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Using an Unsupported Modem with Windows NT RAS

Summary: Some modems that are not listed on the Windows NT Hardware Compatibility List (HCL) can still be used successfully with Windows NT Remote Access Service (RAS).

More Information:

Microsoft does not guarantee the functionality of hardware not present in the most recent version of the Windows NT HCL; however, one of the following workarounds may allow you to use an unsupported modem with Windows NT RAS. Provided by Microsoft