ISDN and USB devices in 5.3

[Lefteris Tsintjelis]

Hi,

Is there any support for USB ISDN devices in 5.3? The USB modem I want
to use is correctly idendified but as a ugen0(.1/.2). I searched the docs
but I only saw info for PCI/PCMCIA/ISA ISDN cards, no USB at all.

PS: Please CC

Thank you