I'm sort of over qualified about reserve right now (or so it feels!) At my company reserve is 5 on 2 off 5 on 3 off. Different domiciles have a certain number of reserve lines. My domicile has 7 reserve lines, so you can bid for certain days off. Now, just because you have days bid off doesn't mean they won't extend you or something stupid like that. Basicly, if you get sent out on a 3 day trip on your 4th day of reserve you will be out for your first day off after the 5 on. However it works out, at the end of the month you will have gotten 10 days off. We also have a strange policy where if somebody drops a trip for what ever reason, they can pick it up at any time. So even if you are sent on a 4 day trip, it is possible that you will be kicked off it in day 2 when the line holder picks it up again. On days on you will have one of 3 shifts. They are 5-7, 7-9 or 9-11. (14 hours of waiting for the phone to ring) Also, 3 times a month you can get put on hot reserve. That's in airport from 5-2. Only 10 hours but it is all sitting in the airport. I've actually got hot reserve tomorrow. Grr...
Anyhow, that's what we've got here... pretty similar to the rest of the industry I would bet.