Microsoft KB Archive/170205

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Windows NT 4.0 RAS Support for 3Com Impact ISDN Modems

Article ID: 170205

Article Last Modified on 10/31/2006


  • Microsoft Windows NT Server 4.0 Standard Edition
  • Microsoft Windows NT Workstation 4.0 Developer Edition

This article was previously published under Q170205


3Com manufacturers the Impact ISDN modem, which is not listed in the current Windows NT Hardware Compatibility List (HCL). However, 3Com provides software that allows you to use the ISDN modem with Windows NT 4.0 Remote Access Service (RAS).

For information about non-HCL hardware support, see the following article in the Microsoft Knowledge Base:

142865 Microsoft Support Policy on Hardware Not On Windows NT HCL


You can use the following 3Com ISDN products with Windows NT 4.0:

  • 3C871

  • 3C872

  • 3C882

To use these products with RAS, follow the directions in the manual shipped with the 3Com Impact modem, or obtain the directions from 3Com's Web site:

Additional support tips for the External 3Com Impact ISDN Modem are available on 3Com's Web site at the following address:

The 3Com products discussed here are manufactured by 3Com, Inc., a vendor independent of Microsoft; we make no warranty, implied or otherwise, regarding these products' performance or reliability.

The third-party contact information included in this article is provided to help you find the technical support you need. This contact information is subject to change without notice. Microsoft in no way guarantees the accuracy of this third-party contact information.

Keywords: kb3rdparty kbinterop kbnetwork KB170205