## Standard interfaces

Please refer to the DBus specification at `freedesktop.org` for more information on how to use these standard interfaces.

## org.freedesktop.DBus.Properties

All objects (Manager, Modems, Bearers, CBMs, SIMs, SMSs) exported at the `org.freedesktop.ModemManager1` bus name implement the standard `org.freedesktop.DBus.Properties` interface. Objects implementing this interface provide a common way to query for property values and also a generic signal to get notified about changes in those properties.