This object controls the generation of
ceExtUSBModemPlugInNotif and
ceExtUSBModemPlugOutNotif as follows:
'true(1)' - the generation of ceExtUSBModemPlugInNotif
and ceExtUSBModemPlugOutNotif
notifications is enabled.
'false(2)' - the generation of ceExtUSBModemPlugOutNotif
and ceExtUSBModemPlugOutNotif
notifications is disabled.