|  |  |  |  | 
      Please refer to the
      
        DBus specification at freedesktop.org
       for more information on how to use these standard interfaces.
    
        All objects (Manager,
        Modems,
        Bearers,
        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.