The DeviceName property returns a description of the
device that the connection was established on. For example, the
string "US Robotics Sportster 28000" may be returned for a modem.
Note that this property value may change if the DeviceType
property is modified. Setting this property will change the device
used to establish the dial-up networking connection. Changes to
this property value should be made after changes to the
DeviceType property.
To enumerate a list of available devices for a given device
type, use the DeviceCount property and DeviceEntry
property array.