Digiboard Doesn't Completely Release Modem After Using NET2COM (108243)


The information in this article applies to:

  • Microsoft Windows NT Server 3.1
  • Microsoft Windows NT Workstation 3.1
This article was previously published under Q108243

SYMPTOMS

The Digiboard intelligent serial port models 16EM and C\CON16 do not hang up after using the NET2COM modem sharing utility under Windows NT.

CAUSE

The NetBIOS modem sharing utility, NET2COM which is shipped with the Windows NT resource kit does not hang up and release the modem properly when they are connected to models 16EM and C\CON16 intelligent serial port system from Digiboard. Because the NET2COM utility uses WINVTP and NETBIOS commands to send the AT strings to and from the modem, the Digiboard does not handle the hang up and modem reset string properly. Therefore, never reset the modem after you hang up.

RESOLUTION

To use the modem again, the modem must be manually reset or turned off and then turned back on again.

MORE INFORMATION

Steps to Reproduce Problem

  1. Install a 16EM or C\CON16 from Digiboard under Windows NT.
  2. Connect a modem to one of the ports on the Digiboard.
  3. Install the Windows NT Resource Kit and properly configure NET2COM.
  4. Go to another machine on the network and use WinVTP to connect to the computer that is sharing the modem using the Digiboard.
  5. Dial out using the Atdt command.
  6. Select File from the WinVTP menu and hang up from the shared modem.
  7. Try reconnecting back to the modem.
The modem connected to the Digiboard appears to still be in use even after your WinVTP session has released it.

The Digiboard products included here are manufactured by a vendor independent of Microsoft; we make no warranty, implied or otherwise, regarding these products' performance or reliability.
Modification Type:MajorLast Reviewed:11/4/2003
Keywords:kbHardware KB108243
©2003 Microsoft Corporation. All rights reserved.