I would suggest the following - remove the drivers - load them manually (zaptel, wcte11xp, wctdm) Run: Zttools -> should show unconfigured cards. Take: /etc/zaptel.conf span=1,1,0,ccs,hdb3,crc4 bchan=1-15,17-31 dchan=16 fxsks=32-35 loadzone = us defaultzone=us run: ztcfg -vv See what it is saying Hope this helps