance, kLogRegionIp6, aId, aBuf, aLength)
+#define otDumpCritIp6(aInstance, aId, aBuf, aLength) otDumpCrit(aInstance, OT_LOG_REGION_IP6, aId, aBuf, aLength)
+#define otDumpWarnIp6(aInstance, aId, aBuf, aLength) otDumpWarn(aInstance, OT_LOG_REGION_IP6, aId, aBuf, aLength)
+#define otDumpInfoIp6(aInstance, aId, aBuf, aLength) otDumpInfo(aInstance, OT_LOG_REGION_IP6, aId, aBuf, aLength)
+#define otDumpDebgIp6(aInstance, aId, aBuf, aLength) otDumpDebg(aInstance, OT_LOG_REGION_IP6, aId, aBuf, aLength)
 #else
 #define otDumpCritIp6(aInstance, aId, aBuf, aLength)
 #define otDumpWarnIp6(aInstance, aId, aBuf, aLength)
@@ -1171,10 +1171,10 @@ extern "C" {
  *
  */
 #if OPENTHREAD_CONFIG_LOG_MAC == 1
-#define otDumpCritMac(aInstance, aId, aBuf, aLength) otDumpCrit(aInstance, kLogRegionMac, aId, aBuf, aLength)
-#define otDumpWarnMac(aInstance, aId, aBuf, aLength) otDumpWarn(aInstance, kLogRegionMac, aId, aBuf, aLength)
-#define otDumpInfoMac(aInstance, aId, aBuf, aLength) otDumpInfo(aInstance, kLogRegionMac, aId, aBuf, aLength)
-#define otDumpDebgMac(aInstance, aId, aBuf, aLength) otDumpDebg(aInstance, kLogRegionMac, aId, aBuf, aLength)
+#define otDumpCritMac(aInstance, aId, aBuf, aLength) otDumpCrit(aInstance, OT_LOG_REGION_MAC, aId, aBuf, aLength)
+#define otDumpWarnMac(aInstance, aId, aBuf, aLength) otDumpWarn(aInstance, OT_LOG_REGION_MAC, aId, aBuf, aLength)
+#define otDumpInfoMac(aInstance, aId, aBuf, aLength) otDumpInfo(aInstance, OT_LOG_REGION_MAC, aId, aBuf, aLength)
+#define otDumpDebgMac(aInstance, aId, aBuf, aLength) otDumpDebg(aInstance, OT_LOG_REGION_MAC, aId, aBuf, aLength)
 #else
 #define otDumpCritMac(aInstance, aId, aBuf, aLength)
 #define otDumpWarnMac(aInstance, aId, aBuf, aLength)
@@ -1226,10 +1226,10 @@ extern "C" {
  *
  */
 #if OPENTHREAD_CONFIG_LOG_MEM == 1
-#define otDumpCritMem(aInstance, aId, aBuf, aLength) otDumpCrit(aInstance, kLogRegionMem, aId, aBuf, aLength)
-#define otDumpWarnMem(aInstance, aId, aBuf, aLength) otDumpWarn(aInstance, kLogRegionMem, aId, aBuf, aLength)
-#define otDumpInfoMem(aInstance, aId, aBuf, aLength) otDumpInfo(aInstance, kLogRegionMem, aId, aBuf, aLength)
-#define otDumpDebgMem(aInstance, aId, aBuf, aLength) otDumpDebg(aInstance, kLogRegionMem, aId, aBuf, aLength)
+#define otDumpCritMem(aInstance, aId, aBuf, aLength) otDumpCrit(aInstance, OT_LOG_REGION_MEM, aId, aBuf, aLength)
+#define otDumpWarnMem(aInstance, aId, aBuf, aLength) otDumpWarn(aInstance, OT_LOG_REGION_MEM, aId, aBuf, aLength)
+#define otDumpInfoMem(aInstance, aId, aBuf, aLength) otDumpInfo(aInstance, OT_LOG_REGION_MEM, aId, aBuf, aLength)
+#define otDumpDebgMem(aInstance, aId, aBuf, aLength) otDumpDebg(aInstance, OT_LOG_REGION_MEM, aId, aBuf, aLength)
 #else
 #define otDumpCritMem(aInstance, aId, aBuf, aLength)
 #define otDumpWarnMem(aInstance, aId, aBuf, aLength)
@@ -1249,7 +1249,7 @@ extern "C" {
  */
 #if OPENTHREAD_ENABLE_CERT_LOG
 #define otDumpCertMeshCoP(aInstance, aId, aBuf, aLength)                    \
-    otDump(aInstance, kLogLevelNone, kLogRegionMeshCoP, aId, aBuf, aLength)
+    otDump(aInstance, OT_LOG_LEVEL_NONE, OT_LOG_REGION_MESH_COP, aId, aBuf, aLength)
 #else
 #define otDumpCertMeshCoP(aInstance, aId, aBuf, aLength)
 #endif
diff --git a/src/core/openthread-core-default-config.h b/src/core/openthread-core-default-config.h
index a0fc30e9f..e983842f6 100644
--- a/src/core/openthread-core-default-config.h
+++ b/src/core/openthread-core-default-config.h
@@ -422,7 +422,7 @@
  *
  */
 #ifndef OPENTHREAD_CONFIG_LOG_LEVEL
-#define OPENTHREAD_CONFIG_LOG_LEVEL                             OPENTHREAD_LOG_LEVEL_CRIT
+#define OPENTHREAD_CONFIG_LOG_LEVEL                             OT_LOG_LEVEL_CRIT
 #endif  // OPENTHREAD_CONFIG_LOG_LEVEL
 
 /**
diff --git a/src/core/thread/mesh_forwarder.cpp b/src/core/thread/mesh_forwarder.cpp
index 7df5e11a5..db93c93fb 100644
--- a/src/core/thread/mesh_forwarder.cpp
+++ b/src/core/thread/mesh_forwarder.cpp
@@ -2156,7 +2156,7 @@ void MeshForwarder::HandleDataPollTimeout(void *aContext)
     static_cast<MeshForwarder *>(aContext)->GetDataPollManager().HandlePollTimeout();
 }
 
-#if (OPENTHREAD_CONFIG_LOG_LEVEL >= OPENTHREAD_LOG_LEVEL_INFO) && (OPENTHREAD_CONFIG_LOG_MAC == 1)
+#if (OPENTHREAD_CONFIG_LOG_LEVEL >= OT_LOG_LEVEL_INFO) && (OPENTHREAD_CONFIG_LOG_MAC == 1)
 
 void MeshForwarder::LogIp6Message(MessageAction aAction, const Message &aMessage, const Mac::Address *aMacAddress,
                                   otError aError)
@@ -2278,12 +2278,12 @@ exit:
     return;
 }
 
-#else // #if (OPENTHREAD_CONFIG_LOG_LEVEL >= OPENTHREAD_LOG_LEVEL_INFO) && (OPENTHREAD_CONFIG_LOG_MAC == 1)
+#else // #if (OPENTHREAD_CONFIG_LOG_LEVEL >= OT_LOG_LEVEL_INFO) && (OPENTHREAD_CONFIG_LOG_MAC == 1)
 
 void MeshForwarder::LogIp6Message(MessageAction, const Message &, const Mac::Address *, otError)
 {
 }
 
-#endif //#if OPENTHREAD_CONFIG_LOG_LEVEL >= OPENTHREAD_LOG_LEVEL_INFO
+#endif //#if OPENTHREAD_CONFIG_LOG_LEVEL >= OT_LOG_LEVEL_INFO
 
 }  // namespace ot
diff --git a/src/ncp/ncp_base.cpp b/src/ncp/ncp_base.cpp
index 5f6af7387..6ea7d30e0 100644
--- a/src/ncp/ncp_base.cpp
+++ b/src/ncp/ncp_base.cpp
@@ -3443,23 +3443,23 @@ otError NcpBase::GetPropertyHandler_DEBUG_NCP_LOG_LEVEL(uint8_t header, spinel_p
 
     switch (otGetDynamicLogLevel(mInstance))
     {
-    case kLogLevelNone:
+    case OT_LOG_LEVEL_NONE:
         logLevel = SPINEL_NCP_LOG_LEVEL_EMERG;
         break;
 
-    case kLogLevelCrit:
+    case OT_LOG_LEVEL_CRIT:
         logLevel = SPINEL_NCP_LOG_LEVEL_CRIT;
         break;
 
-    case kLogLevelWarn:
+    case OT_LOG_LEVEL_WARN:
         logLevel = SPINEL_NCP_LOG_LEVEL_WARN;
         break;
 
-    case kLogLevelInfo:
+    case OT_LOG_LEVEL_INFO:
         logLevel = SPINEL_NCP_LOG_LEVEL_INFO;
         break;
 
-    case kLogLevelDebg:
+    case OT_LOG_LEVEL_DEBG:
         logLevel = SPINEL_NCP_LOG_LEVEL_DEBUG;
         break;
     }
@@ -5988,25 +5988,25 @@ otError NcpBase::SetPropertyHandler_DEBUG_NCP_LOG_LEVEL(uint8_t header, spinel_p
         {
         case SPINEL_NCP_LOG_LEVEL_EMERG:
         case SPINEL_NCP_LOG_LEVEL_ALERT:
-            logLevel = kLogLevelNone;
+            logLevel = OT_LOG_LEVEL_NONE;
             break;
 
         case SPINEL_NCP_LOG_LEVEL_CRIT:
-            logLevel = kLogLevelCrit;
+            logLevel = OT_LOG_LEVEL_CRIT;
             break;
 
         case SPINEL_NCP_LOG_LEVEL_ERR:
         case SPINEL_NCP_LOG_LEVEL_WARN:
-            logLevel = kLogLevelWarn;
+            logLevel = OT_LOG_LEVEL_WARN;
             break;
 
         case SPINEL_NCP_LOG_LEVEL_NOTICE:
         case SPINEL_NCP_LOG_LEVEL_INFO:
-            logLevel = kLogLevelInfo;
+            logLevel = OT_LOG_LEVEL_INFO;
             break;
 
         case SPINEL_NCP_LOG_LEVEL_DEBUG:
-            logLevel = kLogLevelDebg;
+            logLevel = OT_LOG_LEVEL_DEBG;
             break;
 
         default: