Microsoft KB Archive/124075

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TAPI Apps Can't Dial Unless UniModem Is First Listed Provider

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Q124075

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The information in this article applies to:


 * Microsoft Windows 95

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SYMPTOMS
HyperTerminal, the Microsoft Network, or another TAPI-enabled application does not dial.

CAUSE
This problem occurs when a pre-Windows 95 service provider appears in the TELEPHON.INI file and precedes the Windows 95 Universal Modem Driver (UNIMDM). A pre-Windows 95 service provider is one that was built to the Windows 3.1 TAPI, rather than the Windows 95 TAPI.

WORKAROUND
To work around this problem, perform the following steps:

 Open the TELEPHON.INI file that is in your Windows directory with a text editor (such as WordPad).  The Providers section may appear as follows:      [Providers] NumProviders=2 NextProviderID=3 ProviderID0=1 ProviderFilename0=ATSP.TSP ProviderID1=2 ProviderFilename1=UNIMDM.TSP Change the above to:      [Providers] NumProviders=2 NextProviderID=3 ProviderID1=1 ProviderFileName1=ATSP.TSP ProviderID0=2 ProviderFileName0=UNIMDM.TSP 

The above changes inform the TAPI.DLL file that UniModem is the first provider.

MORE INFORMATION
Windows Telephony application programming interface (TAPI) is the API that allows your computer to manage your telephone system (data, fax, and voice).

Additional query words: msnetwork hyperterm

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Issue type :

Technology : kbWin95search kbWin95