Here is what we have, not sure if it will help you.
keep in mind i have had to shorten it as we have more then one card over 200 channels.
;Sangoma A104 port 1 [slot:8 bus:2 span: 1]
channel => 1-15,17-31,32-46,48-62
Now the Zaptel one:
#Sangoma A104 port 1 [slot:8 bus:2 span: 1]
#Sangoma A104 port 2 [slot:8 bus:2 span: 2]
Mind you though i am not sure if my Zapata is correct, or if it would suit your needs.
It should be the same for Digium cards as well, we use this same config for all the boxes with Digium cards as well.