asterisk users - Jan 2005 - Problems with FXO interface on TDM400P

Hello, I have the TDM400P from Digium with an FXS on port 4 and FXO on
port 3. I am using the Xorcom asterisk debian self install. The FXS
works ok but the FXO comes back with ZT_CHANCONFIG failed on Channel 3:
Invalid Argument (22) - did you forget that FXS are configured as FXO
and FXO are configured as FXS?

Can I just configure the FXO directly? I am using the Xorcom autodetect
Zaptel routine.

Thanks! Joe