Sierra Wireless MC7304 firmware with voice support (VoLTE):
SWI9X15C_06.03.32.02 r26426 CNSHZ-AR-BUILD 2015/01/16 01:32:41

AT!UDUSBCOMP=?

1   - DM AT
23  - DM NMEA MODEM RMNET1 RMNET2 RMNET3 AUDIO
24  - DM NMEA MODEM RMNET1 RMNET2 RMNET3
25  - DM NMEA MODEM AT AUDIO

***************************
AT!UDUSBCOMP=1 (DM, AT)

MC7304 VID=0x1199 PID=0x68C0
firmware with voice support (VoLTE)
SWI9X15C_06.03.32.02 r26426 CNSHZ-AR-BUILD 2015/01/16 01:32:41

Device Descriptor:
------------------------------
0x12    bLength
0x01    bDescriptorType
0x0200  bcdUSB
0x00    bDeviceClass
0x00    bDeviceSubClass
0x00    bDeviceProtocol
0x40    bMaxPacketSize0   (64 bytes)
0x1199  idVendor
0x68C0  idProduct
0x0006  bcdDevice
0x01    iManufacturer   "Sierra Wireless, Incorporated"
0x02    iProduct   "MC7304"
0x03    iSerialNumber   "0123456789ABCDEF"
0x01    bNumConfigurations

Device Qualifier Descriptor:
------------------------------
0x0A    bLength
0x06    bDescriptorType
0x0200  bcdUSB
0x00    bDeviceClass
0x00    bDeviceSubClass
0x00    bDeviceProtocol
0x40    bMaxPacketSize0   (64 bytes)
0x01    bNumConfigurations
0x00    bReserved

Configuration Descriptor:
------------------------------
0x09    bLength
0x02    bDescriptorType
0x0051  wTotalLength   (81 bytes)
0x02    bNumInterfaces
0x01    bConfigurationValue
0x00    iConfiguration
0xE0    bmAttributes   (Self-powered Device, Remote-Wakeup)
0xFA    bMaxPower      (500 mA)

Interface Descriptor:
------------------------------
0x09    bLength
0x04    bDescriptorType
0x00    bInterfaceNumber
0x00    bAlternateSetting
0x02    bNumEndPoints
0xFF    bInterfaceClass      (Vendor specific)
0xFF    bInterfaceSubClass
0xFF    bInterfaceProtocol
0x00    iInterface

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x81    bEndpointAddress  (IN endpoint 1)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0200  wMaxPacketSize    (512 bytes)
0x00    bInterval

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x01    bEndpointAddress  (OUT endpoint 1)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0200  wMaxPacketSize    (512 bytes)
0x00    bInterval

Interface Descriptor:
------------------------------
0x09    bLength
0x04    bDescriptorType
0x04    bInterfaceNumber
0x00    bAlternateSetting
0x03    bNumEndPoints
0xFF    bInterfaceClass      (Vendor specific)
0x00    bInterfaceSubClass
0x00    bInterfaceProtocol
0x00    iInterface

Unknown Descriptor:
------------------------------
0x05    bLength
0x24    bDescriptorType
Hex dump:
0x05 0x24 0x00 0x10 0x01

Unknown Descriptor:
------------------------------
0x05    bLength
0x24    bDescriptorType
Hex dump:
0x05 0x24 0x01 0x00 0x00

Unknown Descriptor:
------------------------------
0x04    bLength
0x24    bDescriptorType
Hex dump:
0x04 0x24 0x02 0x02

Unknown Descriptor:
------------------------------
0x05    bLength
0x24    bDescriptorType
Hex dump:
0x05 0x24 0x06 0x00 0x00

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x83    bEndpointAddress  (IN endpoint 3)
0x03    bmAttributes      (Transfer: Interrupt / Synch: None / Usage: Data)
0x000C  wMaxPacketSize    (1 x 12 bytes)
0x09    bInterval         (256 microframes)

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x82    bEndpointAddress  (IN endpoint 2)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0200  wMaxPacketSize    (512 bytes)
0x00    bInterval

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x02    bEndpointAddress  (OUT endpoint 2)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0200  wMaxPacketSize    (512 bytes)
0x00    bInterval

Other Speed Configuration Descriptor:
------------------------------
0x09    bLength
0x07    bDescriptorType
0x0051  wTotalLength   (81 bytes)
0x02    bNumInterfaces
0x01    bConfigurationValue
0x00    iConfiguration
0xE0    bmAttributes   (Self-powered Device, Remote-Wakeup)
0xFA    bMaxPower      (500 mA)

Interface Descriptor:
------------------------------
0x09    bLength
0x04    bDescriptorType
0x00    bInterfaceNumber
0x00    bAlternateSetting
0x02    bNumEndPoints
0xFF    bInterfaceClass      (Vendor specific)
0xFF    bInterfaceSubClass
0xFF    bInterfaceProtocol
0x00    iInterface

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x81    bEndpointAddress  (IN endpoint 1)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0040  wMaxPacketSize    (64 bytes)
0x00    bInterval

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x01    bEndpointAddress  (OUT endpoint 1)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0040  wMaxPacketSize    (64 bytes)
0x00    bInterval

Interface Descriptor:
------------------------------
0x09    bLength
0x04    bDescriptorType
0x04    bInterfaceNumber
0x00    bAlternateSetting
0x03    bNumEndPoints
0xFF    bInterfaceClass      (Vendor specific)
0x00    bInterfaceSubClass
0x00    bInterfaceProtocol
0x00    iInterface

Unknown Descriptor:
------------------------------
0x05    bLength
0x24    bDescriptorType
Hex dump:
0x05 0x24 0x00 0x10 0x01

Unknown Descriptor:
------------------------------
0x05    bLength
0x24    bDescriptorType
Hex dump:
0x05 0x24 0x01 0x00 0x00

Unknown Descriptor:
------------------------------
0x04    bLength
0x24    bDescriptorType
Hex dump:
0x04 0x24 0x02 0x02

Unknown Descriptor:
------------------------------
0x05    bLength
0x24    bDescriptorType
Hex dump:
0x05 0x24 0x06 0x00 0x00

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x83    bEndpointAddress  (IN endpoint 3)
0x03    bmAttributes      (Transfer: Interrupt / Synch: None / Usage: Data)
0x000C  wMaxPacketSize    (1 x 12 bytes)
0x20    bInterval         (32 frames)

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x82    bEndpointAddress  (IN endpoint 2)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0040  wMaxPacketSize    (64 bytes)
0x00    bInterval

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x02    bEndpointAddress  (OUT endpoint 2)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0040  wMaxPacketSize    (64 bytes)
0x00    bInterval

String Descriptor Table
--------------------------------
Index  LANGID  String
0x00   0x0000  0x0409
0x01   0x0409  "Sierra Wireless, Incorporated"
0x02   0x0409  "MC7304"
0x03   0x0409  "0123456789ABCDEF"

***************************
AT!UDUSBCOMP=23 (DM, NMEA, MODEM, RMNET1, RMNET2, RMNET3, AUDIO)

MC7304 VID=0x1199 PID=0x68C0
firmware with voice support (VoLTE)
SWI9X15C_06.03.32.02 r26426 CNSHZ-AR-BUILD 2015/01/16 01:32:41

Device Descriptor:
------------------------------
0x12    bLength
0x01    bDescriptorType
0x0200  bcdUSB
0x00    bDeviceClass
0x00    bDeviceSubClass
0x00    bDeviceProtocol
0x40    bMaxPacketSize0   (64 bytes)
0x1199  idVendor
0x68C0  idProduct
0x0006  bcdDevice
0x01    iManufacturer   "Sierra Wireless, Incorporated"
0x02    iProduct   "MC7304"
0x03    iSerialNumber   "0123456789ABCDEF"
0x01    bNumConfigurations

Device Qualifier Descriptor:
------------------------------
0x0A    bLength
0x06    bDescriptorType
0x0200  bcdUSB
0x00    bDeviceClass
0x00    bDeviceSubClass
0x00    bDeviceProtocol
0x40    bMaxPacketSize0   (64 bytes)
0x01    bNumConfigurations
0x00    bReserved

Configuration Descriptor:
------------------------------
0x09    bLength
0x02    bDescriptorType
0x0167  wTotalLength   (359 bytes)
0x09    bNumInterfaces
0x01    bConfigurationValue
0x00    iConfiguration
0xE0    bmAttributes   (Self-powered Device, Remote-Wakeup)
0xFA    bMaxPower      (500 mA)

Interface Descriptor:
------------------------------
0x09    bLength
0x04    bDescriptorType
0x00    bInterfaceNumber
0x00    bAlternateSetting
0x02    bNumEndPoints
0xFF    bInterfaceClass      (Vendor specific)
0xFF    bInterfaceSubClass
0xFF    bInterfaceProtocol
0x00    iInterface

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x81    bEndpointAddress  (IN endpoint 1)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0200  wMaxPacketSize    (512 bytes)
0x00    bInterval

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x01    bEndpointAddress  (OUT endpoint 1)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0200  wMaxPacketSize    (512 bytes)
0x00    bInterval

Interface Descriptor:
------------------------------
0x09    bLength
0x04    bDescriptorType
0x02    bInterfaceNumber
0x00    bAlternateSetting
0x02    bNumEndPoints
0xFF    bInterfaceClass      (Vendor specific)
0x00    bInterfaceSubClass
0x00    bInterfaceProtocol
0x00    iInterface

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x82    bEndpointAddress  (IN endpoint 2)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0200  wMaxPacketSize    (512 bytes)
0x00    bInterval

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x02    bEndpointAddress  (OUT endpoint 2)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0200  wMaxPacketSize    (512 bytes)
0x00    bInterval

Interface Descriptor:
------------------------------
0x09    bLength
0x04    bDescriptorType
0x03    bInterfaceNumber
0x00    bAlternateSetting
0x03    bNumEndPoints
0xFF    bInterfaceClass      (Vendor specific)
0x00    bInterfaceSubClass
0x00    bInterfaceProtocol
0x00    iInterface

Unknown Descriptor:
------------------------------
0x05    bLength
0x24    bDescriptorType
Hex dump:
0x05 0x24 0x00 0x10 0x01

Unknown Descriptor:
------------------------------
0x05    bLength
0x24    bDescriptorType
Hex dump:
0x05 0x24 0x01 0x00 0x00

Unknown Descriptor:
------------------------------
0x04    bLength
0x24    bDescriptorType
Hex dump:
0x04 0x24 0x02 0x02

Unknown Descriptor:
------------------------------
0x05    bLength
0x24    bDescriptorType
Hex dump:
0x05 0x24 0x06 0x00 0x00

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x84    bEndpointAddress  (IN endpoint 4)
0x03    bmAttributes      (Transfer: Interrupt / Synch: None / Usage: Data)
0x000C  wMaxPacketSize    (1 x 12 bytes)
0x09    bInterval         (256 microframes)

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x83    bEndpointAddress  (IN endpoint 3)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0200  wMaxPacketSize    (512 bytes)
0x00    bInterval

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x03    bEndpointAddress  (OUT endpoint 3)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0200  wMaxPacketSize    (512 bytes)
0x00    bInterval

Interface Descriptor:
------------------------------
0x09    bLength
0x04    bDescriptorType
0x08    bInterfaceNumber
0x00    bAlternateSetting
0x03    bNumEndPoints
0xFF    bInterfaceClass      (Vendor specific)
0xFF    bInterfaceSubClass
0xFF    bInterfaceProtocol
0x00    iInterface

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x86    bEndpointAddress  (IN endpoint 6)
0x03    bmAttributes      (Transfer: Interrupt / Synch: None / Usage: Data)
0x000A  wMaxPacketSize    (1 x 10 bytes)
0x09    bInterval         (256 microframes)

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x85    bEndpointAddress  (IN endpoint 5)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0200  wMaxPacketSize    (512 bytes)
0x00    bInterval

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x04    bEndpointAddress  (OUT endpoint 4)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0200  wMaxPacketSize    (512 bytes)
0x00    bInterval

Interface Descriptor:
------------------------------
0x09    bLength
0x04    bDescriptorType
0x0A    bInterfaceNumber
0x00    bAlternateSetting
0x03    bNumEndPoints
0xFF    bInterfaceClass      (Vendor specific)
0xFF    bInterfaceSubClass
0xFF    bInterfaceProtocol
0x00    iInterface

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x88    bEndpointAddress  (IN endpoint 8)
0x03    bmAttributes      (Transfer: Interrupt / Synch: None / Usage: Data)
0x000A  wMaxPacketSize    (1 x 10 bytes)
0x09    bInterval         (256 microframes)

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x87    bEndpointAddress  (IN endpoint 7)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0200  wMaxPacketSize    (512 bytes)
0x00    bInterval

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x05    bEndpointAddress  (OUT endpoint 5)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0200  wMaxPacketSize    (512 bytes)
0x00    bInterval

Interface Descriptor:
------------------------------
0x09    bLength
0x04    bDescriptorType
0x0B    bInterfaceNumber
0x00    bAlternateSetting
0x03    bNumEndPoints
0xFF    bInterfaceClass      (Vendor specific)
0xFF    bInterfaceSubClass
0xFF    bInterfaceProtocol
0x00    iInterface

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x8A    bEndpointAddress  (IN endpoint 10)
0x03    bmAttributes      (Transfer: Interrupt / Synch: None / Usage: Data)
0x000A  wMaxPacketSize    (1 x 10 bytes)
0x09    bInterval         (256 microframes)

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x89    bEndpointAddress  (IN endpoint 9)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0200  wMaxPacketSize    (512 bytes)
0x00    bInterval

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x06    bEndpointAddress  (OUT endpoint 6)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0200  wMaxPacketSize    (512 bytes)
0x00    bInterval

Interface Descriptor:
------------------------------
0x09    bLength
0x04    bDescriptorType
0x10    bInterfaceNumber
0x00    bAlternateSetting
0x00    bNumEndPoints
0x01    bInterfaceClass      (Audio Device Class)
0x01    bInterfaceSubClass   (Audio Control Interface)
0x00    bInterfaceProtocol
0x00    iInterface

AC Interface Header Descriptor:
------------------------------
0x0A    bLength
0x24    bDescriptorType
0x01    bDescriptorSubtype
0x0100  bcdADC
0x0034  wTotalLength   (52 bytes)
0x02    bInCollection
0x11    baInterfaceNr(1)
0x12    baInterfaceNr(2)

AC Input Terminal Descriptor:
------------------------------
0x0C    bLength
0x24    bDescriptorType
0x02    bDescriptorSubtype
0x01    bTerminalID
0x0201  wTerminalType   (Microphone)
0x02    bAssocTerminal
0x01    bNrChannels   (1 channels)
0x0003  wChannelConfig
0x00    iChannelNames
0x00    iTerminal

AC Output Terminal Descriptor:
------------------------------
0x09    bLength
0x24    bDescriptorType
0x03    bDescriptorSubtype
0x02    bTerminalID
0x0101  wTerminalType   (USB Streaming)
0x01    bAssocTerminal
0x01    bSourceID
0x00    iTerminal

AC Input Terminal Descriptor:
------------------------------
0x0C    bLength
0x24    bDescriptorType
0x02    bDescriptorSubtype
0x03    bTerminalID
0x0101  wTerminalType   (USB Streaming)
0x04    bAssocTerminal
0x02    bNrChannels   (2 channels)
0x0003  wChannelConfig
0x00    iChannelNames
0x00    iTerminal

AC Output Terminal Descriptor:
------------------------------
0x09    bLength
0x24    bDescriptorType
0x03    bDescriptorSubtype
0x04    bTerminalID
0x0301  wTerminalType   (Speaker)
0x03    bAssocTerminal
0x03    bSourceID
0x00    iTerminal

Interface Descriptor:
------------------------------
0x09    bLength
0x04    bDescriptorType
0x11    bInterfaceNumber
0x00    bAlternateSetting
0x00    bNumEndPoints
0x01    bInterfaceClass      (Audio Device Class)
0x02    bInterfaceSubClass   (Audio Streaming Interface)
0x00    bInterfaceProtocol
0x00    iInterface

Interface Descriptor:
------------------------------
0x09    bLength
0x04    bDescriptorType
0x11    bInterfaceNumber
0x01    bAlternateSetting
0x01    bNumEndPoints
0x01    bInterfaceClass      (Audio Device Class)
0x02    bInterfaceSubClass   (Audio Streaming Interface)
0x00    bInterfaceProtocol
0x00    iInterface

AS Interface Descriptor:
------------------------------
0x07    bLength
0x24    bDescriptorType
0x01    bDescriptorSubtype
0x02    bTerminalLink
0x01    bDelay
0x0001  wFormatTag   (PCM)

AS Format Type 1 Descriptor:
------------------------------
0x0B    bLength
0x24    bDescriptorType
0x02    bDescriptorSubtype
0x01    bFormatType   (FORMAT_TYPE_1)
0x01    bNrChannels   (1 channels)
0x02    bSubframeSize
0x10    bBitResolution   (16 bits per sample)
0x01    bSamFreqType   (Discrete sampling frequencies)
0x001F40        tSamFreq(1)   (8000 Hz)

Endpoint Descriptor (Audio/MIDI 1.0):
------------------------------
0x09    bLength
0x05    bDescriptorType
0x8B    bEndpointAddress  (IN endpoint 11)
0x05    bmAttributes      (Transfer: Isochronous / Synch: Asynchronous /
Usage: Data)
0x0010  wMaxPacketSize    (1 x 16 bytes)
0x04    bInterval         (8 microframes)
0x00    bRefresh
0x00    bSynchAddress

AS Isochronous Data Endpoint Descriptor:
------------------------------
0x07    bLength
0x25    bDescriptorType
0x01    bDescriptorSubtype
0x01    bmAttributes   (Sampling Frequency)
0x01    bLockDelayUnits   (milliseconds)
0x0001  wLockDelay

Interface Descriptor:
------------------------------
0x09    bLength
0x04    bDescriptorType
0x12    bInterfaceNumber
0x00    bAlternateSetting
0x00    bNumEndPoints
0x01    bInterfaceClass      (Audio Device Class)
0x02    bInterfaceSubClass   (Audio Streaming Interface)
0x00    bInterfaceProtocol
0x00    iInterface

Interface Descriptor:
------------------------------
0x09    bLength
0x04    bDescriptorType
0x12    bInterfaceNumber
0x01    bAlternateSetting
0x01    bNumEndPoints
0x01    bInterfaceClass      (Audio Device Class)
0x02    bInterfaceSubClass   (Audio Streaming Interface)
0x00    bInterfaceProtocol
0x00    iInterface

AS Interface Descriptor:
------------------------------
0x07    bLength
0x24    bDescriptorType
0x01    bDescriptorSubtype
0x03    bTerminalLink
0x01    bDelay
0x0001  wFormatTag   (PCM)

AS Format Type 1 Descriptor:
------------------------------
0x0B    bLength
0x24    bDescriptorType
0x02    bDescriptorSubtype
0x01    bFormatType   (FORMAT_TYPE_1)
0x02    bNrChannels   (2 channels)
0x02    bSubframeSize
0x10    bBitResolution   (16 bits per sample)
0x01    bSamFreqType   (Discrete sampling frequencies)
0x001F40        tSamFreq(1)   (8000 Hz)

Endpoint Descriptor (Audio/MIDI 1.0):
------------------------------
0x09    bLength
0x05    bDescriptorType
0x07    bEndpointAddress  (OUT endpoint 7)
0x09    bmAttributes      (Transfer: Isochronous / Synch: Adaptive / Usage:
Data)
0x0020  wMaxPacketSize    (1 x 32 bytes)
0x04    bInterval         (8 microframes)
0x00    bRefresh
0x00    bSynchAddress

AS Isochronous Data Endpoint Descriptor:
------------------------------
0x07    bLength
0x25    bDescriptorType
0x01    bDescriptorSubtype
0x01    bmAttributes   (Sampling Frequency)
0x01    bLockDelayUnits   (milliseconds)
0x0001  wLockDelay

Other Speed Configuration Descriptor:
------------------------------
0x09    bLength
0x07    bDescriptorType
0x0167  wTotalLength   (359 bytes)
0x09    bNumInterfaces
0x01    bConfigurationValue
0x00    iConfiguration
0xE0    bmAttributes   (Self-powered Device, Remote-Wakeup)
0xFA    bMaxPower      (500 mA)

Interface Descriptor:
------------------------------
0x09    bLength
0x04    bDescriptorType
0x00    bInterfaceNumber
0x00    bAlternateSetting
0x02    bNumEndPoints
0xFF    bInterfaceClass      (Vendor specific)
0xFF    bInterfaceSubClass
0xFF    bInterfaceProtocol
0x00    iInterface

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x81    bEndpointAddress  (IN endpoint 1)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0040  wMaxPacketSize    (64 bytes)
0x00    bInterval

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x01    bEndpointAddress  (OUT endpoint 1)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0040  wMaxPacketSize    (64 bytes)
0x00    bInterval

Interface Descriptor:
------------------------------
0x09    bLength
0x04    bDescriptorType
0x02    bInterfaceNumber
0x00    bAlternateSetting
0x02    bNumEndPoints
0xFF    bInterfaceClass      (Vendor specific)
0x00    bInterfaceSubClass
0x00    bInterfaceProtocol
0x00    iInterface

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x82    bEndpointAddress  (IN endpoint 2)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0040  wMaxPacketSize    (64 bytes)
0x00    bInterval

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x02    bEndpointAddress  (OUT endpoint 2)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0040  wMaxPacketSize    (64 bytes)
0x00    bInterval

Interface Descriptor:
------------------------------
0x09    bLength
0x04    bDescriptorType
0x03    bInterfaceNumber
0x00    bAlternateSetting
0x03    bNumEndPoints
0xFF    bInterfaceClass      (Vendor specific)
0x00    bInterfaceSubClass
0x00    bInterfaceProtocol
0x00    iInterface

Unknown Descriptor:
------------------------------
0x05    bLength
0x24    bDescriptorType
Hex dump:
0x05 0x24 0x00 0x10 0x01

Unknown Descriptor:
------------------------------
0x05    bLength
0x24    bDescriptorType
Hex dump:
0x05 0x24 0x01 0x00 0x00

Unknown Descriptor:
------------------------------
0x04    bLength
0x24    bDescriptorType
Hex dump:
0x04 0x24 0x02 0x02

Unknown Descriptor:
------------------------------
0x05    bLength
0x24    bDescriptorType
Hex dump:
0x05 0x24 0x06 0x00 0x00

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x84    bEndpointAddress  (IN endpoint 4)
0x03    bmAttributes      (Transfer: Interrupt / Synch: None / Usage: Data)
0x000C  wMaxPacketSize    (1 x 12 bytes)
0x20    bInterval         (32 frames)

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x83    bEndpointAddress  (IN endpoint 3)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0040  wMaxPacketSize    (64 bytes)
0x00    bInterval

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x03    bEndpointAddress  (OUT endpoint 3)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0040  wMaxPacketSize    (64 bytes)
0x00    bInterval

Interface Descriptor:
------------------------------
0x09    bLength
0x04    bDescriptorType
0x08    bInterfaceNumber
0x00    bAlternateSetting
0x03    bNumEndPoints
0xFF    bInterfaceClass      (Vendor specific)
0xFF    bInterfaceSubClass
0xFF    bInterfaceProtocol
0x00    iInterface

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x86    bEndpointAddress  (IN endpoint 6)
0x03    bmAttributes      (Transfer: Interrupt / Synch: None / Usage: Data)
0x000A  wMaxPacketSize    (1 x 10 bytes)
0x20    bInterval         (32 frames)

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x85    bEndpointAddress  (IN endpoint 5)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0040  wMaxPacketSize    (64 bytes)
0x00    bInterval

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x04    bEndpointAddress  (OUT endpoint 4)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0040  wMaxPacketSize    (64 bytes)
0x00    bInterval

Interface Descriptor:
------------------------------
0x09    bLength
0x04    bDescriptorType
0x0A    bInterfaceNumber
0x00    bAlternateSetting
0x03    bNumEndPoints
0xFF    bInterfaceClass      (Vendor specific)
0xFF    bInterfaceSubClass
0xFF    bInterfaceProtocol
0x00    iInterface

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x88    bEndpointAddress  (IN endpoint 8)
0x03    bmAttributes      (Transfer: Interrupt / Synch: None / Usage: Data)
0x000A  wMaxPacketSize    (1 x 10 bytes)
0x20    bInterval         (32 frames)

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x87    bEndpointAddress  (IN endpoint 7)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0040  wMaxPacketSize    (64 bytes)
0x00    bInterval

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x05    bEndpointAddress  (OUT endpoint 5)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0040  wMaxPacketSize    (64 bytes)
0x00    bInterval

Interface Descriptor:
------------------------------
0x09    bLength
0x04    bDescriptorType
0x0B    bInterfaceNumber
0x00    bAlternateSetting
0x03    bNumEndPoints
0xFF    bInterfaceClass      (Vendor specific)
0xFF    bInterfaceSubClass
0xFF    bInterfaceProtocol
0x00    iInterface

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x8A    bEndpointAddress  (IN endpoint 10)
0x03    bmAttributes      (Transfer: Interrupt / Synch: None / Usage: Data)
0x000A  wMaxPacketSize    (1 x 10 bytes)
0x20    bInterval         (32 frames)

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x89    bEndpointAddress  (IN endpoint 9)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0040  wMaxPacketSize    (64 bytes)
0x00    bInterval

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x06    bEndpointAddress  (OUT endpoint 6)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0040  wMaxPacketSize    (64 bytes)
0x00    bInterval

Interface Descriptor:
------------------------------
0x09    bLength
0x04    bDescriptorType
0x10    bInterfaceNumber
0x00    bAlternateSetting
0x00    bNumEndPoints
0x01    bInterfaceClass      (Audio Device Class)
0x01    bInterfaceSubClass   (Audio Control Interface)
0x00    bInterfaceProtocol
0x00    iInterface

AC Interface Header Descriptor:
------------------------------
0x0A    bLength
0x24    bDescriptorType
0x01    bDescriptorSubtype
0x0100  bcdADC
0x0034  wTotalLength   (52 bytes)
0x02    bInCollection
0x11    baInterfaceNr(1)
0x12    baInterfaceNr(2)

AC Input Terminal Descriptor:
------------------------------
0x0C    bLength
0x24    bDescriptorType
0x02    bDescriptorSubtype
0x01    bTerminalID
0x0201  wTerminalType   (Microphone)
0x02    bAssocTerminal
0x01    bNrChannels   (1 channels)
0x0003  wChannelConfig
0x00    iChannelNames
0x00    iTerminal

AC Output Terminal Descriptor:
------------------------------
0x09    bLength
0x24    bDescriptorType
0x03    bDescriptorSubtype
0x02    bTerminalID
0x0101  wTerminalType   (USB Streaming)
0x01    bAssocTerminal
0x01    bSourceID
0x00    iTerminal

AC Input Terminal Descriptor:
------------------------------
0x0C    bLength
0x24    bDescriptorType
0x02    bDescriptorSubtype
0x03    bTerminalID
0x0101  wTerminalType   (USB Streaming)
0x04    bAssocTerminal
0x02    bNrChannels   (2 channels)
0x0003  wChannelConfig
0x00    iChannelNames
0x00    iTerminal

AC Output Terminal Descriptor:
------------------------------
0x09    bLength
0x24    bDescriptorType
0x03    bDescriptorSubtype
0x04    bTerminalID
0x0301  wTerminalType   (Speaker)
0x03    bAssocTerminal
0x03    bSourceID
0x00    iTerminal

Interface Descriptor:
------------------------------
0x09    bLength
0x04    bDescriptorType
0x11    bInterfaceNumber
0x00    bAlternateSetting
0x00    bNumEndPoints
0x01    bInterfaceClass      (Audio Device Class)
0x02    bInterfaceSubClass   (Audio Streaming Interface)
0x00    bInterfaceProtocol
0x00    iInterface

Interface Descriptor:
------------------------------
0x09    bLength
0x04    bDescriptorType
0x11    bInterfaceNumber
0x01    bAlternateSetting
0x01    bNumEndPoints
0x01    bInterfaceClass      (Audio Device Class)
0x02    bInterfaceSubClass   (Audio Streaming Interface)
0x00    bInterfaceProtocol
0x00    iInterface

AS Interface Descriptor:
------------------------------
0x07    bLength
0x24    bDescriptorType
0x01    bDescriptorSubtype
0x02    bTerminalLink
0x01    bDelay
0x0001  wFormatTag   (PCM)

AS Format Type 1 Descriptor:
------------------------------
0x0B    bLength
0x24    bDescriptorType
0x02    bDescriptorSubtype
0x01    bFormatType   (FORMAT_TYPE_1)
0x01    bNrChannels   (1 channels)
0x02    bSubframeSize
0x10    bBitResolution   (16 bits per sample)
0x01    bSamFreqType   (Discrete sampling frequencies)
0x001F40        tSamFreq(1)   (8000 Hz)

Endpoint Descriptor (Audio/MIDI 1.0):
------------------------------
0x09    bLength
0x05    bDescriptorType
0x8B    bEndpointAddress  (IN endpoint 11)
0x05    bmAttributes      (Transfer: Isochronous / Synch: Asynchronous /
Usage: Data)
0x0010  wMaxPacketSize    (1 x 16 bytes)
0x04    bInterval         (8 frames)
0x00    bRefresh
0x00    bSynchAddress

AS Isochronous Data Endpoint Descriptor:
------------------------------
0x07    bLength
0x25    bDescriptorType
0x01    bDescriptorSubtype
0x01    bmAttributes   (Sampling Frequency)
0x01    bLockDelayUnits   (milliseconds)
0x0001  wLockDelay

Interface Descriptor:
------------------------------
0x09    bLength
0x04    bDescriptorType
0x12    bInterfaceNumber
0x00    bAlternateSetting
0x00    bNumEndPoints
0x01    bInterfaceClass      (Audio Device Class)
0x02    bInterfaceSubClass   (Audio Streaming Interface)
0x00    bInterfaceProtocol
0x00    iInterface

Interface Descriptor:
------------------------------
0x09    bLength
0x04    bDescriptorType
0x12    bInterfaceNumber
0x01    bAlternateSetting
0x01    bNumEndPoints
0x01    bInterfaceClass      (Audio Device Class)
0x02    bInterfaceSubClass   (Audio Streaming Interface)
0x00    bInterfaceProtocol
0x00    iInterface

AS Interface Descriptor:
------------------------------
0x07    bLength
0x24    bDescriptorType
0x01    bDescriptorSubtype
0x03    bTerminalLink
0x01    bDelay
0x0001  wFormatTag   (PCM)

AS Format Type 1 Descriptor:
------------------------------
0x0B    bLength
0x24    bDescriptorType
0x02    bDescriptorSubtype
0x01    bFormatType   (FORMAT_TYPE_1)
0x02    bNrChannels   (2 channels)
0x02    bSubframeSize
0x10    bBitResolution   (16 bits per sample)
0x01    bSamFreqType   (Discrete sampling frequencies)
0x001F40        tSamFreq(1)   (8000 Hz)

Endpoint Descriptor (Audio/MIDI 1.0):
------------------------------
0x09    bLength
0x05    bDescriptorType
0x07    bEndpointAddress  (OUT endpoint 7)
0x09    bmAttributes      (Transfer: Isochronous / Synch: Adaptive / Usage:
Data)
0x0020  wMaxPacketSize    (1 x 32 bytes)
0x04    bInterval         (8 frames)
0x00    bRefresh
0x00    bSynchAddress

AS Isochronous Data Endpoint Descriptor:
------------------------------
0x07    bLength
0x25    bDescriptorType
0x01    bDescriptorSubtype
0x01    bmAttributes   (Sampling Frequency)
0x01    bLockDelayUnits   (milliseconds)
0x0001  wLockDelay

String Descriptor Table
--------------------------------
Index  LANGID  String
0x00   0x0000  0x0409
0x01   0x0409  "Sierra Wireless, Incorporated"
0x02   0x0409  "MC7304"
0x03   0x0409  "0123456789ABCDEF"

***************************
AT!UDUSBCOMP=24 (DM, NMEA, MODEM, RMNET1, RMNET2, RMNET3)

MC7304 VID=0x1199 PID=0x68C0
firmware with voice support (VoLTE)
SWI9X15C_06.03.32.02 r26426 CNSHZ-AR-BUILD 2015/01/16 01:32:41

Device Descriptor:
------------------------------
0x12    bLength
0x01    bDescriptorType
0x0200  bcdUSB
0x00    bDeviceClass
0x00    bDeviceSubClass
0x00    bDeviceProtocol
0x40    bMaxPacketSize0   (64 bytes)
0x1199  idVendor
0x68C0  idProduct
0x0006  bcdDevice
0x01    iManufacturer   "Sierra Wireless, Incorporated"
0x02    iProduct   "MC7304"
0x03    iSerialNumber   "0123456789ABCDEF"
0x01    bNumConfigurations

Device Qualifier Descriptor:
------------------------------
0x0A    bLength
0x06    bDescriptorType
0x0200  bcdUSB
0x00    bDeviceClass
0x00    bDeviceSubClass
0x00    bDeviceProtocol
0x40    bMaxPacketSize0   (64 bytes)
0x01    bNumConfigurations
0x00    bReserved

Configuration Descriptor:
------------------------------
0x09    bLength
0x02    bDescriptorType
0x00C2  wTotalLength   (194 bytes)
0x06    bNumInterfaces
0x01    bConfigurationValue
0x00    iConfiguration
0xE0    bmAttributes   (Self-powered Device, Remote-Wakeup)
0xFA    bMaxPower      (500 mA)

Interface Descriptor:
------------------------------
0x09    bLength
0x04    bDescriptorType
0x00    bInterfaceNumber
0x00    bAlternateSetting
0x02    bNumEndPoints
0xFF    bInterfaceClass      (Vendor specific)
0xFF    bInterfaceSubClass
0xFF    bInterfaceProtocol
0x00    iInterface

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x81    bEndpointAddress  (IN endpoint 1)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0200  wMaxPacketSize    (512 bytes)
0x00    bInterval

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x01    bEndpointAddress  (OUT endpoint 1)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0200  wMaxPacketSize    (512 bytes)
0x00    bInterval

Interface Descriptor:
------------------------------
0x09    bLength
0x04    bDescriptorType
0x02    bInterfaceNumber
0x00    bAlternateSetting
0x02    bNumEndPoints
0xFF    bInterfaceClass      (Vendor specific)
0x00    bInterfaceSubClass
0x00    bInterfaceProtocol
0x00    iInterface

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x82    bEndpointAddress  (IN endpoint 2)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0200  wMaxPacketSize    (512 bytes)
0x00    bInterval

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x02    bEndpointAddress  (OUT endpoint 2)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0200  wMaxPacketSize    (512 bytes)
0x00    bInterval

Interface Descriptor:
------------------------------
0x09    bLength
0x04    bDescriptorType
0x03    bInterfaceNumber
0x00    bAlternateSetting
0x03    bNumEndPoints
0xFF    bInterfaceClass      (Vendor specific)
0x00    bInterfaceSubClass
0x00    bInterfaceProtocol
0x00    iInterface

Unknown Descriptor:
------------------------------
0x05    bLength
0x24    bDescriptorType
Hex dump:
0x05 0x24 0x00 0x10 0x01

Unknown Descriptor:
------------------------------
0x05    bLength
0x24    bDescriptorType
Hex dump:
0x05 0x24 0x01 0x00 0x00

Unknown Descriptor:
------------------------------
0x04    bLength
0x24    bDescriptorType
Hex dump:
0x04 0x24 0x02 0x02

Unknown Descriptor:
------------------------------
0x05    bLength
0x24    bDescriptorType
Hex dump:
0x05 0x24 0x06 0x00 0x00

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x84    bEndpointAddress  (IN endpoint 4)
0x03    bmAttributes      (Transfer: Interrupt / Synch: None / Usage: Data)
0x000C  wMaxPacketSize    (1 x 12 bytes)
0x09    bInterval         (256 microframes)

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x83    bEndpointAddress  (IN endpoint 3)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0200  wMaxPacketSize    (512 bytes)
0x00    bInterval

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x03    bEndpointAddress  (OUT endpoint 3)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0200  wMaxPacketSize    (512 bytes)
0x00    bInterval

Interface Descriptor:
------------------------------
0x09    bLength
0x04    bDescriptorType
0x08    bInterfaceNumber
0x00    bAlternateSetting
0x03    bNumEndPoints
0xFF    bInterfaceClass      (Vendor specific)
0xFF    bInterfaceSubClass
0xFF    bInterfaceProtocol
0x00    iInterface

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x86    bEndpointAddress  (IN endpoint 6)
0x03    bmAttributes      (Transfer: Interrupt / Synch: None / Usage: Data)
0x000A  wMaxPacketSize    (1 x 10 bytes)
0x09    bInterval         (256 microframes)

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x85    bEndpointAddress  (IN endpoint 5)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0200  wMaxPacketSize    (512 bytes)
0x00    bInterval

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x04    bEndpointAddress  (OUT endpoint 4)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0200  wMaxPacketSize    (512 bytes)
0x00    bInterval

Interface Descriptor:
------------------------------
0x09    bLength
0x04    bDescriptorType
0x0A    bInterfaceNumber
0x00    bAlternateSetting
0x03    bNumEndPoints
0xFF    bInterfaceClass      (Vendor specific)
0xFF    bInterfaceSubClass
0xFF    bInterfaceProtocol
0x00    iInterface

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x88    bEndpointAddress  (IN endpoint 8)
0x03    bmAttributes      (Transfer: Interrupt / Synch: None / Usage: Data)
0x000A  wMaxPacketSize    (1 x 10 bytes)
0x09    bInterval         (256 microframes)

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x87    bEndpointAddress  (IN endpoint 7)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0200  wMaxPacketSize    (512 bytes)
0x00    bInterval

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x05    bEndpointAddress  (OUT endpoint 5)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0200  wMaxPacketSize    (512 bytes)
0x00    bInterval

Interface Descriptor:
------------------------------
0x09    bLength
0x04    bDescriptorType
0x0B    bInterfaceNumber
0x00    bAlternateSetting
0x03    bNumEndPoints
0xFF    bInterfaceClass      (Vendor specific)
0xFF    bInterfaceSubClass
0xFF    bInterfaceProtocol
0x00    iInterface

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x8A    bEndpointAddress  (IN endpoint 10)
0x03    bmAttributes      (Transfer: Interrupt / Synch: None / Usage: Data)
0x000A  wMaxPacketSize    (1 x 10 bytes)
0x09    bInterval         (256 microframes)

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x89    bEndpointAddress  (IN endpoint 9)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0200  wMaxPacketSize    (512 bytes)
0x00    bInterval

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x06    bEndpointAddress  (OUT endpoint 6)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0200  wMaxPacketSize    (512 bytes)
0x00    bInterval

Other Speed Configuration Descriptor:
------------------------------
0x09    bLength
0x07    bDescriptorType
0x00C2  wTotalLength   (194 bytes)
0x06    bNumInterfaces
0x01    bConfigurationValue
0x00    iConfiguration
0xE0    bmAttributes   (Self-powered Device, Remote-Wakeup)
0xFA    bMaxPower      (500 mA)

Interface Descriptor:
------------------------------
0x09    bLength
0x04    bDescriptorType
0x00    bInterfaceNumber
0x00    bAlternateSetting
0x02    bNumEndPoints
0xFF    bInterfaceClass      (Vendor specific)
0xFF    bInterfaceSubClass
0xFF    bInterfaceProtocol
0x00    iInterface

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x81    bEndpointAddress  (IN endpoint 1)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0040  wMaxPacketSize    (64 bytes)
0x00    bInterval

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x01    bEndpointAddress  (OUT endpoint 1)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0040  wMaxPacketSize    (64 bytes)
0x00    bInterval

Interface Descriptor:
------------------------------
0x09    bLength
0x04    bDescriptorType
0x02    bInterfaceNumber
0x00    bAlternateSetting
0x02    bNumEndPoints
0xFF    bInterfaceClass      (Vendor specific)
0x00    bInterfaceSubClass
0x00    bInterfaceProtocol
0x00    iInterface

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x82    bEndpointAddress  (IN endpoint 2)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0040  wMaxPacketSize    (64 bytes)
0x00    bInterval

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x02    bEndpointAddress  (OUT endpoint 2)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0040  wMaxPacketSize    (64 bytes)
0x00    bInterval

Interface Descriptor:
------------------------------
0x09    bLength
0x04    bDescriptorType
0x03    bInterfaceNumber
0x00    bAlternateSetting
0x03    bNumEndPoints
0xFF    bInterfaceClass      (Vendor specific)
0x00    bInterfaceSubClass
0x00    bInterfaceProtocol
0x00    iInterface

Unknown Descriptor:
------------------------------
0x05    bLength
0x24    bDescriptorType
Hex dump:
0x05 0x24 0x00 0x10 0x01

Unknown Descriptor:
------------------------------
0x05    bLength
0x24    bDescriptorType
Hex dump:
0x05 0x24 0x01 0x00 0x00

Unknown Descriptor:
------------------------------
0x04    bLength
0x24    bDescriptorType
Hex dump:
0x04 0x24 0x02 0x02

Unknown Descriptor:
------------------------------
0x05    bLength
0x24    bDescriptorType
Hex dump:
0x05 0x24 0x06 0x00 0x00

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x84    bEndpointAddress  (IN endpoint 4)
0x03    bmAttributes      (Transfer: Interrupt / Synch: None / Usage: Data)
0x000C  wMaxPacketSize    (1 x 12 bytes)
0x20    bInterval         (32 frames)

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x83    bEndpointAddress  (IN endpoint 3)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0040  wMaxPacketSize    (64 bytes)
0x00    bInterval

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x03    bEndpointAddress  (OUT endpoint 3)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0040  wMaxPacketSize    (64 bytes)
0x00    bInterval

Interface Descriptor:
------------------------------
0x09    bLength
0x04    bDescriptorType
0x08    bInterfaceNumber
0x00    bAlternateSetting
0x03    bNumEndPoints
0xFF    bInterfaceClass      (Vendor specific)
0xFF    bInterfaceSubClass
0xFF    bInterfaceProtocol
0x00    iInterface

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x86    bEndpointAddress  (IN endpoint 6)
0x03    bmAttributes      (Transfer: Interrupt / Synch: None / Usage: Data)
0x000A  wMaxPacketSize    (1 x 10 bytes)
0x20    bInterval         (32 frames)

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x85    bEndpointAddress  (IN endpoint 5)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0040  wMaxPacketSize    (64 bytes)
0x00    bInterval

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x04    bEndpointAddress  (OUT endpoint 4)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0040  wMaxPacketSize    (64 bytes)
0x00    bInterval

Interface Descriptor:
------------------------------
0x09    bLength
0x04    bDescriptorType
0x0A    bInterfaceNumber
0x00    bAlternateSetting
0x03    bNumEndPoints
0xFF    bInterfaceClass      (Vendor specific)
0xFF    bInterfaceSubClass
0xFF    bInterfaceProtocol
0x00    iInterface

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x88    bEndpointAddress  (IN endpoint 8)
0x03    bmAttributes      (Transfer: Interrupt / Synch: None / Usage: Data)
0x000A  wMaxPacketSize    (1 x 10 bytes)
0x20    bInterval         (32 frames)

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x87    bEndpointAddress  (IN endpoint 7)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0040  wMaxPacketSize    (64 bytes)
0x00    bInterval

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x05    bEndpointAddress  (OUT endpoint 5)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0040  wMaxPacketSize    (64 bytes)
0x00    bInterval

Interface Descriptor:
------------------------------
0x09    bLength
0x04    bDescriptorType
0x0B    bInterfaceNumber
0x00    bAlternateSetting
0x03    bNumEndPoints
0xFF    bInterfaceClass      (Vendor specific)
0xFF    bInterfaceSubClass
0xFF    bInterfaceProtocol
0x00    iInterface

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x8A    bEndpointAddress  (IN endpoint 10)
0x03    bmAttributes      (Transfer: Interrupt / Synch: None / Usage: Data)
0x000A  wMaxPacketSize    (1 x 10 bytes)
0x20    bInterval         (32 frames)

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x89    bEndpointAddress  (IN endpoint 9)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0040  wMaxPacketSize    (64 bytes)
0x00    bInterval

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x06    bEndpointAddress  (OUT endpoint 6)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0040  wMaxPacketSize    (64 bytes)
0x00    bInterval

String Descriptor Table
--------------------------------
Index  LANGID  String
0x00   0x0000  0x0409
0x01   0x0409  "Sierra Wireless, Incorporated"
0x02   0x0409  "MC7304"
0x03   0x0409  "0123456789ABCDEF"

***************************
AT!UDUSBCOMP=25 (DM, NMEA, MODEM, AT, AUDIO)

MC7304 VID=0x1199 PID=0x68C0
firmware with voice support (VoLTE)
SWI9X15C_06.03.32.02 r26426 CNSHZ-AR-BUILD 2015/01/16 01:32:41

Device Descriptor:
------------------------------
0x12    bLength
0x01    bDescriptorType
0x0200  bcdUSB
0x00    bDeviceClass
0x00    bDeviceSubClass
0x00    bDeviceProtocol
0x40    bMaxPacketSize0   (64 bytes)
0x1199  idVendor
0x68C0  idProduct
0x0006  bcdDevice
0x01    iManufacturer   "Sierra Wireless, Incorporated"
0x02    iProduct   "MC7304"
0x03    iSerialNumber   "0123456789ABCDEF"
0x01    bNumConfigurations

Device Qualifier Descriptor:
------------------------------
0x0A    bLength
0x06    bDescriptorType
0x0200  bcdUSB
0x00    bDeviceClass
0x00    bDeviceSubClass
0x00    bDeviceProtocol
0x40    bMaxPacketSize0   (64 bytes)
0x01    bNumConfigurations
0x00    bReserved

Configuration Descriptor:
------------------------------
0x09    bLength
0x02    bDescriptorType
0x013E  wTotalLength   (318 bytes)
0x07    bNumInterfaces
0x01    bConfigurationValue
0x00    iConfiguration
0xE0    bmAttributes   (Self-powered Device, Remote-Wakeup)
0xFA    bMaxPower      (500 mA)

Interface Descriptor:
------------------------------
0x09    bLength
0x04    bDescriptorType
0x00    bInterfaceNumber
0x00    bAlternateSetting
0x02    bNumEndPoints
0xFF    bInterfaceClass      (Vendor specific)
0xFF    bInterfaceSubClass
0xFF    bInterfaceProtocol
0x00    iInterface

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x81    bEndpointAddress  (IN endpoint 1)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0200  wMaxPacketSize    (512 bytes)
0x00    bInterval

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x01    bEndpointAddress  (OUT endpoint 1)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0200  wMaxPacketSize    (512 bytes)
0x00    bInterval

Interface Descriptor:
------------------------------
0x09    bLength
0x04    bDescriptorType
0x02    bInterfaceNumber
0x00    bAlternateSetting
0x02    bNumEndPoints
0xFF    bInterfaceClass      (Vendor specific)
0x00    bInterfaceSubClass
0x00    bInterfaceProtocol
0x00    iInterface

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x82    bEndpointAddress  (IN endpoint 2)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0200  wMaxPacketSize    (512 bytes)
0x00    bInterval

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x02    bEndpointAddress  (OUT endpoint 2)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0200  wMaxPacketSize    (512 bytes)
0x00    bInterval

Interface Descriptor:
------------------------------
0x09    bLength
0x04    bDescriptorType
0x03    bInterfaceNumber
0x00    bAlternateSetting
0x03    bNumEndPoints
0xFF    bInterfaceClass      (Vendor specific)
0x00    bInterfaceSubClass
0x00    bInterfaceProtocol
0x00    iInterface

Unknown Descriptor:
------------------------------
0x05    bLength
0x24    bDescriptorType
Hex dump:
0x05 0x24 0x00 0x10 0x01

Unknown Descriptor:
------------------------------
0x05    bLength
0x24    bDescriptorType
Hex dump:
0x05 0x24 0x01 0x00 0x00

Unknown Descriptor:
------------------------------
0x04    bLength
0x24    bDescriptorType
Hex dump:
0x04 0x24 0x02 0x02

Unknown Descriptor:
------------------------------
0x05    bLength
0x24    bDescriptorType
Hex dump:
0x05 0x24 0x06 0x00 0x00

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x84    bEndpointAddress  (IN endpoint 4)
0x03    bmAttributes      (Transfer: Interrupt / Synch: None / Usage: Data)
0x000C  wMaxPacketSize    (1 x 12 bytes)
0x09    bInterval         (256 microframes)

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x83    bEndpointAddress  (IN endpoint 3)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0200  wMaxPacketSize    (512 bytes)
0x00    bInterval

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x03    bEndpointAddress  (OUT endpoint 3)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0200  wMaxPacketSize    (512 bytes)
0x00    bInterval

Interface Descriptor:
------------------------------
0x09    bLength
0x04    bDescriptorType
0x04    bInterfaceNumber
0x00    bAlternateSetting
0x03    bNumEndPoints
0xFF    bInterfaceClass      (Vendor specific)
0x00    bInterfaceSubClass
0x00    bInterfaceProtocol
0x00    iInterface

Unknown Descriptor:
------------------------------
0x05    bLength
0x24    bDescriptorType
Hex dump:
0x05 0x24 0x00 0x10 0x01

Unknown Descriptor:
------------------------------
0x05    bLength
0x24    bDescriptorType
Hex dump:
0x05 0x24 0x01 0x00 0x00

Unknown Descriptor:
------------------------------
0x04    bLength
0x24    bDescriptorType
Hex dump:
0x04 0x24 0x02 0x02

Unknown Descriptor:
------------------------------
0x05    bLength
0x24    bDescriptorType
Hex dump:
0x05 0x24 0x06 0x00 0x00

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x86    bEndpointAddress  (IN endpoint 6)
0x03    bmAttributes      (Transfer: Interrupt / Synch: None / Usage: Data)
0x000C  wMaxPacketSize    (1 x 12 bytes)
0x09    bInterval         (256 microframes)

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x85    bEndpointAddress  (IN endpoint 5)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0200  wMaxPacketSize    (512 bytes)
0x00    bInterval

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x04    bEndpointAddress  (OUT endpoint 4)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0200  wMaxPacketSize    (512 bytes)
0x00    bInterval

Interface Descriptor:
------------------------------
0x09    bLength
0x04    bDescriptorType
0x10    bInterfaceNumber
0x00    bAlternateSetting
0x00    bNumEndPoints
0x01    bInterfaceClass      (Audio Device Class)
0x01    bInterfaceSubClass   (Audio Control Interface)
0x00    bInterfaceProtocol
0x00    iInterface

AC Interface Header Descriptor:
------------------------------
0x0A    bLength
0x24    bDescriptorType
0x01    bDescriptorSubtype
0x0100  bcdADC
0x0034  wTotalLength   (52 bytes)
0x02    bInCollection
0x11    baInterfaceNr(1)
0x12    baInterfaceNr(2)

AC Input Terminal Descriptor:
------------------------------
0x0C    bLength
0x24    bDescriptorType
0x02    bDescriptorSubtype
0x01    bTerminalID
0x0201  wTerminalType   (Microphone)
0x02    bAssocTerminal
0x01    bNrChannels   (1 channels)
0x0003  wChannelConfig
0x00    iChannelNames
0x00    iTerminal

AC Output Terminal Descriptor:
------------------------------
0x09    bLength
0x24    bDescriptorType
0x03    bDescriptorSubtype
0x02    bTerminalID
0x0101  wTerminalType   (USB Streaming)
0x01    bAssocTerminal
0x01    bSourceID
0x00    iTerminal

AC Input Terminal Descriptor:
------------------------------
0x0C    bLength
0x24    bDescriptorType
0x02    bDescriptorSubtype
0x03    bTerminalID
0x0101  wTerminalType   (USB Streaming)
0x04    bAssocTerminal
0x02    bNrChannels   (2 channels)
0x0003  wChannelConfig
0x00    iChannelNames
0x00    iTerminal

AC Output Terminal Descriptor:
------------------------------
0x09    bLength
0x24    bDescriptorType
0x03    bDescriptorSubtype
0x04    bTerminalID
0x0301  wTerminalType   (Speaker)
0x03    bAssocTerminal
0x03    bSourceID
0x00    iTerminal

Interface Descriptor:
------------------------------
0x09    bLength
0x04    bDescriptorType
0x11    bInterfaceNumber
0x00    bAlternateSetting
0x00    bNumEndPoints
0x01    bInterfaceClass      (Audio Device Class)
0x02    bInterfaceSubClass   (Audio Streaming Interface)
0x00    bInterfaceProtocol
0x00    iInterface

Interface Descriptor:
------------------------------
0x09    bLength
0x04    bDescriptorType
0x11    bInterfaceNumber
0x01    bAlternateSetting
0x01    bNumEndPoints
0x01    bInterfaceClass      (Audio Device Class)
0x02    bInterfaceSubClass   (Audio Streaming Interface)
0x00    bInterfaceProtocol
0x00    iInterface

AS Interface Descriptor:
------------------------------
0x07    bLength
0x24    bDescriptorType
0x01    bDescriptorSubtype
0x02    bTerminalLink
0x01    bDelay
0x0001  wFormatTag   (PCM)

AS Format Type 1 Descriptor:
------------------------------
0x0B    bLength
0x24    bDescriptorType
0x02    bDescriptorSubtype
0x01    bFormatType   (FORMAT_TYPE_1)
0x01    bNrChannels   (1 channels)
0x02    bSubframeSize
0x10    bBitResolution   (16 bits per sample)
0x01    bSamFreqType   (Discrete sampling frequencies)
0x001F40        tSamFreq(1)   (8000 Hz)

Endpoint Descriptor (Audio/MIDI 1.0):
------------------------------
0x09    bLength
0x05    bDescriptorType
0x87    bEndpointAddress  (IN endpoint 7)
0x05    bmAttributes      (Transfer: Isochronous / Synch: Asynchronous /
Usage: Data)
0x0010  wMaxPacketSize    (1 x 16 bytes)
0x04    bInterval         (8 microframes)
0x00    bRefresh
0x00    bSynchAddress

AS Isochronous Data Endpoint Descriptor:
------------------------------
0x07    bLength
0x25    bDescriptorType
0x01    bDescriptorSubtype
0x01    bmAttributes   (Sampling Frequency)
0x01    bLockDelayUnits   (milliseconds)
0x0001  wLockDelay

Interface Descriptor:
------------------------------
0x09    bLength
0x04    bDescriptorType
0x12    bInterfaceNumber
0x00    bAlternateSetting
0x00    bNumEndPoints
0x01    bInterfaceClass      (Audio Device Class)
0x02    bInterfaceSubClass   (Audio Streaming Interface)
0x00    bInterfaceProtocol
0x00    iInterface

Interface Descriptor:
------------------------------
0x09    bLength
0x04    bDescriptorType
0x12    bInterfaceNumber
0x01    bAlternateSetting
0x01    bNumEndPoints
0x01    bInterfaceClass      (Audio Device Class)
0x02    bInterfaceSubClass   (Audio Streaming Interface)
0x00    bInterfaceProtocol
0x00    iInterface

AS Interface Descriptor:
------------------------------
0x07    bLength
0x24    bDescriptorType
0x01    bDescriptorSubtype
0x03    bTerminalLink
0x01    bDelay
0x0001  wFormatTag   (PCM)

AS Format Type 1 Descriptor:
------------------------------
0x0B    bLength
0x24    bDescriptorType
0x02    bDescriptorSubtype
0x01    bFormatType   (FORMAT_TYPE_1)
0x02    bNrChannels   (2 channels)
0x02    bSubframeSize
0x10    bBitResolution   (16 bits per sample)
0x01    bSamFreqType   (Discrete sampling frequencies)
0x001F40        tSamFreq(1)   (8000 Hz)

Endpoint Descriptor (Audio/MIDI 1.0):
------------------------------
0x09    bLength
0x05    bDescriptorType
0x05    bEndpointAddress  (OUT endpoint 5)
0x09    bmAttributes      (Transfer: Isochronous / Synch: Adaptive / Usage:
Data)
0x0020  wMaxPacketSize    (1 x 32 bytes)
0x04    bInterval         (8 microframes)
0x00    bRefresh
0x00    bSynchAddress

AS Isochronous Data Endpoint Descriptor:
------------------------------
0x07    bLength
0x25    bDescriptorType
0x01    bDescriptorSubtype
0x01    bmAttributes   (Sampling Frequency)
0x01    bLockDelayUnits   (milliseconds)
0x0001  wLockDelay

Other Speed Configuration Descriptor:
------------------------------
0x09    bLength
0x07    bDescriptorType
0x013E  wTotalLength   (318 bytes)
0x07    bNumInterfaces
0x01    bConfigurationValue
0x00    iConfiguration
0xE0    bmAttributes   (Self-powered Device, Remote-Wakeup)
0xFA    bMaxPower      (500 mA)

Interface Descriptor:
------------------------------
0x09    bLength
0x04    bDescriptorType
0x00    bInterfaceNumber
0x00    bAlternateSetting
0x02    bNumEndPoints
0xFF    bInterfaceClass      (Vendor specific)
0xFF    bInterfaceSubClass
0xFF    bInterfaceProtocol
0x00    iInterface

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x81    bEndpointAddress  (IN endpoint 1)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0040  wMaxPacketSize    (64 bytes)
0x00    bInterval

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x01    bEndpointAddress  (OUT endpoint 1)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0040  wMaxPacketSize    (64 bytes)
0x00    bInterval

Interface Descriptor:
------------------------------
0x09    bLength
0x04    bDescriptorType
0x02    bInterfaceNumber
0x00    bAlternateSetting
0x02    bNumEndPoints
0xFF    bInterfaceClass      (Vendor specific)
0x00    bInterfaceSubClass
0x00    bInterfaceProtocol
0x00    iInterface

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x82    bEndpointAddress  (IN endpoint 2)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0040  wMaxPacketSize    (64 bytes)
0x00    bInterval

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x02    bEndpointAddress  (OUT endpoint 2)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0040  wMaxPacketSize    (64 bytes)
0x00    bInterval

Interface Descriptor:
------------------------------
0x09    bLength
0x04    bDescriptorType
0x03    bInterfaceNumber
0x00    bAlternateSetting
0x03    bNumEndPoints
0xFF    bInterfaceClass      (Vendor specific)
0x00    bInterfaceSubClass
0x00    bInterfaceProtocol
0x00    iInterface

Unknown Descriptor:
------------------------------
0x05    bLength
0x24    bDescriptorType
Hex dump:
0x05 0x24 0x00 0x10 0x01

Unknown Descriptor:
------------------------------
0x05    bLength
0x24    bDescriptorType
Hex dump:
0x05 0x24 0x01 0x00 0x00

Unknown Descriptor:
------------------------------
0x04    bLength
0x24    bDescriptorType
Hex dump:
0x04 0x24 0x02 0x02

Unknown Descriptor:
------------------------------
0x05    bLength
0x24    bDescriptorType
Hex dump:
0x05 0x24 0x06 0x00 0x00

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x84    bEndpointAddress  (IN endpoint 4)
0x03    bmAttributes      (Transfer: Interrupt / Synch: None / Usage: Data)
0x000C  wMaxPacketSize    (1 x 12 bytes)
0x20    bInterval         (32 frames)

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x83    bEndpointAddress  (IN endpoint 3)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0040  wMaxPacketSize    (64 bytes)
0x00    bInterval

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x03    bEndpointAddress  (OUT endpoint 3)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0040  wMaxPacketSize    (64 bytes)
0x00    bInterval

Interface Descriptor:
------------------------------
0x09    bLength
0x04    bDescriptorType
0x04    bInterfaceNumber
0x00    bAlternateSetting
0x03    bNumEndPoints
0xFF    bInterfaceClass      (Vendor specific)
0x00    bInterfaceSubClass
0x00    bInterfaceProtocol
0x00    iInterface

Unknown Descriptor:
------------------------------
0x05    bLength
0x24    bDescriptorType
Hex dump:
0x05 0x24 0x00 0x10 0x01

Unknown Descriptor:
------------------------------
0x05    bLength
0x24    bDescriptorType
Hex dump:
0x05 0x24 0x01 0x00 0x00

Unknown Descriptor:
------------------------------
0x04    bLength
0x24    bDescriptorType
Hex dump:
0x04 0x24 0x02 0x02

Unknown Descriptor:
------------------------------
0x05    bLength
0x24    bDescriptorType
Hex dump:
0x05 0x24 0x06 0x00 0x00

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x86    bEndpointAddress  (IN endpoint 6)
0x03    bmAttributes      (Transfer: Interrupt / Synch: None / Usage: Data)
0x000C  wMaxPacketSize    (1 x 12 bytes)
0x20    bInterval         (32 frames)

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x85    bEndpointAddress  (IN endpoint 5)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0040  wMaxPacketSize    (64 bytes)
0x00    bInterval

Endpoint Descriptor:
------------------------------
0x07    bLength
0x05    bDescriptorType
0x04    bEndpointAddress  (OUT endpoint 4)
0x02    bmAttributes      (Transfer: Bulk / Synch: None / Usage: Data)
0x0040  wMaxPacketSize    (64 bytes)
0x00    bInterval

Interface Descriptor:
------------------------------
0x09    bLength
0x04    bDescriptorType
0x10    bInterfaceNumber
0x00    bAlternateSetting
0x00    bNumEndPoints
0x01    bInterfaceClass      (Audio Device Class)
0x01    bInterfaceSubClass   (Audio Control Interface)
0x00    bInterfaceProtocol
0x00    iInterface

AC Interface Header Descriptor:
------------------------------
0x0A    bLength
0x24    bDescriptorType
0x01    bDescriptorSubtype
0x0100  bcdADC
0x0034  wTotalLength   (52 bytes)
0x02    bInCollection
0x11    baInterfaceNr(1)
0x12    baInterfaceNr(2)

AC Input Terminal Descriptor:
------------------------------
0x0C    bLength
0x24    bDescriptorType
0x02    bDescriptorSubtype
0x01    bTerminalID
0x0201  wTerminalType   (Microphone)
0x02    bAssocTerminal
0x01    bNrChannels   (1 channels)
0x0003  wChannelConfig
0x00    iChannelNames
0x00    iTerminal

AC Output Terminal Descriptor:
------------------------------
0x09    bLength
0x24    bDescriptorType
0x03    bDescriptorSubtype
0x02    bTerminalID
0x0101  wTerminalType   (USB Streaming)
0x01    bAssocTerminal
0x01    bSourceID
0x00    iTerminal

AC Input Terminal Descriptor:
------------------------------
0x0C    bLength
0x24    bDescriptorType
0x02    bDescriptorSubtype
0x03    bTerminalID
0x0101  wTerminalType   (USB Streaming)
0x04    bAssocTerminal
0x02    bNrChannels   (2 channels)
0x0003  wChannelConfig
0x00    iChannelNames
0x00    iTerminal

AC Output Terminal Descriptor:
------------------------------
0x09    bLength
0x24    bDescriptorType
0x03    bDescriptorSubtype
0x04    bTerminalID
0x0301  wTerminalType   (Speaker)
0x03    bAssocTerminal
0x03    bSourceID
0x00    iTerminal

Interface Descriptor:
------------------------------
0x09    bLength
0x04    bDescriptorType
0x11    bInterfaceNumber
0x00    bAlternateSetting
0x00    bNumEndPoints
0x01    bInterfaceClass      (Audio Device Class)
0x02    bInterfaceSubClass   (Audio Streaming Interface)
0x00    bInterfaceProtocol
0x00    iInterface

Interface Descriptor:
------------------------------
0x09    bLength
0x04    bDescriptorType
0x11    bInterfaceNumber
0x01    bAlternateSetting
0x01    bNumEndPoints
0x01    bInterfaceClass      (Audio Device Class)
0x02    bInterfaceSubClass   (Audio Streaming Interface)
0x00    bInterfaceProtocol
0x00    iInterface

AS Interface Descriptor:
------------------------------
0x07    bLength
0x24    bDescriptorType
0x01    bDescriptorSubtype
0x02    bTerminalLink
0x01    bDelay
0x0001  wFormatTag   (PCM)

AS Format Type 1 Descriptor:
------------------------------
0x0B    bLength
0x24    bDescriptorType
0x02    bDescriptorSubtype
0x01    bFormatType   (FORMAT_TYPE_1)
0x01    bNrChannels   (1 channels)
0x02    bSubframeSize
0x10    bBitResolution   (16 bits per sample)
0x01    bSamFreqType   (Discrete sampling frequencies)
0x001F40        tSamFreq(1)   (8000 Hz)

Endpoint Descriptor (Audio/MIDI 1.0):
------------------------------
0x09    bLength
0x05    bDescriptorType
0x87    bEndpointAddress  (IN endpoint 7)
0x05    bmAttributes      (Transfer: Isochronous / Synch: Asynchronous /
Usage: Data)
0x0010  wMaxPacketSize    (1 x 16 bytes)
0x04    bInterval         (8 frames)
0x00    bRefresh
0x00    bSynchAddress

AS Isochronous Data Endpoint Descriptor:
------------------------------
0x07    bLength
0x25    bDescriptorType
0x01    bDescriptorSubtype
0x01    bmAttributes   (Sampling Frequency)
0x01    bLockDelayUnits   (milliseconds)
0x0001  wLockDelay

Interface Descriptor:
------------------------------
0x09    bLength
0x04    bDescriptorType
0x12    bInterfaceNumber
0x00    bAlternateSetting
0x00    bNumEndPoints
0x01    bInterfaceClass      (Audio Device Class)
0x02    bInterfaceSubClass   (Audio Streaming Interface)
0x00    bInterfaceProtocol
0x00    iInterface

Interface Descriptor:
------------------------------
0x09    bLength
0x04    bDescriptorType
0x12    bInterfaceNumber
0x01    bAlternateSetting
0x01    bNumEndPoints
0x01    bInterfaceClass      (Audio Device Class)
0x02    bInterfaceSubClass   (Audio Streaming Interface)
0x00    bInterfaceProtocol
0x00    iInterface

AS Interface Descriptor:
------------------------------
0x07    bLength
0x24    bDescriptorType
0x01    bDescriptorSubtype
0x03    bTerminalLink
0x01    bDelay
0x0001  wFormatTag   (PCM)

AS Format Type 1 Descriptor:
------------------------------
0x0B    bLength
0x24    bDescriptorType
0x02    bDescriptorSubtype
0x01    bFormatType   (FORMAT_TYPE_1)
0x02    bNrChannels   (2 channels)
0x02    bSubframeSize
0x10    bBitResolution   (16 bits per sample)
0x01    bSamFreqType   (Discrete sampling frequencies)
0x001F40        tSamFreq(1)   (8000 Hz)

Endpoint Descriptor (Audio/MIDI 1.0):
------------------------------
0x09    bLength
0x05    bDescriptorType
0x05    bEndpointAddress  (OUT endpoint 5)
0x09    bmAttributes      (Transfer: Isochronous / Synch: Adaptive / Usage:
Data)
0x0020  wMaxPacketSize    (1 x 32 bytes)
0x04    bInterval         (8 frames)
0x00    bRefresh
0x00    bSynchAddress

AS Isochronous Data Endpoint Descriptor:
------------------------------
0x07    bLength
0x25    bDescriptorType
0x01    bDescriptorSubtype
0x01    bmAttributes   (Sampling Frequency)
0x01    bLockDelayUnits   (milliseconds)
0x0001  wLockDelay

String Descriptor Table
--------------------------------
Index  LANGID  String
0x00   0x0000  0x0409
0x01   0x0409  "Sierra Wireless, Incorporated"
0x02   0x0409  "MC7304"
0x03   0x0409  "0123456789ABCDEF"

On 8/16/2018 1:56 PM, Denis wrote:
> I can change AT!UDUSBCOMP modes for MC7304 and MC7455 I have in production.
> 
> But how to make full dump of all the USB device descriptors for each
> UDUSBCOMP mode? Can I make it by usbdevs -vvvv or how?
> 
> Denis
> 
> On 8/15/2018 5:41 PM, Mark Kettenis wrote:
>>> Date: Wed, 15 Aug 2018 09:56:50 +0100
>>> From: Stuart Henderson <[email protected]>
>>>
>>> On 2018/08/14 18:43, Bryan Vyhmeister wrote:
>>>> On Tue, Aug 14, 2018 at 05:53:43PM +0300, Denis wrote:
>>>>> Most of modern modems have serial discipline ports and USB Mobile
>>>>> Broadband Interface Model (MBIM) interface in some port compositions
>>>>> simultaneously. It seems very useful to have different disciplines
>>>>> supported by umsm(4) and umb(4) drivers on the same device.
>>>>>
>>>> <snip>
>>>>>
>>>>> Does it possible to have simultaneously operated AT + NMEA ports by
>>>>> umsm(4)driver and MBIM interface by umb(4) driver on the same MC7304
>>>>> device in 6.3?
>>>>
>>>> What is the advantage in having a device attach to both umsm(4) and
>>>> umb(4)? What are you trying to accomplish? The EM7455 worked perfectly
>>>> with umb(4) until your previous umsm(4) diff and now it only attaches as
>>>> umsm(4). Are you wanting to send SMS messages or something like that
>>>> with your devices?
>>>>
>>>> Bryan
>>>>
>>>
>>> Denis has a good point because umsm is needed for GPS and as you
>>> suggest SMS.
>>>
>>> What determines which driver attaches when a device is supported by
>>> multiple drivers? Perhaps the simplest option without more complex work
>>> to support different interfaces on different drivers would be to have
>>> the device attach to umb by default but attach to umsm instead if umb is
>>> disabled in the kernel. Then at least a standard kernel could be used
>>> with "disable umb" from boot config.
>>
>> The return value from the "match" function determines which driver
>> attaches.  The driver that returns the highest value wins.
>>
>> However, matching for USB devices is complicated.  Drivers already use
>> different return values (the UMATCH_* constants).  On top of that
>> drivers can claim a whole device or claim just a particular interface
>> of a device.  This requires some careful though to make sure the right
>> driver attaches.
>>
>> What we really need is a full dump of the usb device descriptors,
>> preferably in all the different UDUSBCOMP modes.
>>
> 

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