0742:200a — ISDN TA [HFC-S]

This is the USB identifier for a ISDN TA [HFC-S] manufactured by Stollmann. The vendor ID 0742 is registered to Stollmann with the USB Implementers Forum, and 200a is the product ID that Stollmann assigned to this particular model. When you run lsusb on Linux, this device appears as 0742:200a Stollmann ISDN TA [HFC-S].

Linux

$ lsusb
Bus 001 Device 004: ID 0742:200a Stollmann ISDN TA [HFC-S]

You can filter directly with lsusb -d 0742:200a, or get the full descriptor dump with lsusb -v -d 0742:200a. Kernel messages from dmesg show the same pair as idVendor=0742, idProduct=200a.

Windows

In Device Manager, open the device, go to Details → Hardware Ids. This device reports:

USB\VID_0742&PID_200A
USB\VID_0742&PID_200A&REV_0100

From PowerShell: Get-PnpDevice | Where-Object InstanceId -match "VID_0742&PID_200A"

macOS

$ system_profiler SPUSBDataType
    ISDN TA [HFC-S]:
      Product ID: 0x200a
      Vendor ID: 0x0742  (Stollmann)

Having driver issues with this device? Most USB devices are handled by a generic class driver; if yours shows up as an unknown device, confirm the ID above first, then check the manufacturer's downloads page.

The exact lines this page is generated from, in the upstream source file:

0742  Stollmann
	200a  ISDN TA [HFC-S]

• 0742:2008 ISDN TA [HFC-S]
• 0742:2009 ISDN TA [HFC-S]

See all 3 devices from Stollmann →