Category Archives: SMS Modem


Renaming “Sierra Wireless” in COM Ports

Objective: to use AT command to rename “Sierra Wireless” to “MOBITEK” so that all the 4 COM ports will display “MOBITEK”


Result: after using the “AT+WUSB” to change name to “MOBITEK”, the 4 COM ports in device manager still show  as “Sierra Wireless” .


In addition, there is no AT command to remove the other 3 COM ports, “CNS”, ‘DM” & “NMEA”

USB Drivers of FX30 and MOBITEK S80 Have Conflict — Bad_pool_caller

Problem: the USB Drivers for both FX30 and MOBITEK S80 cannot be installed in the same machine. Otherwise the below blue screen error will appear when trying to connect MOBITEK S80 3G Modem to the PC/machine.


Solutions: there are 3 solutions to choose:

  1. reboot Windows into “last known good configuration” (source:;
  2. run system restore to restore Windows to the a date before FX30 USB driver was installed; or
  3. uninstall FX30 USB driver.

How to Set-Up MOBITEK S80 SMS Modem with WinPower UPS software

Applies to:

MOBITEK® S80 for SMS Over 3G Network


  1. Connect your laptop/desktop to UPS and MOBITEK S80 Modem to laptop/desktop. Open Winpower UPS software. Go to System menu -> Act as Administrator and enter the password. The default password is “Administrator“. This step is important in order to configure Winpower software setting.

    To change the administrator password (optional), go to System menu -> Modify Administrator Password and enter the new password for administrator.
  2. Go to System menu -> Auto Search Device to search for UPS device automatically.

    Wait for the UPS to be searched.

    When found, the UPS device will be shown in the list. Double-click on it to see the UPS device status.
  3. Go to Tools menu -> SMS Setting to configure the SMS notification for UPS events.
  4. In SMS Setting, set the Com Port for MOBITEK S80 Modem, the Baud Rate to “115200“, and the Format of phone number to “Without National Code“. Enter the phone number for the notification to be sent, click Add button and select the phone number in the list. After that select the abnormal event in the event list that you want to be notified for. Click Test button to test the SMS sent successfully or not. If successful, click OK button.

How to Solve SMS Engine Fails to Initialize Despite Hyper Terminal Can Communicate with MobiGATE

Applies to:

  • All SDK (SMS API, STK API, etc.)
  • all versions of SMS Engine — Enterprise Edition

Cause: “MSComm32.ocx” did not install properly or the date of the file is incorrect. This occur when MOBITEK SMS Engine — Enterprise Edition has been reinstalled a few times on the same Windows machine.


  1. Uninstall MOBITEK SMS Engine — Enterprise Edition.
  2. Unregister “MSComm32.ocx”:
    1. for Windows 64-bit, run “cmd” or “Command Prompt” as “administrator”, then type
      1. “cd %systemroot%\SysWoW64\
      2. regsvr32.exe /u mscomm32.ocx
    2. for Windows 32-bit, goto Start → Run → type “regsvr32 /u mscomm32.ocx”
  3. Delete “MSComm32.ocx”.
  4. Re-install SMS Engine — Enterprise Edition.


  1. Unregister the “MSComm32.ocx” and delete it
    1. for Windows 64-bit, run “cmd” or “Command Prompt” as “administrator”, then type:
      1. cd %systemroot%\SysWoW64\
      2. regsvr32 /u mscomm32.ocx
    2. for Windows 32-bit, goto Start Run  type “regsvr32 /u mscomm32.ocx
  2. Copy the new “MSComm32.ocx” and manually register it:
    1. for Windows 64-bit, run “cmd” or “Command Prompt” as “administrator”, then type:
      1. “cd %systemroot%\SysWoW64\
      2. regsvr32 mscomm32.ocx
    2. for Windows 32-bit, goto Start Run type “regsvr32 mscomm32.ocx



Set-up Guide for MOBITEK S80 on LAN

Objective: to set-up MOBITEK® S80 to operate on local area network (LAN) via LAN port.

Applies to:-

  • MOBITEK® S80 SMS Modem Type S-L
  • MOBITEK® S80 3G Modem Type E-L

MOBITEK® S80 for SMS Over 3G Network


How to Configure LAN Port of MOBITEK® S80

There are 2 tasks:-

  1. How to Assign/Change IP Address of MOBITEK® S80
    1. IP address has to be assigned to the modem
  2. How to Add A COM Port for MOBITEK® S80
    1. on PC/server, a new COM port has to be added and mapped to the IP address of the modem


How to Assign/Change IP Address of MOBITEK® S80

  1. Connect the LAN  (ethernet) cable to the modem and the other end to your router or switch.
  2. Connect power adapter to the modem, turn on the power.
  3. Run the Windows application “USR-TCP232-T24-V5.1.1.20.exe“.
  4. Click “Search in LAN”.
  5. It will look for the IP address of MOBITEK® S80, if found it will display the address. In this example it is
  6. Click the “Device list in the net” , make the following changes in the “Parameters” section:-
    1. set to “TCP Server”;
    2. change the IP address in “Module IP” that matches your LAN, the IP address is for MOBITEK® S80 (e.g.;
    3. change the “Default Gateway” that matches the IP address of your router (e.g.;
    4. optional — change “Module port”;
  7. Finally, click “Set selected item via Net” or “Set selected item via LAN” to save changes.
  8. Exit the Windows application “USR-TCP232-Setup”.


How to Add A COM Port for MOBITEK® S80

  1. In Windows PC/Server, install “USR-VCOM” then run it.
  2. Click “Smart Vcom” (you must first exit “USR-TCP232-Setup”, otherwise an error message “Search port 1901 is occupied” will appear):
  3. If MOBITEK® S80 is found, it will be displayed. Check it then click “Next” to create COM port.
  4. A new COM port number will be created under “COM Name”, in this example it is 1.
  5. Also the COM port number can also be seen either in “Device Manager -> Ports”
    or in  “Device Manager -> Virtual Serial Ports (Eltima Software)”. COM port number will be displayed.
  6. “Net State” will show “Connected”.
  7. Your application will communicate with MOBITEK® S80 via the above COM port number.
  8. When your application is connected to MOBITEK® S80  then “COM State” will show “Open”.
  9. When your application is communicating with MOBITEK® S80 to send and read SMS, the values in “COM Received” and “Net Received” will be increasing.
  10. Ensure “USR-VCOM” is set to “AutoRun” (red box) and ensure it is running, otherwise SMS application is unable to connect to MOBITEK® S80 Modem:


Appendix: Using “Search” to Find the IP address of MOBITEK S80

  1. If “Smart VCOM” fail to work, then use “Search” function. Select “USR-TCP232-T24”:
  2. If modem is found, it will list the IP address of modem:
  3. Click “Connect Virtual COM” to create a COM port:
  4. Select a COM port for the modem (e.g. COM20), and select “TCP Client”:
  5. MOBITEK® S80 Modem is connected to COM port number 20.