Digiboard Drops DTR After Disconnect

 Last reviewed: August 23, 1996
Article ID: Q132111
The information in this article applies to:
  • Microsoft Windows NT operating system version 3.5
  • Microsoft Windows NT Advanced Server version 3.5

SYMPTOMS

When a client disconnects from a RAS server, the DTR line on the Digiboard COM port may not return. Because the modem is not reset, not additional calls can come in on that port. If a client attempts to dial in, the modem picks up the line, but the RAS server does not respond. As a result, the client receive a 640 error message. The RAS server does not log any errors in the event log, but the RAS Administrators tool show that the port has been disconnected and is not ready.

These symptoms will appear only after the RAS server has been in operation for some time. Stress tests indicate that several hundred inbound calls are needed to produce the problem.

CAUSE

There is a problem in the Digiboard DIGIFEP5.SYS driver.

STATUS

Microsoft has confirmed this to be a problem Windows NT version 3.5. We are researching this problem and will post new information in the Microsoft Knowledge Base as it becomes available.

This problem was corrected in Windows NT version 3.51.

KBCategory: kbnetwork kbbug3.50 kbfix3.51
KBSubcategory: ntras NTSrvWkst
Additional reference words: prodnt 3.50

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Last reviewed: August 23, 1996
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