[root@stlinux]#/etc/ppp/usb_modeswitch -c /etc/ppp/switch/12d1:155b

Looking for target devices ...
 No devices in target mode or class found
Looking for default devices ...
   found matching product ID
   adding device
 Found device in default mode, class or configuration (1)
Accessing device 002 on bus 001 ...
Getting the current device configuration ...
 OK, got current device configuration (1)
Using interface number 0
Using endpoints 0x01 (out) and 0x81 (in)
Inquiring device details; driver will be detached ...
Looking for active driver ...
 OK, driver found ("usb-storage")
 OK, driver "usb-storage" detached

SCSI inquiry data (for identification)
-------------------------
  Vendor String:
   Model String: Mass Storage
Revision String: 2.31
-------------------------

USB description data (for identification)
-------------------------
Manufacturer:
     Product: Mobile Connect
  Serial No.: not provided
-------------------------
Setting up communication with interface 0
Using endpoint 0x01 for message sending ...
Trying to send message 1 to endpoint 0x01 ...
 Device seems to have vanished right after sending. Good.
 Device is gone, skipping any further commands
-> Run lsusb to note any changes. Bye.

[root@stlinux]#


[root@stlinux]#/root/spark/Ad/Patch/sbin/busybox lsusb
Bus 001 Device 001: ID 1d6b:0002
Bus 002 Device 001: ID 1d6b:0001
Bus 001 Device 003: ID 12d1:1506
[root@stlinux]#


[root@stlinux]#/root/spark/Ad/Patch/sbin/busybox lsusb
Bus 001 Device 001: ID 1d6b:0002
Bus 002 Device 001: ID 1d6b:0001
Bus 001 Device 003: ID 12d1:1506
[root@stlinux]#

[root@stlinux]#dmesg  |  tail -n 40
<6>sierra: v.1.3.8:USB Driver for Sierra Wireless USB modems
<4>IRQ 156/BLITTER: IRQF_DISABLED is not guaranteed on shared IRQs
<6>input: ywvinput as /devices/virtual/input/input0
<6>input: droidinput as /devices/virtual/input/input1
<4>IRQ 156/STGFB_Blitter: IRQF_DISABLED is not guaranteed on shared IRQs
<4>*********get viewport handle: 0xc17b4e4c, 0xc17b4e4c
<4>save exit: isCheckpointed 1
<4>save exit: isCheckpointed 1
<4>*********get viewport handle: 0x0, 0x0
<4>*********get viewport handle: 0xc17b4e4c, 0xc17b4e4c
<4>save exit: isCheckpointed 1
<4>save exit: isCheckpointed 1
<4>smart_ioctl------------------------->set handle
<4>save exit: isCheckpointed 1
<4>save exit: isCheckpointed 1
<4>save exit: isCheckpointed 1
<4>save exit: isCheckpointed 1
<4>save exit: isCheckpointed 1
<4>save exit: isCheckpointed 1
<4>usb 1-1: usbfs: process 1335 (usb_modeswitch) did not claim interface 0 befor                                                                                                                                                              e use
<6>usb 1-1: USB disconnect, address 2
<6>usb 1-1: new high speed USB device using stm-ehci and address 3
<6>usb 1-1: configuration #1 chosen from 1 choice
<4>[usb_probe_interface]drive name=usbserial_generic
<4>[usb_probe_interface]drive name=usbserial_generic
<4>[usb_probe_interface]drive name=usbserial_generic
<4>[usb_probe_interface]drive name=usbserial_generic
<4>[usb_probe_interface]drive name=usb-storage
<6>scsi2 : SCSI emulation for USB Mass Storage devices
<7>usb-storage: device found at 3
<7>usb-storage: waiting for device to settle before scanning
<4>[usb_probe_interface]drive name=usb-storage
<6>scsi3 : SCSI emulation for USB Mass Storage devices
<7>usb-storage: device found at 3
<7>usb-storage: waiting for device to settle before scanning
<5>scsi 2:0:0:0: CD-ROM                     Mass Storage     2.31 PQ: 0 ANSI: 2
<7>usb-storage: device scan complete
<5>scsi 3:0:0:0: Direct-Access              SD Storage       2.31 PQ: 0 ANSI: 2
<7>usb-storage: device scan complete
<5>sd 3:0:0:0: [sda] Attached SCSI removable disk
[root@stlinux]#