asterisk users - Nov 2005 - Debian Sarge + Asterisk 1.2 + chan_mISDN not starting

Hi,
I'm setting up an Asterisk 1.2 PBX based on a Debian Sarge distro with a 
quadBRI beroNet card.
I've followed beroNet instructions so I compiled Zaptel, Libpri and 
Asterisk and then launched install-mISDN script downloaded from beronet 
site (install-mISDN.tar.gz).
I try to start Asterisk but it gives me the following error:

*[chan_misdn.so] => (Channel driver for mISDN Support (Bri/Pri))
Nov 30 17:02:17 ERROR[4246]: chan_misdn.c:3455 load_module: Unable to initialize
mISDN
Nov 30 17:02:17 WARNING[4246]: loader.c:414 __load_resource: chan_misdn.so:
load_module failed, returning -1
Nov 30 17:02:17 WARNING[4246]: chan_misdn.c:3623 chan_misdn_log: cb_log called
with out-of-range port number! (0)
Nov 30 17:02:17 WARNING[4246]: loader.c:554 load_modules: Loading module
chan_misdn.so failed!*

Supposing mISDN is already present in Asterisk 1.2, why isn't Asterisk 
starting??

TIA

Giorgio Incantalupo