I got another one - now with picture! ;)
It is labeled
DDU-4-
7992
The picture can be seen here:
http://pics.pofo.de/gallery/v/S8000/S8000_boards/P1070269.JPG.html
Wild guessing.... resistornetwork? capacitornetwork (was something like
that around?)?
I'm pretty sure this is a delay line. Is this a XT board?