[使用ツール]：usbmon-0.50
[接続したUSBデバイス商品名]：携帯電話（通信モード）
[接続したUSBデバイス型式]：FOMA N900i
[Device Descriptor]
  bLength ..................... 18
  bDescriptorType ............. 0x01 (Device)
  bcdUSB ...................... 0x0200 (release 2.00)
  bDeviceClass ................ 0xff (vendor-specific)
  bDeviceSubClass ............. 0xff (Unknown)
  bDeviceProtocol ............. 0xff (vendor-specific)
  bMaxPacketSize0 ............. 64
  idVendor .................... 0x0409
  idProduct ................... 0x0112
  bcdDevice ................... 0x0100
  iManufacturer ............... 1
  iProduct .................... 2
  iSerialNumber ............... 3
  bNumConfigurations .......... 1
[Configuration Descriptor]
  bLength ..................... 9
  bDescriptorType ............. 0x02 (Configuration)
  wTotalLength ................ 206
  bNumInterfaces .............. 6
  bConfigurationValue ......... 1
  iConfiguration .............. 0
  bmAttributes ................ 0xc0 (Self-powered)
  bMaxPower ................... 50 (100mA)
[Interface Descriptor]
  bLength ..................... 9
  bDescriptorType ............. 0x04 (Interface)
  bInterfaceNumber ............ 0
  bAlternateSetting ........... 0
  bNumEndpoints ............... 1
  bInterfaceClass ............. 0x02 (CDC-Control)
  bInterfaceSubClass .......... 0x88 (Unknown)
  bInterfaceProtocol .......... 0x01 (Unknown)
  iInterface .................. 0
未対応のディスクリプタです(bDescriptorType=0x24, bLength=5)
05 24 00 10 01
未対応のディスクリプタです(bDescriptorType=0x24, bLength=5)
05 24 01 03 01
未対応のディスクリプタです(bDescriptorType=0x24, bLength=4)
04 24 02 06
未対応のディスクリプタです(bDescriptorType=0x24, bLength=6)
06 24 06 00 01 02
未対応のディスクリプタです(bDescriptorType=0x44, bLength=6)
06 44 11 01 01 c0
未対応のディスクリプタです(bDescriptorType=0x44, bLength=6)
06 44 12 01 90 91
[EndPoint Descriptor]
  bLength ..................... 7
  bDescriptorType ............. 0x05 (EndPoint)
  bEndpointAddress ............ 0x81 (IN, Endpoint = 1)
  bmAttributes ................ 0x03 (Interrupt)
  wMaxPacketSize .............. 16
  bInterval ................... 16 (16ms)
[Interface Descriptor]
  bLength ..................... 9
  bDescriptorType ............. 0x04 (Interface)
  bInterfaceNumber ............ 1
  bAlternateSetting ........... 0
  bNumEndpoints ............... 2
  bInterfaceClass ............. 0x0a (CDC-Data)
  bInterfaceSubClass .......... 0x00 (Unknown)
  bInterfaceProtocol .......... 0x00 (None)
  iInterface .................. 0
[EndPoint Descriptor]
  bLength ..................... 7
  bDescriptorType ............. 0x05 (EndPoint)
  bEndpointAddress ............ 0x82 (IN, Endpoint = 2)
  bmAttributes ................ 0x02 (Bulk)
  wMaxPacketSize .............. 64
  bInterval ................... 0
[EndPoint Descriptor]
  bLength ..................... 7
  bDescriptorType ............. 0x05 (EndPoint)
  bEndpointAddress ............ 0x03 (OUT, Endpoint = 3)
  bmAttributes ................ 0x02 (Bulk)
  wMaxPacketSize .............. 64
  bInterval ................... 0
[Interface Descriptor]
  bLength ..................... 9
  bDescriptorType ............. 0x04 (Interface)
  bInterfaceNumber ............ 2
  bAlternateSetting ........... 0
  bNumEndpoints ............... 0
  bInterfaceClass ............. 0x0a (CDC-Data)
  bInterfaceSubClass .......... 0x00 (Unknown)
  bInterfaceProtocol .......... 0x00 (None)
  iInterface .................. 0
[Interface Descriptor]
  bLength ..................... 9
  bDescriptorType ............. 0x04 (Interface)
  bInterfaceNumber ............ 2
  bAlternateSetting ........... 1
  bNumEndpoints ............... 2
  bInterfaceClass ............. 0x0a (CDC-Data)
  bInterfaceSubClass .......... 0x00 (Unknown)
  bInterfaceProtocol .......... 0x00 (None)
  iInterface .................. 0
[EndPoint Descriptor]
  bLength ..................... 7
  bDescriptorType ............. 0x05 (EndPoint)
  bEndpointAddress ............ 0x84 (IN, Endpoint = 4)
  bmAttributes ................ 0x01 (Isochronous)
  wMaxPacketSize .............. 16
  bInterval ................... 1 (1ms)
[EndPoint Descriptor]
  bLength ..................... 7
  bDescriptorType ............. 0x05 (EndPoint)
  bEndpointAddress ............ 0x05 (OUT, Endpoint = 5)
  bmAttributes ................ 0x01 (Isochronous)
  wMaxPacketSize .............. 16
  bInterval ................... 1 (1ms)
[Interface Descriptor]
  bLength ..................... 9
  bDescriptorType ............. 0x04 (Interface)
  bInterfaceNumber ............ 3
  bAlternateSetting ........... 0
  bNumEndpoints ............... 1
  bInterfaceClass ............. 0x02 (CDC-Control)
  bInterfaceSubClass .......... 0x88 (Unknown)
  bInterfaceProtocol .......... 0x01 (Unknown)
  iInterface .................. 0
未対応のディスクリプタです(bDescriptorType=0x24, bLength=5)
05 24 00 10 01
未対応のディスクリプタです(bDescriptorType=0x24, bLength=5)
05 24 01 03 04
未対応のディスクリプタです(bDescriptorType=0x24, bLength=4)
04 24 02 06
未対応のディスクリプタです(bDescriptorType=0x24, bLength=5)
05 24 06 03 04
未対応のディスクリプタです(bDescriptorType=0x44, bLength=6)
06 44 11 02 60 c0
[EndPoint Descriptor]
  bLength ..................... 7
  bDescriptorType ............. 0x05 (EndPoint)
  bEndpointAddress ............ 0x86 (IN, Endpoint = 6)
  bmAttributes ................ 0x03 (Interrupt)
  wMaxPacketSize .............. 16
  bInterval ................... 16 (16ms)
[Interface Descriptor]
  bLength ..................... 9
  bDescriptorType ............. 0x04 (Interface)
  bInterfaceNumber ............ 4
  bAlternateSetting ........... 0
  bNumEndpoints ............... 2
  bInterfaceClass ............. 0x0a (CDC-Data)
  bInterfaceSubClass .......... 0x00 (Unknown)
  bInterfaceProtocol .......... 0x00 (None)
  iInterface .................. 0
[EndPoint Descriptor]
  bLength ..................... 7
  bDescriptorType ............. 0x05 (EndPoint)
  bEndpointAddress ............ 0x87 (IN, Endpoint = 7)
  bmAttributes ................ 0x02 (Bulk)
  wMaxPacketSize .............. 64
  bInterval ................... 0
[EndPoint Descriptor]
  bLength ..................... 7
  bDescriptorType ............. 0x05 (EndPoint)
  bEndpointAddress ............ 0x08 (OUT, Endpoint = 8)
  bmAttributes ................ 0x02 (Bulk)
  wMaxPacketSize .............. 64
  bInterval ................... 0
[Interface Descriptor]
  bLength ..................... 9
  bDescriptorType ............. 0x04 (Interface)
  bInterfaceNumber ............ 5
  bAlternateSetting ........... 0
  bNumEndpoints ............... 1
  bInterfaceClass ............. 0x02 (CDC-Control)
  bInterfaceSubClass .......... 0x88 (Unknown)
  bInterfaceProtocol .......... 0x01 (Unknown)
  iInterface .................. 0
未対応のディスクリプタです(bDescriptorType=0x24, bLength=5)
05 24 00 10 01
未対応のディスクリプタです(bDescriptorType=0x24, bLength=4)
04 24 06 05
未対応のディスクリプタです(bDescriptorType=0x44, bLength=5)
05 44 11 05 02
[EndPoint Descriptor]
  bLength ..................... 7
  bDescriptorType ............. 0x05 (EndPoint)
  bEndpointAddress ............ 0x89 (IN, Endpoint = 9)
  bmAttributes ................ 0x03 (Interrupt)
  wMaxPacketSize .............. 16
  bInterval ................... 16 (16ms)

[意見・感想など]
携帯電話(FOMA)もケーブル接続でUSBに繋がる事を思い出し、繋いでみました。
今回は通信モード（モデムモード？）の設定です。