Microsoft KB Archive/250648

= Description of the Modem Responses Key in the Windows Me/98/95 Registry =

Article ID: 250648

Article Last Modified on 1/27/2007

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APPLIES TO


 * Microsoft Windows Millennium Edition
 * Microsoft Windows 98 Second Edition
 * Microsoft Windows 98 Standard Edition
 * Microsoft Windows 95

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This article was previously published under Q250648



SUMMARY
This article describes the following modem Responses key in the Windows Millennium Edition (Me), Windows 98, or Windows 95 registry:

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Class\Modem\xxxx\Responses



MORE INFORMATION
The Responses key contains strings that the modem might report to Windows Me/98/95 in response to a command or during the connection process. The name of each subkey is the text of a single modem response, and its data is a 10-byte binary value specifying the meaning of the response to Windows in a coded format. The first two characters (byte 0) specify the meaning of the response code, using one of the following values:

NOTE: The 1C and ID values are not included in Windows 95.

The second two characters (byte 1) specify information about a connection that is being made. It is used only for response codes of Negotiation Progress or Connect types, and is one of the following values:

The next eight characters (bytes 2-5) specify the modem-to-modem line speed negotiated in bits per second (bps). The characters represent a 32-bit integer, doubleword format (byte and word reversed). Common examples for this value include the following:

The last eight characters (bytes 6-9) indicate that the modem is changing to a different port or Data Terminal Equipment (DTE) speed. Usually, this field is not used, because modems make connections at a "locked" port speed, regardless of the modem-to-modem or Data Communications Equipment (DCE) speed. However, for modems that support only "direct" modes, you can lower the DTE speed by specifying a negotiated DTE speed for a response code, using the same format as the DCE speed described in the preceding table.

Keywords: kbinfo KB250648

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