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666 - Your modem (or other connecting device) is not functioning.

Applies to Windows 95 & 98:

The telephon.ini file in your \%systemroot%\ folder may be corrupted, missing or damaged. Locate and rename the telephon.ini file to telephon.old.
(%systemroot% is normally c:\windows.)

Re-start your computer and then run the tapiini.exe file located in the \windows\system folder.

Additional information on the telephon.ini file: MS KB Article 120221

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