The D-Bus name
on the system bus is the new name used by the ModemManager 1.0 daemon, and it
implements several standard DBus interfaces, including the new
interface, which allows to list available modem objects and get notifications
where new ones are added or when existing ones are removed. There are therefore
neither a custom method to enumerate devices as in the old 0.6 interface, nor
custom signals to notify about added or removed modems.
Modems which are found but are not usable will be flagged with a
state in the
property, and a more detailed reason about the failure will be given in the
property. The most common case of failure is to have the SIM missing in a modem which
requires one for operation.