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/*++ BUILD Version: 0001 // Increment this if a change has global effects
Copyright (c) 1995 Microsoft Corporation
Module Name:
ntddmodm.h
Abstract:
This is the include file that defines all constants and types for
accessing the modem device.
Author:
Tony Ercolano (tonye) 14-Jul-1995
Revision History:
--*/
//
// NtDeviceIoControlFile IoControlCode values for this device.
//
#define IOCTL_MODEM_GET_PASSTHROUGH CTL_CODE(FILE_DEVICE_MODEM, 1,METHOD_BUFFERED,FILE_ANY_ACCESS)
#define IOCTL_MODEM_SET_PASSTHROUGH CTL_CODE(FILE_DEVICE_MODEM, 2,METHOD_BUFFERED,FILE_ANY_ACCESS)
#define MODEM_NOPASSTHROUGH 0x00000000U
#define MODEM_PASSTHROUGH 0x00000001U
#define MODEM_DCDSNIFF 0x00000002U
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