controllers and configuration software
.
S57901 English Manual
Version 2.94
controller manual (german)
.
S57901 manual
from nov. 2001
ISDN basic rate devices (german).
SLink Handbuch
PDF, from june 1998
SLink25 manual (V.26bis, Ethernet)
PDF, from february 2000
ISDN primary rate devices (german).
PLink manual
PDF, from may 1995