AirTran has alway's treated me awesome. They used to charge for non-company jumpseaters but it was optional for the gate. It was pretty much up to them if they wanted to charge. IIRC it was like $25 or something. I havn't rode them in a while but from what I remember I think the fee all together was taken away, believe it or not. It's a great option when Delta is alway's full, and they treat nonrevs great.

I wouldn't imagine that you could call a number and list for the jumpseat as an employee could. I alway's just showed up at the gate 45-60 mins ahead of departure and filled out the JS form and never had any problems.