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Q312284: A Direct RAS Connection on a Serial Cable Always Uses 1 Stop Bit

Article: Q312284
Product(s): Microsoft Windows NT
Version(s): 4.0
Operating System(s): 
Keyword(s): kbnetwork kbWinNT400nospFix
Last Modified: 08-MAY-2002

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The information in this article applies to:

- Microsoft Windows NT Server version 4.0 
- Microsoft Windows NT Workstation version 4.0 
- Microsoft Windows NT Server, Enterprise Edition version 4.0 
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SYMPTOMS
========

A direct Remote Access Service (RAS) connection over a null-modem serial cable
may not connect if one of the devices is not running Windows NT 4.0, and if the
connection is not set to use one stop bit.

CAUSE
=====

RAS Manager is designed to use one stop bit for direct cable connections, no
matter what settings you configure.

RESOLUTION
==========

A supported fix is now available from Microsoft, but it is only intended to
correct the problem described in this article and should be applied only to
systems experiencing this specific problem.

To resolve this problem, contact Microsoft Product Support Services to obtain the
fix. For a complete list of Microsoft Product Support Services phone numbers and
information on support costs, please go to the following address on the World
Wide Web:

  http://support.microsoft.com/default.aspx?scid=fh;EN-US;CNTACTMS

NOTE: In special cases, charges that are normally incurred for support calls may
be canceled, if a Microsoft Support Professional determines that a specific
update will resolve your problem. Normal support costs will apply to additional
support questions and issues that do not qualify for the specific update in
question.

The English version of this fix should have the following file attributes or
later:

  Date         Time   Version        Size     File name     Platform
  ------------------------------------------------------------------
  24-Sep-1999  03:54  4.0.1381.7001  198,416  Rasapi32.dll  Alpha
  24-Sep-1999  03:54  4.0.1381.7001   71,440  Rastapi.dll   Alpha
  24-Sep-1999  03:55  4.0.1381.7001  127,760  Rasapi32.dll  i386
  24-Sep-1999  03:55  4.0.1381.7001   35,600  Rastapi.dll   i386

NOTE: Because of file dependencies, this hotfix requires Microsoft Windows NT 4.0
Service Pack 6a.



WORKAROUND
==========

To work around this problem, configure both computers on the direct RAS
connection to use one stop bit.

STATUS
======

Microsoft has confirmed this to be a problem in the Microsoft products that are
listed at the beginning of this article.

Additional query words:

======================================================================
Keywords          : kbnetwork kbWinNT400nospFix 
Technology        : kbWinNTsearch kbWinNTWsearch kbWinNTW400 kbWinNTW400search kbWinNT400search kbWinNTSsearch kbWinNTSEntSearch kbWinNTSEnt400 kbWinNTS400search kbWinNTS400
Version           : :4.0
Hardware          : ALPHA x86
Issue type        : kbbug
Solution Type     : kbfix

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