asterisk users - Jul 2004 - Should configured devices show up with "show channels"

At the CLI, should the command "show channels" list the configured
devices
that may be used for calls? Or, is that command simply a way of viewing the
channels on a T1/E1 if you have that type of interface? If the latter,  is
there an equiv. command to list the single FXO interfaces?

If the answer is yes, all configured devices should have something in
channels, how do you map a linejack from /dev/phone0 to channel 1? I can see
in the zapata.conf file where channels may be set, but not in phone.conf.

I'm trying to get * to answer inbound calls. * reports seeing the caller ID
for the incoming call, but never seems to try and actually answer the call.
My "show channels" is also empty, leading me to believe that the phone
module is loaded and generating events, but the component or configuration
that should map from the phone0 device to a channel for * is missing, so
nothing is happening with the events coming from the linejack. Does that
sound plausible?

Thanks,
Greg