For Astar call 866-779-3452 ext 4 then ext 1 (crewsked). You must also be in the cass for the jumpseat, but I believe you can ride in the seats in the bus without cass because they have a door. At least thats how it used to be.
I call the 2450 extension and have never had a problem getting through. Just make sure "Flight Control Amy" doesn't answer, if she does, hang up and try again later. ABX guys know what I'm talking about.