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+
+ModemManager integration is organized as follows:
+
+
+Common source
+********************************************************************************
+
+ * nm-modem.[h|c]:
+      Defines the basic `NMModem' object. The core NetworkManager implementation
+      will use this interface exclusively, regardless of the real final type of
+      the modem object.
+
+ * nm-modem-manager.[h|c]:
+      Defines the `NMModemManager' object, which takes care of listening to
+      signals from the DBus interface notifying about added or removed modems.
+      It also takes care of creating proper `NMModem' objects from the
+      information retrieved from the DBus interface.
+
+
+ModemManager 0.7 integration
+********************************************************************************
+
+ * nm-modem-broadband.[h|c]:
+      Defines the `NMModemBroadband' object, which is a subclass of `NMModem'.
+      This object handles both 3GPP and 3GPP2 modems exposed in the new
+      `ModemManager1' interface.
+
+
+ModemManager 0.4/0.5/0.6 integration
+********************************************************************************
+
+ * nm-modem-old-types.h:
+      Defines helper types to use with the (old) ModemManager DBus API.
+
+ * nm-modem-old.[h|c]:
+      Defines the `NMModemGeneric' object. All modem objects based on the old
+      ModemManager interface are subclasses of this one.
+
+ * nm-modem-gsm.[h|c]:
+      Defines the `NMModemGsm' object, which is a subclass of `NMModemGeneric'.
+      This object handles 3GPP-specific (GSM, UMTS, HSPA, LTE) modems.
+
+ * nm-modem-cdma.[h|c]:
+      Defines the `NMModemCdma' object, which is a subclass of `NMModemGeneric'.
+      This object handles 3GPP2-specific modems (CDMA, EV-DO).