Yealink DECT USB dongle DD10K¶

This is a small USB dongle that can be plugged into certain Yealink VoIP phones in order to attach DECT based headsets.
Yealink-DECT-USB-dongle-productinfo.pdf

It's based on the DSPgroup DCX81 (DCX81AC0CFAE3FNC)

Hardware¶

USB¶

dmesg

usb 2-1: new full-speed USB device number 2 using xhci_hcd
usb 2-1: New USB device found, idVendor=6993, idProduct=b10f, bcdDevice= 1.01
usb 2-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 2-1: Product: Dect-USB-Dongle
usb 2-1: Manufacturer: Yealink
usb 2-1: SerialNumber: Yealink-Serial
cdc_acm 2-1:1.0: More than one union descriptor, skipping ...
cdc_acm 2-1:1.0: ttyACM0: USB ACM device
usbcore: registered new interface driver cdc_acm
cdc_acm: USB Abstract Control Model driver for USB modems and ISDN adapters
usb 2-1: USB disconnect, device number 2
usb 2-1: new full-speed USB device number 3 using xhci_hcd
usb 2-1: New USB device found, idVendor=6993, idProduct=b103, bcdDevice= 1.11
usb 2-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 2-1: Product: Dect-USB-Dongle
usb 2-1: Manufacturer: Yealink
usb 2-1: SerialNumber: Yealink-Serial
cdc_acm 2-1:1.0: More than one union descriptor, skipping ...
cdc_acm 2-1:1.0: ttyACM0: USB ACM device

lsusb

Bus 002 Device 003: ID 6993:b103 Yealink Network Technology Co., Ltd. Dect-USB-Dongle
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass          239 Miscellaneous Device
  bDeviceSubClass         2·
  bDeviceProtocol         1 Interface Association
  bMaxPacketSize0        64
  idVendor           0x6993 Yealink Network Technology Co., Ltd.
  idProduct          0xb103·
  bcdDevice            1.11
  iManufacturer           1 Yealink
  iProduct                2 Dect-USB-Dongle
  iSerial                 3 Yealink-Serial
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength       0x012b
    bNumInterfaces          5
    bConfigurationValue     1
    iConfiguration          0·
    bmAttributes         0x80
      (Bus Powered)
    MaxPower              400mA
    Interface Association:
      bLength                 8
      bDescriptorType        11
      bFirstInterface         0
      bInterfaceCount         2
      bFunctionClass          2 Communications
      bFunctionSubClass       2 Abstract (modem)
      bFunctionProtocol       1 AT-commands (v.25ter)
      iFunction               8 Yealink-CDC-D79
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           1
      bInterfaceClass         2 Communications
      bInterfaceSubClass      2 Abstract (modem)
      bInterfaceProtocol      1 AT-commands (v.25ter)
      iInterface              8 Yealink-CDC-D79
      CDC Header:
        bcdCDC               1.10
      CDC Union:
        bMasterInterface        0
        bSlaveInterface         1·
      CDC Call Management:
        bmCapabilities       0x01
          call management
        bDataInterface          1
      CDC ACM:
        bmCapabilities       0x02
          line coding and serial state
      CDC Union:
        bMasterInterface        170
        bSlaveInterface         1·
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0008  1x 8 bytes
        bInterval              10
   Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       0
      bNumEndpoints           2
      bInterfaceClass        10 CDC Data
      bInterfaceSubClass      0·
      bInterfaceProtocol      0·
      iInterface              0·
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x02  EP 2 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x82  EP 2 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               0
    Interface Association:
      bLength                 8
      bDescriptorType        11
      bFirstInterface         2
      bInterfaceCount         3
      bFunctionClass        255 Vendor Specific Class
      bFunctionSubClass       1·
      bFunctionProtocol       0·
      iFunction               4 Yealink-LINE1
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        2
      bAlternateSetting       0
      bNumEndpoints           0
      bInterfaceClass       255 Vendor Specific Class
      bInterfaceSubClass      1·
      bInterfaceProtocol      0·
      iInterface              4 Yealink-LINE1
      ** UNRECOGNIZED:  0a 24 01 00 01 62 00 02 03 04
      ** UNRECOGNIZED:  0c 24 02 01 01 01 00 01 04 00 00 00
      ** UNRECOGNIZED:  0c 24 02 04 01 02 00 01 04 00 00 00
      ** UNRECOGNIZED:  0b 24 06 02 08 02 03 00 00 00 00
      ** UNRECOGNIZED:  0b 24 06 05 04 02 03 00 00 00 00
      ** UNRECOGNIZED:  0b 24 06 07 04 02 03 00 00 00 00
      ** UNRECOGNIZED:  0d 24 04 08 02 01 07 01 04 00 00 00 00
      ** UNRECOGNIZED:  09 24 03 03 02 03 00 02 00
      ** UNRECOGNIZED:  09 24 03 06 01 01 00 05 00
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        3
      bAlternateSetting       0
      bNumEndpoints           0
      bInterfaceClass       255 Vendor Specific Class
      bInterfaceSubClass      2·
      bInterfaceProtocol      0·
      iInterface              0·
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        3
      bAlternateSetting       1
      bNumEndpoints           1
      bInterfaceClass       255 Vendor Specific Class
      bInterfaceSubClass      2·
      bInterfaceProtocol      0·
      iInterface              0·
      ** UNRECOGNIZED:  07 24 01 01 00 01 00
      ** UNRECOGNIZED:  0b 24 02 01 01 02 10 01 00 77 01
      Endpoint Descriptor:
        bLength                 9
        bDescriptorType         5
        bEndpointAddress     0x06  EP 6 OUT
        bmAttributes            1
          Transfer Type            Isochronous
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x00c0  1x 192 bytes
        bInterval               1
        bRefresh                0
        bSynchAddress           0
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        4
      bAlternateSetting       0
      bNumEndpoints           0
      bInterfaceClass       255 Vendor Specific Class
      bInterfaceSubClass      2·
      bInterfaceProtocol      0·
      iInterface              0·
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        4
      bAlternateSetting       1
      bNumEndpoints           1
      bInterfaceClass       255 Vendor Specific Class
      bInterfaceSubClass      2·
      bInterfaceProtocol      0·
      iInterface              0·
      ** UNRECOGNIZED:  07 24 01 06 00 01 00
      ** UNRECOGNIZED:  0b 24 02 01 01 02 10 01 00 77 01
      Endpoint Descriptor:
        bLength                 9
        bDescriptorType         5
        bEndpointAddress     0x86  EP 6 IN
        bmAttributes            1
          Transfer Type            Isochronous
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x00c0  1x 192 bytes
        bInterval               1
        bRefresh                0
        bSynchAddress           0
can't get device qualifier: Resource temporarily unavailable
can't get debug descriptor: Resource temporarily unavailable
Device Status:     0x0000
  (Bus Powered)