Microsoft KB Archive/250647

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Description of the Modem Init Key in the Windows 98/95 Registry

Article ID: 250647

Article Last Modified on 1/27/2007


  • Microsoft Windows 98 Standard Edition
  • Microsoft Windows 98 Second Edition
  • Microsoft Windows 95

This article was previously published under Q250647


This article describes the following Modem Init key in the Windows 98/95 registry:

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Class\Modem\four-digit number\Init

NOTE: For each installed modem, Windows creates one registry key, four-digit number, starting with \0000.


The multiple modem-command string entries in the Init key initialize the modem before Windows uses it. The name of each entry is its sequence number, starting with the number 1, and its data is the command that is sent to the modem.

Usually, the Init key entry "1" is AT<cr>, which starts the modem.

Init entry "2" usually contains &F or a similar command to restore the modem to its default settings.

Subsequent Init key entries contain miscellaneous commands to configure the modem so it is compatible with Windows.

Keywords: kbenv kbinfo KB250647