I notice that in some of the docs there is reference to 2 types of fxo's (one having caller-id functionality and the other not) however, they are not orderable as seperate parts. The only orderable part is vic-2fx0= and that's it.
Check out http://www.cisco.com/warp/public/cc/pd/rt/2600/prodlit/2600_ds.htm
down a bit it mentions vic-2fx0-m1 and vic-2fx0.
How can I tell which one I have?