Sierra MC7710 / Ubuntu 13.04

$ uname -a
Linux UnknownDevice 3.9.6-030906-generic #201306131535 SMP Thu Jun 13 19:35:54 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux

$ dmesg | grep 1-1.4
[    2.881782] usb 1-1.4: new high-speed USB device number 6 using ehci-pci
[    2.975661] usb 1-1.4: config 1 has an invalid interface number: 12 but max is 1
[    2.975662] usb 1-1.4: config 1 has an invalid interface number: 13 but max is 1
[    2.975663] usb 1-1.4: config 1 has an invalid interface number: 13 but max is 1
[    2.975665] usb 1-1.4: config 1 has no interface number 0
[    2.975665] usb 1-1.4: config 1 has no interface number 1
[    2.978164] usb 1-1.4: New USB device found, idVendor=1199, idProduct=68a2
[    2.978165] usb 1-1.4: New USB device strings: Mfr=3, Product=2, SerialNumber=4
[    2.978166] usb 1-1.4: Product: MC7710
[    2.978167] usb 1-1.4: Manufacturer: Sierra Wireless, Incorporated
[    2.978168] usb 1-1.4: SerialNumber: 358178040393565
[    2.992284] cdc_mbim 1-1.4:1.12: cdc-wdm0: USB WDM device
[    2.992489] cdc_mbim 1-1.4:1.12 wwan0: register 'cdc_mbim' at usb-0000:00:1a.0-1.4, CDC MBIM, a2:6d:54:2b:27:17

$ rfkill list
0: hci0: Bluetooth
	Soft blocked: no
	Hard blocked: no
1: phy0: Wireless LAN
	Soft blocked: no
	Hard blocked: no
2: sony-wifi: Wireless LAN
	Soft blocked: no
	Hard blocked: no
3: sony-bluetooth: Bluetooth
	Soft blocked: no
	Hard blocked: no
4: sony-wwan: Wireless WAN
	Soft blocked: no
	Hard blocked: no

$ ifconfig wwan0
wwan0     Link encap:Ethernet  HWaddr a2:6d:54:2b:27:17  
          BROADCAST NOARP MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)