ndis

The ndis device class consists of devices that can be associated with network driver interface specification (NDIS) media access control (MAC) drivers to support network communications. You access these devices by using functions.

The lineGetID4OL17WJ and phoneGetIDCQL49I functions fill a VARSTRINGFZOPJB structure, setting the dwStringFormat member to the STRINGFORMAT_BINARY value and appending these additional members:

HANDLE  hDevice;          // NDIS connection identifier

CHAR    szDeviceType[1];  // name of device

The hDevice member is the identifier to pass to a MAC, such as the asynchronous MAC for dial-up networking, to associate a network connection with the call/modem connection. The szDeviceType member is a null-terminated ASCII string specifying the name of the device associated with the identifier. For more information, see documentation about writing NDIS MAC drivers for use with dial-up networking.