RedHat 6.0 is missing the teles_cs.o module that is required
to be used when you use PCMCIA Teles ISDN-card.
This may or may not happen. We use the lastest pcmcia sources with
each release as distributed from David Hinds ftp site. You card shows
up in the contributed drivers list which has the following statement.
The following cards have contributed drivers which are distributed as
separate packages. The drivers are not included in the base PCMCIA
package for maintenance reasons: they are for less common cards and I
cannot test them.
You can obtain the source for your particular card from
and apply them to the pcmcia source tree under /usr/src/linux and the
recompile and install the proper modules.