Como mudar a Huawei CDMA 2252+ para USB a partir do CD-ROM?

Question

Tenho o celular Huawei CDMA 2252+ e quero conectá-lo ao Linux para enviar SMS. No Fedora 15 (64 bits) é considerado como CD-ROM. Esta é a saída de dmesg depois que o telefone é conectado.

[10887.524339] USB Mass Storage support registered.
[10888.614507] scsi 3:0:0:0: CD-ROM            HUAWEI   Mass Storage     2.31 PQ: 0 ANSI: 2
[10888.786098] sr1: scsi-1 drive
[10888.788583] sr 3:0:0:0: Attached scsi CD-ROM sr1
[10888.788904] sr 3:0:0:0: Attached scsi generic sg2 type 5
[10899.106066] sr1: CDROM (ioctl) error, command: Xpwrite, Read disk info 51 00 00 00 00 00 00 00 02 00
[10899.106073] sr: Sense Key : Hardware Error [current] 
[10899.106075] sr: Add. Sense: No additional sense information

Esta é a saída de lsusb :

Bus 002 Device 004: ID 12d1:1010 Huawei Technologies Co., Ltd.

Depois tentei usar usb_modeswitch para alterar o dispositivo para USB da seguinte forma. (Meu dispositivo não está na lista de dispositivos compatíveis com usb_modewitch ).

A saída de usb_modeswitch --verbose -H -v 0x12d1 -p 0x1010 :

* usb_modeswitch: handle USB devices with multiple modes
* Version 1.1.6 (C) Josua Dietze 2010
* Based on libusb0 (0.1.12 and above)

! PLEASE REPORT NEW CONFIGURATIONS !

DefaultVendor=  0x12d1
DefaultProduct= 0x1010
TargetVendor=   not set
TargetProduct=  not set
TargetClass=    not set
TargetProductList=""

DetachStorageOnly=0
HuaweiMode=1
SierraMode=0
SonyMode=0
GCTMode=0
KobilMode=0
MessageEndpoint=  not set
MessageContent=""
NeedResponse=0
ResponseEndpoint= not set
Interface=0x00

InquireDevice enabled (default)
Success check disabled
System integration mode disabled


Looking for default devices ...
searching devices, found USB ID 1d6b:0002
searching devices, found USB ID 1d6b:0001
searching devices, found USB ID 12d1:1010
found matching vendor ID
found matching product ID
adding device
searching devices, found USB ID 0e0f:0003
searching devices, found USB ID 0e0f:0002
Found devices in default mode, class or configuration (1)
Accessing device 005 on bus 002 ...
Getting the current device configuration ...
OK, got current device configuration (1)
Using endpoints 0x0b (out) and 0x8a (in)
Using endpoints 0x0b (out) and 0x8a (in)
Not a storage device, skipping SCSI inquiry

USB description data (for identification)
-------------------------
Manufacturer: Huawei, Incorporated
  Product: Huawei Technologies
Serial No.: not provided
-------------------------
Sending Huawei control message ...
OK, Huawei control message sent
-> Run lsusb to note any changes. Bye.

Depois disso, executei o lsusb e não notei nenhuma alteração. No entanto, os seguintes são notificados em dmesg :

[  180.438107] usb 2-2.1: USB disconnect, address 4
[  199.385604] usb 2-2.1: new full speed USB device using uhci_hcd and address 5
[  199.648757] usb 2-2.1: New USB device found, idVendor=12d1, idProduct=1010
[  199.648759] usb 2-2.1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[  199.648761] usb 2-2.1: Product: Huawei Technologies
[  199.648762] usb 2-2.1: Manufacturer: Huawei, Incorporated

O seguinte é retirado de /var/log/messages .

kernel: [  180.438107] usb 2-2.1: USB disconnect, address 4
kernel: [  199.385604] usb 2-2.1: new full speed USB device using uhci_hcd and address 5
kernel: [  199.648757] usb 2-2.1: New USB device found, idVendor=12d1, idProduct=1010
kernel: [  199.648759] usb 2-2.1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
kernel: [  199.648761] usb 2-2.1: Product: Huawei Technologies
kernel: [  199.648762] usb 2-2.1: Manufacturer: Huawei, Incorporated
mtp-probe: checking bus 2, device 5: "/sys/devices/pci0000:00/0000:00:11.0/0000:02:00.0/usb2/2-2/2-2.1"
mtp-probe: bus: 2, device: 5 was not an MTP device

Não sei se mudei com sucesso o telefone do CD-ROM para o USB. Existe alguma maneira de confirmar isso? Eu não tenho nenhum arquivo ttyUSB na pasta /dev . Como encontrar qual arquivo corresponde ao dispositivo acima? Além disso, quero enviar comandos AT para o telefone. Como fazer isso?