More questions: when you're at home on-call, are you paid for those hours?
At my facility, we're paid call time, which is a lower amount on the hour than 'work' time. Each facility's different, so you might want to ask about that.
How many times do you do it a month?
Night call once a week, weekend call every 10th weekend. Again, this varies facility to facility.
You wear a pager, or do they call your cell phone?
Most places provide pagers, our happens to provide pagers and cell phones. I prefer a cell phone, that way i can talk to someone immediately.
You can probably volunteer to be on-call more often if you want overtime, right?
You typically can, however, overtime's not everything. Rest is important for health and safety reasons.
The manager was explaining about 24 hour on-call, too...are you familiar with that?
Wher ei work, that means you're on call for 24 hrs straight.