I have Huawei E353 modem, detected as E398. It seems this doesn't have any port , for commands.
Bus 002 Device 006: ID 12d1:1506 Huawei Technologies Co., Ltd. E398 LTE/UMTS/GSM Modem/Networkcard
Prepaid Manager App from Software Center is able to get balance. But i am unable to use it with ixcon


Additonal Details
biggenius@hacbook:~$ sudo cu -l /dev/ttyUSB1
[sudo] password for biggenius:
cu: open (/dev/ttyUSB1): Permission denied
cu: /dev/ttyUSB1: Line in use
biggenius@hacbook:~$ sudo cu -l /dev/ttyUSB2
cu: open (/dev/ttyUSB2): Permission denied
cu: /dev/ttyUSB2: Line in use
biggenius@hacbook:~$ sudo cu -l /dev/ttyUSB3
cu: open (/dev/ttyUSB3): No such file or directory
cu: /dev/ttyUSB3: Line in use
biggenius@hacbook:~$ sudo cu -l /dev/ttyUSB4
cu: open (/dev/ttyUSB4): No such file or directory
cu: /dev/ttyUSB4: Line in use
Dmesg Output:
[ 13.731431] ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 13.734645] ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 13.737855] jme 0000:04:00.5: irq 48 for MSI/MSI-X
[ 13.760998] jme 0000:04:00.5: eth0: Link is down
[ 13.761156] ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 13.761635] ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 14.038556] usb 2-1.3: USB disconnect, device number 5
[ 14.754960] init: plymouth-stop pre-start process (1244) terminated with status 1
[ 18.074708] usb 2-1.3: new high-speed USB device number 6 using ehci_hcd
[ 18.269590] scsi9 : usb-storage 2-1.3:1.5
[ 18.269836] scsi10 : usb-storage 2-1.3:1.6
[ 18.353777] usbcore: registered new interface driver usbserial
[ 18.353790] USB Serial support registered for generic
[ 18.353855] usbcore: registered new interface driver usbserial_generic
[ 18.353857] usbserial: USB Serial Driver core
[ 18.371429] USB Serial support registered for GSM modem (1-port)
[ 18.371535] option 2-1.3:1.0: GSM modem (1-port) converter detected
[ 18.372861] usb 2-1.3: GSM modem (1-port) converter now attached to ttyUSB0
[ 18.372893] option 2-1.3:1.3: GSM modem (1-port) converter detected
[ 18.373007] usb 2-1.3: GSM modem (1-port) converter now attached to ttyUSB1
[ 18.373022] option 2-1.3:1.4: GSM modem (1-port) converter detected
[ 18.373135] usb 2-1.3: GSM modem (1-port) converter now attached to ttyUSB2
[ 18.373627] usbcore: registered new interface driver option
[ 18.373630] option: v0.7.2:USB Driver for GSM modems
[ 19.274962] scsi 9:0:0:0: CD-ROM HUAWEI Mass Storage 2.31 PQ: 0 ANSI: 2
[ 19.275074] scsi 10:0:0:0: Direct-Access HUAWEI TF CARD Storage PQ: 0 ANSI: 2
[ 19.279816] sr1: scsi-1 drive
[ 19.280562] sr 9:0:0:0: Attached scsi CD-ROM sr1
[ 19.282291] sr 9:0:0:0: Attached scsi generic sg3 type 5
[ 19.282529] sd 10:0:0:0: Attached scsi generic sg4 type 0
[ 19.286186] sd 10:0:0:0: [sdc] Attached SCSI removable disk
[ 31.648116] audit_printk_skb: 36 callbacks suppressed
[ 31.648120] type=1400 audit(1344573805.627:24): apparmor="DENIED" operation="open" parent=1 profile="/usr/lib/telepathy/mission-control-5" name="/usr/share/gvfs/remote-volume-monitors/" pid=1919 comm="mission-control" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
[ 451.574870] PPP BSD Compression module registered
[ 451.600415] PPP Deflate Compression module registered
[ 2401.511643] keyboard: can't emulate rawmode for keycode 240
[ 2401.511657] keyboard: can't emulate rawmode for keycode 240
[ 3303.070214] type=1400 audit(1344577078.609:25): apparmor="DENIED" operation="open" parent=5566 profile="/usr/lib/cups/backend/cups-pdf" name="/proc/5567/auxv" pid=5567 comm="gs" requested_mask="r" denied_mask="r" fsuid=1000 ouid=1000
[ 3391.597743] type=1400 audit(1344577167.177:26): apparmor="DENIED" operation="open" parent=1 profile="/usr/bin/evince-previewer" name="/home/biggenius/.cache/dconf/user" pid=5691 comm="evince-previewe" requested_mask="wc" denied_mask="wc" fsuid=1000 ouid=1000
[ 3543.148486] keyboard: can't emulate rawmode for keycode 240
[ 3543.148499] keyboard: can't emulate rawmode for keycode 240