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NDIS_TAPI_GET_DEV_CAPS

  • Article

The NDIS_TAPI_GET_DEV_CAPS structure is used by OID_TAPI_GET_DEV_CAPS when it requests the miniport driver to return the telephony capabilities of a specified line device. The returned information is valid for all addresses on the given line device.

Support for this request is mandatory.

typedef struct _NDIS_TAPI_GET_DEV_CAPS { 
  ULONG ulRequestID; 
  ULONG ulDeviceID; 
  ULONG ulExtVersion; 
  LINE_DEV_CAPS LineDevCaps; 
} NDIS_TAPI_GET_DEV_CAPS, *PNDIS_TAPI_GET_DEV_CAPS;

Members

  • ulRequestID
    [in] Reserved.

  • ulDeviceID
    [in] Specifies the link or data channel to be queried. This was set up in a preceding OID_TAPI_GET_ID request.

  • ulExtVersion
    [in] Specifies the negotiated extension version number, if any.

    The value has already been negotiated for this device through the OID_TAPI_NEGOTIATE_EXT_VERSION request. The value of this member is not validated when this request is made.

  • LineDevCaps
    [out] Specifies the virtual address of a variable-size structure of type LINE_DEV_CAPS.

    The NIC driver fills this structure with line device capabilities information to complete this request successfully.

    The structure at LineDevCaps has at least sizeof(LINE_DEV_CAPS) bytes reserved.

    The supplied provider information in the dwProviderInfoOffset member of LINE_DEV_CAPS must have the following format:

    • MediaName\0ProviderName\0
      where
      MediaName is ISDN, SW56, FrameRelay, and so forth, as appropriate. MediaName can also specify the type of device, such as RASDT_Direct (L"direct"), RASDT_Modem (L"modem"), or RASDT_Vpn (L"vpn")
      and
      ProviderName is the name of the manufacturer of the device and the unique name of the device, if any.
    • For example, the driver of an ISDN device from SomeIHV Inc. would set the dwProviderInfoOffset member with a pointer to the string "ISDN\0SomeIHV\0"

Remarks

The MiniportQueryInformation function can return one of the following:

  • NDIS_STATUS_SUCCESS
  • NDIS_STATUS_PENDING
  • NDIS_STATUS_TAPI_NODRIVER
  • NDIS_STATUS_TAPI_RESOURCEUNAVAIL
  • NDIS_STATUS_FAILURE

Requirements

OS Versions: Windows CE .NET 4.0 and later.
Header: Ntddndis.h and Ndistapi.h.

See Also

OID_TAPI_GET_DEV_CAPS | OID_TAPI_GET_ID | OID_TAPI_NEGOTIATE_EXT_VERSION | MiniportQueryInformation

 Last updated on Tuesday, May 18, 2004

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