0742:2009 — 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 2009 is the product ID that Stollmann assigned to this particular model. When you run lsusb on Linux, this device appears as 0742:2009 Stollmann ISDN TA [HFC-S].

Linux

$ lsusb
Bus 001 Device 004: ID 0742:2009 Stollmann ISDN TA [HFC-S]

You can filter directly with lsusb -d 0742:2009, or get the full descriptor dump with lsusb -v -d 0742:2009. Kernel messages from dmesg show the same pair as idVendor=0742, idProduct=2009.

Windows

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

USB\VID_0742&PID_2009
USB\VID_0742&PID_2009&REV_0100

From PowerShell: Get-PnpDevice | Where-Object InstanceId -match "VID_0742&PID_2009"

macOS

$ system_profiler SPUSBDataType
    ISDN TA [HFC-S]:
      Product ID: 0x2009
      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
	2009  ISDN TA [HFC-S]

• 0742:2008 ISDN TA [HFC-S]
• 0742:200a ISDN TA [HFC-S]

See all 3 devices from Stollmann →