2.2.2.28.1 CDCLASS

The CDCLASS enumeration specifies a type of connection driver.

 typedef  enum _CDCLASS
 {
   CdNone,
   CdModem,
   CdClass_Maximum,
 } CDCLASS;

CdNone:  No connection driver.

CdModem:  Connection driver is a modem.

CdClass_Maximum:  A given CdClass variable will always be less than this value.