diff --git a/include/etif_detail.h b/include/etif_detail.h
new file mode 100644
index 0000000..c188b10
--- /dev/null
+++ b/include/etif_detail.h
@@ -0,0 +1,27 @@
+#ifndef _INCLUDE_EXTERN_INTERFACE_DETAIL_H_
+#define _INCLUDE_EXTERN_INTERFACE_DETAIL_H_
+
+#include <stdint.h>
+#include "extern_interface.h"
+
+#define PrintFilePos()
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void handle_pack(uint32_t type, size_t len, union PacketData data);
+void get_telemetry_data(struct TelemetryRequestData* data);
+
+void* telemetry_host_com_thread(void* args);
+void* upper_host_com_thread(void* arg);
+
+extern int g_iHostCom_tty_id;
+extern int g_iEnableAlarmCode;
+extern uint8_t g_iAlarmCode[4];
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/include/extern_interface.h b/include/extern_interface.h
index 3ecfc25..f0d63fc 100644
--- a/include/extern_interface.h
+++ b/include/extern_interface.h
@@ -12,6 +12,8 @@
 #define ET_TYPE_ALARM 4
 #define ET_TYPE_TELEMETRY_REQUEST 5
 
+#define ET_SYS_STATUS_WAKE 1
+
 #if defined(_MSC_VER)
 #define EXTERN_INTERFACE_PUBLIC __declspec(dllexport)
 #elif defined(__GNUC__)
@@ -28,7 +30,7 @@ struct TelemetryRequestData {
     int sys_state;
     bool volume_key_pressed;
     bool wakeup_key_pressed;
-    int volume_grade;
+    int volume_grade;   // 0, 1, 2
     int sys_ver_high;
     int sys_ver_low;
     int app_ver_high;
diff --git a/src/extern_interface.cpp b/src/extern_interface.cpp
index 0f9b38f..c3e6bdf 100644
--- a/src/extern_interface.cpp
+++ b/src/extern_interface.cpp
@@ -1,5 +1,5 @@
 #include <pthread.h>
-#include "extern_interface.h"
+#include "etif_detail.h"
 #include "event.h"
 #include "inicpp.hpp"
 
@@ -13,6 +13,8 @@ int extern_interface_init(const char* config_path, et_callback_t cb) {
     et_callback = cb;
 
     pthread_create(&event_thread, NULL, sys_event_thread, NULL);
+    pthread_create(&upperhost_thread, NULL, upper_host_com_thread, NULL);
+    pthread_create(&telemetry_thread, NULL, telemetry_host_com_thread, NULL);
 }
 
 void extern_interface_send(uint32_t type, size_t len, union PacketData data) {
@@ -28,10 +30,10 @@ void extern_interface_send(uint32_t type, size_t len, union PacketData data) {
     }
 }
 
-void extern_interface_handle(uint32_t type, size_t len, union PacketData data) {
+void handle_pack(uint32_t type, size_t len, union PacketData data) {
     et_callback(type, len, data);
 }
 
-void get_telemetry_request_data(TelemetryRequestData* data) {
-    extern_interface_handle(ET_TYPE_TELEMETRY_REQUEST, sizeof(TelemetryRequestData), { .pd_pointer = data });
+void get_telemetry_data(TelemetryRequestData* data) {
+    handle_pack(ET_TYPE_TELEMETRY_REQUEST, sizeof(TelemetryRequestData), { .pd_pointer = data });
 }
diff --git a/src/host_com.cpp b/src/host_com.cpp
index da1b663..913fceb 100644
--- a/src/host_com.cpp
+++ b/src/host_com.cpp
@@ -5,6 +5,7 @@
 #include "telemetry.h"
 #include "dataqueue.hpp"
 #include "command.h"
+#include "etif_detail.h"
 
 #define PrintFilePos()
 
@@ -25,22 +26,24 @@ volatile int32_t g_iMS2Reboot = 1000;
 
 /* create a msg data for upper host telemetry*/
 void set_telemetry_host_data(TelemetryData4UpperHost* pTelemetryData) {
+    TelemetryRequestData data;
+    get_telemetry_data(&data);
     pTelemetryData->work_status = 0xAA;
     pTelemetryData->com_status = 0xAA;
     pTelemetryData->coprocessor1_status = 0xAA;
     pTelemetryData->coprocessor2_status = 0xAA;
     pTelemetryData->voice_circuit_status = 0xAA;
     pTelemetryData->telemetry_count = g_iUpperHostTelemetryCount++;
-    if (g_bCloseASR) {
+    if (data.close_asr) {
         pTelemetryData->voice_mode = 0xAA;
     }
-    else if (g_iSysState == SYS_STATUS_WAKE) {
+    else if (data.sys_state == ET_SYS_STATUS_WAKE) {
         pTelemetryData->voice_mode = 0x55;
     } 
     else {
         pTelemetryData->voice_mode = 0xA5;
     }
-    if (g_iSysState == SYS_STATUS_WAKE) {
+    if (data.sys_state == ET_SYS_STATUS_WAKE) {
         pTelemetryData->recognition_status = 0x55;
     }
     else {
@@ -75,25 +78,15 @@ void set_telemetry_host_data(TelemetryData4UpperHost* pTelemetryData) {
     //}
     //pTelemetryData->volume_key_status = g_bVolumeKeyState ? 0xAA : 0x55;
     //pTelemetryData->wake_key_status = g_bWakeupKeyState ? 0xAA : 0x55;
-    pTelemetryData->volume_key_status = g_bVolumeKeyPressed ? 0xAA : 0x55;
-    pTelemetryData->wake_key_status = g_bWakeupKeyPressed ? 0xAA : 0x55;
-    g_bVolumeKeyPressed = false;
-    g_bWakeupKeyPressed = false;
+    pTelemetryData->volume_key_status = data.volume_key_pressed ? 0xAA : 0x55;
+    pTelemetryData->wake_key_status = data.wakeup_key_pressed ? 0xAA : 0x55;
 
     pTelemetryData->key_status_backup = 0x55;
-    if ( g_iCurVolumeGrade == g_iVolumeGradeCnt-1 ) {//large
-        pTelemetryData->current_volume = 0x3;
-    }
-    else if ( g_iCurVolumeGrade == 0 ) {//small
-        pTelemetryData->current_volume = 0x1;
-    }
-    else {//midium
-        pTelemetryData->current_volume = 0x2;
-    }
-    pTelemetryData->system_version_high = g_iSysVerHigh;
-    pTelemetryData->system_version_low = g_iSysVerLow;
-    pTelemetryData->application_version_high = g_iAppVerHigh;
-    pTelemetryData->application_version_low = g_iAppVerLow;
+    pTelemetryData->current_volume = data.volume_grade;
+    pTelemetryData->system_version_high = data.sys_ver_high;
+    pTelemetryData->system_version_low = data.sys_ver_low;
+    pTelemetryData->application_version_high = data.app_ver_high;
+    pTelemetryData->application_version_low = data.app_ver_low;
     // 2024.10.10
     if (g_iEnableAlarmCode == 0) {
         pTelemetryData->alarm_code[0] = 0xAA;