Why the xPortalNet Software Cannot Send SMS Notification Message After the Configured Event was Triggered

During a test, the xPortalNet Comm Server software prompted the following error message to indicate that the "SMS could not be sent. GSM Modem communication failure! Cannot open serial port: COM6"
 
Figure 1: SMS Could Not be Sent Error Message

This issue typically  happens after the D-Link Connection Manager software of the 4G LTE USB modem is running.
 
Figure 2: D-Link Connection Manager Running Icon

Summary:

• To confirm the com port number of 4G LTE USB modem.

• To validate the D-Link 4F LTE USB model and SIM is activate.

• To ensure the D-Link Connection Manager software is not running.

• To validate notify user able receive send test SMS from xPortalNet.

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Step-by-step Guide:

• To confirm the com port number of 4G LTE USB modem:

Step 1: Plug in the D-Link 4G LTE USB modem. Type Device Manager in the search bar on the Windows taskbar and click Device Manager in the search result.
 
Figure 3: Device Manager Icon in the Search Result

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Step 2: The Device Manager window will be shown as below. Select and expand the Ports (COM & LPT). From the information provided by the Device Manager, the D-Link HS-USB AT Port is using COM6 port for communication.
 
Figure 4: Device Manager Window Showing the Port which the D-Link HS-USB AT Port is Connected

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Step 3: Close the Device Manager window.

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Step 4: Got xPortalNet Server > Server Admin > select System Properties.
 
Figure 5: System Properties in the Server Admin Menu

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Step 5: The System Properties window will be shown. Click on Email & SMS tab.
 
Figure 6: Email & SMS Tab in System Properties Window

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Step 6: The Email & SMS tab will then be shown. Confirm that the configuration for the GSM Modem Comm Port field is the same as the COM number for the D-Link HS-USB AT as shown in Device Manager window in Step 2.
 
Figure 7: GSM Modem Comm Port Field in Email & SMS Tab

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Step 7: Click Close to exit from the System Properties window.

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• To validate the model of the D-Link 4G LTE USB modem and that the SIM is activated:

Step 1: Open the D-Link Connection Manager software as shown.
 
Figure 8: D-Link Connection Manager Software

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Step 2: Next, check the network signal and that the connection status is ready.
 
Figure 9: Network Signal and Connection Status in D-Link Connection Manager Software

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Step 3: Click Close to close the D-Link Connection Manager.

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• To ensure the D-Link Connection Manager software is not running:

Step 1: Go to Task Manager > Processes > expand Background processes and search for D-Link Connection Manager application.
 
Figure 11: Connection Manager Application in Task Manager

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Step 2: Select Connection Manager application and click End task.
 
Figure 12: Ending the Connection Manager Application Task

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Step 3: Close the Task Manager.

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• To verify that user is able to receive test SMS from xPortalNet:

Step 1: Close xPortalNet Server & Client software. Go to the xPortalNet Service icon at the task bar and restart the xPortalNet Service.
 
Figure 13: Restarting xPortalNet Service

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Step 2: Please wait a moment to complete the process of restarting the xPortalNet service.

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Step 3: Mouse over the xPortalNet Service icon to confirm that the xPortalNet Comm Services Status is shown as Running
 
Figure 14: xPortalNet Comm Service Status is Shown as Running

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Step 4: Login to xPortalNet Server. The xPortalNet Comm Server window will be shown. Once the GSM Modem is connected, the software will record the GSM Modem Connected transaction in Latest All Activities List.
 
Figure 15: GSM Modem Connected Transaction

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Step 5: Go to Server Admin > select Notify User.
 
Figure 16: Notify User in Server Admin Menu

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Step 6: The Notification Setup window will be shown. Select one of the user IDs for testing.
 
Figure 17: Selecting One of the User ID for Testing

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Step 7: The Edit Notification window will be shown. Click Test Send for testing.
 
Figure 18: Sending the Test SMS in Edit Notification Window

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Step 8: The xPortalNet Comm Server will prompt a message to indicate that the SMS was sent successfully, click OK to close.
 
Figure 19: SMS Was Sent Successfully Message

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Step 9: User will then receive the SMS message in the mobile phone to indicate the SMS is for testing purpose.
 
Figure 20: Test SMS from xPortalNet