Welcome to the airline...
You either bid a “long call” line or a “short call” line. You cannot be forced into a long call line unless you bid it.
Long call lines pay 75 hours/Short call pays 79 hours... plus anything over the guarantee.
Long call is from midnight to midnight. You have 11 hours once they call you. Essentially they are putting you into rest when they call you. Long call lines are generally the first to be used. You can self assign if you’d like, ie if there is a 3-day you’d like to do, you can put it on your line the day ahead of time. You can be converted to short call at any point, the catch is they have to pay you two hours the first time they do it and one hour each time thereafter.
Short call lines have a 2 hour call out to report time, 3 hours to push time.
You are correct that there is no “airport standby.”
On either style line you’ll get one 5-day block off, one 3 day block off, and 2 two day blocks off...
I forget what else you wanted to know, but hopefully that will get you started. Welcome to the airline, keep your eyes open and you’ll learn lots!