diff --git a/en/device-dev/subsystems/subsys-tel-guide.md b/en/device-dev/subsystems/subsys-tel-guide.md
index 889f2b8c452ef67da653750c2806c71f4ecfc2dd..62142ff914cb16d6ab9a9728727838d6b2b0ccf9 100644
--- a/en/device-dev/subsystems/subsys-tel-guide.md
+++ b/en/device-dev/subsystems/subsys-tel-guide.md
@@ -107,7 +107,7 @@ The following table describes the API for initializing a modem vendor library.
 
 ### Debugging and Verification<a name="section5351151517132"></a>
 
-1.  Use the [hdc\_std](https://gitee.com/openharmony/docs/blob/master/en/device-dev/subsystems/subsys-toolchain-hdc-guide.md#preparations) tool to connect to a debugging device. Then, run the following command to send the generated **libril\_vendor.z.so** library file to the **/system/lib/** directory of the device. For details about how to integrate a library file, see  [Integrating Modem Vendor Libraries](#section590mcpsimp).
+1.  Use the [hdc\_std](../subsystems/subsys-toolchain-hdc-guide.md#preparations) tool to connect to a debugging device. Then, run the following command to send the generated **libril\_vendor.z.so** library file to the **/system/lib/** directory of the device. For details about how to integrate a library file, see  [Integrating Modem Vendor Libraries](#section590mcpsimp).
 
     ```
     hdc_std file send libril_vendor.z.so /system/lib/
@@ -202,7 +202,7 @@ The following table describes the APIs for responding to modem service requests,
 
 ### Debugging and Verification<a name="section10207938171413"></a>
 
-1.  Use the [hdc\_std](https://gitee.com/openharmony/docs/blob/master/en/device-dev/subsystems/subsys-toolchain-hdc-guide.md#preparations) tool to connect to a debugging device. Then, run the following command to send the generated **libril\_vendor.z.so** library file to the **/system/lib/** directory of the device.
+1.  Use the [hdc\_std](../subsystems/subsys-toolchain-hdc-guide.md#preparations) tool to connect to a debugging device. Then, run the following command to send the generated **libril\_vendor.z.so** library file to the **/system/lib/** directory of the device.
 
     ```
     hdc_std file send libril_vendor.z.so /system/lib/
@@ -326,7 +326,7 @@ The following table describes the API for reporting modem events.
 
 ### Debugging and Verification<a name="section16999174401516"></a>
 
-1.  Use the [hdc\_std](https://gitee.com/openharmony/docs/blob/master/en/device-dev/subsystems/subsys-toolchain-hdc-guide.md#preparations) tool to connect to a debugging device. Then, run the following command to send the generated **libril\_vendor.z.so** library file to the **/system/lib/** directory of the device.
+1.  Use the [hdc\_std](../subsystems/subsys-toolchain-hdc-guide.md#preparations) tool to connect to a debugging device. Then, run the following command to send the generated **libril\_vendor.z.so** library file to the **/system/lib/** directory of the device.
 
     ```
     hdc_std file send libril_vendor.z.so /system/lib/