---===>Device Information<===---
English product name: "VOIP USB Phone           "

ConnectionStatus:                  
Current Config Value:              0x01  -> Device Bus Speed: Full
Device Address:                    0x02
Open Pipes:                           1

          ===>Endpoint Descriptor<===
bLength:                           0x07
bDescriptorType:                   0x05
bEndpointAddress:                  0x81  -> Direction: IN - EndpointID: 1
bmAttributes:                      0x03  -> Interrupt Transfer Type
wMaxPacketSize:                  0x0010 = 0x10 bytes
bInterval:                         0x14

          ===>Device Descriptor<===
bLength:                           0x12
bDescriptorType:                   0x01
bcdUSB:                          0x0100
bDeviceClass:                      0x00  -> This is an Interface Class Defined Device
bDeviceSubClass:                   0x00
bDeviceProtocol:                   0x00
bMaxPacketSize0:                   0x40 = (64) Bytes
idVendor:                        0x6993idProduct:                       0xB001
bcdDevice:                       0x0110
iManufacturer:                     0x01
     English (United States)  "Yealink Network Technology Ltd."
iProduct:                          0x02
     English (United States)  "VOIP USB Phone           "
iSerialNumber:                     0x05
     English (United States)  "????"
bNumConfigurations:                0x01

          ===>Configuration Descriptor<===
bLength:                           0x09
bDescriptorType:                   0x02
wTotalLength:                    0x00DD  -> Validated
bNumInterfaces:                    0x04
bConfigurationValue:               0x01
iConfiguration:                    0x00
bmAttributes:                      0x80  -> Bus Powered
MaxPower:                          0x64 = 200 mA

          ===>Interface Descriptor<===
bLength:                           0x09
bDescriptorType:                   0x04
bInterfaceNumber:                  0x00
bAlternateSetting:                 0x00
bNumEndpoints:                     0x00
bInterfaceClass:                   0x01  -> Audio Interface Class
bInterfaceSubClass:                0x01  -> Audio Control Interface SubClass
bInterfaceProtocol:                0x00
CAUTION:  This may be an invalid bInterfaceProtocol
iInterface:                        0x03
     English (United States)  "USB Audio Device        "

          ===>Audio Control Interface Header Descriptor<===
bLength:                           0x0A
bDescriptorType:                   0x24
bDescriptorSubtype:                0x01
bcdADC:                          0x0100
wTotalLength:                    0x004A
bInCollection:                     0x02
baInterfaceNr[1]:                  0x01
baInterfaceNr[2]:                  0x02

          ===>Audio Control Input Terminal Descriptor<===
bLength:                           0x0C
bDescriptorType:                   0x24
bDescriptorSubtype:                0x02
bTerminalID:                       0x01
wTerminalType:                   0x0201 (Microphone)
bAssocTerminal:                    0x00
bNrChannels:                       0x01
wChannelConfig:                  0x0000
iChannelNames:                     0x00
iTerminal:                         0x00

          ===>Audio Control Input Terminal Descriptor<===
bLength:                           0x0C
bDescriptorType:                   0x24
bDescriptorSubtype:                0x02
bTerminalID:                       0x02
wTerminalType:                   0x0101 (USB streaming)
bAssocTerminal:                    0x00
bNrChannels:                       0x01
wChannelConfig:                  0x0000
iChannelNames:                     0x00
iTerminal:                         0x00

          ===>Audio Control Output Terminal Descriptor<===
bLength:                           0x09
bDescriptorType:                   0x24
bDescriptorSubtype:                0x03
bTerminalID:                       0x03
wTerminalType:                   0x0301 (Speaker)
bAssocTerminal:                    0x00
bSourceID:                         0x06
iTerminal:                         0x00

          ===>Audio Control Output Terminal Descriptor<===
bLength:                           0x09
bDescriptorType:                   0x24
bDescriptorSubtype:                0x03
bTerminalID:                       0x04
wTerminalType:                   0x0101 (USB streaming)
bAssocTerminal:                    0x00
bSourceID:                         0x05
iTerminal:                         0x00

          ===>Audio Control Feature Unit Descriptor<===
bLength:                           0x0B
bDescriptorType:                   0x24
bDescriptorSubtype:                0x06
bUnitID:                           0x05
bSourceID:                         0x01
bControlSize:                      0x02
bmaControls[0]:
03 00 
bmaControls[1]:
03 00 
iFeature:                          0x00

          ===>Audio Control Feature Unit Descriptor<===
bLength:                           0x0B
bDescriptorType:                   0x24
bDescriptorSubtype:                0x06
bUnitID:                           0x06
bSourceID:                         0x02
bControlSize:                      0x02
bmaControls[0]:
03 00 
bmaControls[1]:
03 00 
iFeature:                          0x00

          ===>Interface Descriptor<===
bLength:                           0x09
bDescriptorType:                   0x04
bInterfaceNumber:                  0x01
bAlternateSetting:                 0x00
bNumEndpoints:                     0x00
bInterfaceClass:                   0x01  -> Audio Interface Class
bInterfaceSubClass:                0x02  -> Audio Streaming Interface SubClass
bInterfaceProtocol:                0x00
CAUTION:  This may be an invalid bInterfaceProtocol
iInterface:                        0x04
     English (United States)  "USB HID Device        "

          ===>Interface Descriptor<===
bLength:                           0x09
bDescriptorType:                   0x04
bInterfaceNumber:                  0x01
bAlternateSetting:                 0x01
bNumEndpoints:                     0x01
bInterfaceClass:                   0x01  -> Audio Interface Class
bInterfaceSubClass:                0x02  -> Audio Streaming Interface SubClass
bInterfaceProtocol:                0x00
CAUTION:  This may be an invalid bInterfaceProtocol
iInterface:                        0x04
     English (United States)  "USB HID Device        "

          ===>Audio Streaming Class Specific Interface Descriptor<===
bLength:                           0x07
bDescriptorType:                   0x24
bDescriptorSubtype:                0x01
bTerminalLink:                     0x04
bDelay:                            0x01
wFormatTag:                      0x0001 (PCM)

          ===>Audio Streaming Format Type Descriptor<===
bLength:                           0x0B
bDescriptorType:                   0x24
bDescriptorSubtype:                0x02
bFormatType:                       0x01
bNrChannels:                       0x01
bSubframeSize:                     0x02
bBitResolution:                    0x10
bSamFreqType:                      0x01
tSamFreq[1]:                   0x001F40 (8000 Hz)

          ===>Endpoint Descriptor<===
bLength:                           0x09
bDescriptorType:                   0x05
bEndpointAddress:                  0x88  -> Direction: IN - EndpointID: 8
bmAttributes:                      0x01  -> Isochronous Transfer Type
                   Synchronization Type = No Synchronization
Bulk Transfer Type
wMaxPacketSize:                  0x0010 = 0x10 bytes
wInterval:                       0x0001
bSyncAddress:                      0x00

          ===>Audio Streaming Class Specific Audio Data Endpoint Descriptor<===
bLength:                           0x07
bDescriptorType:                   0x25
bDescriptorSubtype:                0x01
bmAttributes:                      0x00
bLockDelayUnits:                   0x00
wLockDelay:                      0x0000

          ===>Interface Descriptor<===
bLength:                           0x09
bDescriptorType:                   0x04
bInterfaceNumber:                  0x02
bAlternateSetting:                 0x00
bNumEndpoints:                     0x00
bInterfaceClass:                   0x01  -> Audio Interface Class
bInterfaceSubClass:                0x02  -> Audio Streaming Interface SubClass
bInterfaceProtocol:                0x00
CAUTION:  This may be an invalid bInterfaceProtocol
iInterface:                        0x04
     English (United States)  "USB HID Device        "

          ===>Interface Descriptor<===
bLength:                           0x09
bDescriptorType:                   0x04
bInterfaceNumber:                  0x02
bAlternateSetting:                 0x01
bNumEndpoints:                     0x01
bInterfaceClass:                   0x01  -> Audio Interface Class
bInterfaceSubClass:                0x02  -> Audio Streaming Interface SubClass
bInterfaceProtocol:                0x00
CAUTION:  This may be an invalid bInterfaceProtocol
iInterface:                        0x04
     English (United States)  "USB HID Device        "

          ===>Audio Streaming Class Specific Interface Descriptor<===
bLength:                           0x07
bDescriptorType:                   0x24
bDescriptorSubtype:                0x01
bTerminalLink:                     0x02
bDelay:                            0x01
wFormatTag:                      0x0001 (PCM)

          ===>Audio Streaming Format Type Descriptor<===
bLength:                           0x0B
bDescriptorType:                   0x24
bDescriptorSubtype:                0x02
bFormatType:                       0x01
bNrChannels:                       0x01
bSubframeSize:                     0x02
bBitResolution:                    0x10
bSamFreqType:                      0x01
tSamFreq[1]:                   0x001F40 (8000 Hz)

          ===>Endpoint Descriptor<===
bLength:                           0x09
bDescriptorType:                   0x05
bEndpointAddress:                  0x08  -> Direction: OUT - EndpointID: 8
bmAttributes:                      0x01  -> Isochronous Transfer Type
                   Synchronization Type = No Synchronization
Bulk Transfer Type
wMaxPacketSize:                  0x0010 = 0x10 bytes
wInterval:                       0x0001
bSyncAddress:                      0x00

          ===>Audio Streaming Class Specific Audio Data Endpoint Descriptor<===
bLength:                           0x07
bDescriptorType:                   0x25
bDescriptorSubtype:                0x01
bmAttributes:                      0x00
bLockDelayUnits:                   0x00
wLockDelay:                      0x0000

          ===>Interface Descriptor<===
bLength:                           0x09
bDescriptorType:                   0x04
bInterfaceNumber:                  0x03
bAlternateSetting:                 0x00
bNumEndpoints:                     0x01
bInterfaceClass:                   0x03  -> HID Interface Class
bInterfaceSubClass:                0x00
bInterfaceProtocol:                0x00
CAUTION:  This may be an invalid bInterfaceProtocol
iInterface:                        0x02
     English (United States)  "VOIP USB Phone           "

          ===>HID Descriptor<===
bLength:                           0x09
bDescriptorType:                   0x21
bcdHID:                          0x0100
bCountryCode:                      0x00
bNumDescriptors:                   0x01
bDescriptorType:                   0x22
wDescriptorLength:               0x0027

          ===>Endpoint Descriptor<===
bLength:                           0x07
bDescriptorType:                   0x05
bEndpointAddress:                  0x81  -> Direction: IN - EndpointID: 1
bmAttributes:                      0x03  -> Interrupt Transfer Type
wMaxPacketSize:                  0x0010 = 0x10 bytes
bInterval:                         0x14