The DeviceEntry property array can be used in conjunction
with the DeviceCount property to enumerate the available
dial-up networking devices. Typically this is used to provide a user
with a selection of dial-up devices. The device used by the current
phonebook entry can be changed by setting the DeviceName
property to one of the device entry values.
Note that you should first set the DeviceType property to
the type of device which you wish to enumerate. The default device
type is "modem", for serial analog modems or other devices
which recognize the AT command set.