Phone number for Indy ramp is 317-481-7914, however, as a offline jumpseater the answer may be a polite "we can't". At least try and see what they say. If not, I think a cab might be the next option.
There is a jumpseat area to hang out, I believe there is a computer in the room. There are also coke/snack machines nearby, just ask anyone at the desk.
I hope this helps.
OBTW, I commute fron KSTL myself! See ya soon!
Ricky