ActiveXperts Knowledge Base Article 7521030

Q7521030 - When I send a test SMS message using my GSM modem, I get the following error: 30201. What does it mean?

This means that the Windows Telephony Device you are using, is NOT defined on the computer. You may have made a typing mistake. Error 11201 does NOT mean that the port is already in use (you would get error 11202).
You will never get this error when using direct COM ports (like 'COM1'), but only when using Windows Telephony devices.


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