ModemManager is a DBus-activated daemon which controls mobile broadband (2G/3G/4G)
devices and connections. Whether built-in devices, USB dongles, bluetooth-paired
telephones, or professional RS232/USB devices with external power supplies,
ModemManager is able to prepare and configure the modems and setup connections
with them.
http://www.freedesktop.org/wiki/Software/ModemManager/
