> 
> So maybe I can convince Lucent to send me some docs on the
> chip (although they do not seem to be very interested).


Look at

	http://www.lucent.com/micro/isdn/isdndoc.html
	http://www.lucent.com/micro/isdn/docs/

There's programming information on the T9703 (a "Wide Area Connection Device")
that matches the sparc DBRI chips close enough to assist a driver design.

-pk