preparing for job interview- good/bad questions?

A question about : preparing for job interview- good/bad questions?

will be a 'permanent' office role, on the phone.. initial training tbc, quite a large company..

Here are some things I plan to ask.. have I missed anything?

likely type of calls being handled - in or outgoing, soft care, hard script?
(any targets? solo, or team based?)

helping with / referring complaints? technical issues? cross selling anything?

Progress reviews / further product training?

Things I am not sure on-
can I see where I may be working? listen in to a call?
other benefits (any pension arrangement will be important, as I will need to make some plans..)

holidays? I have a family event, in a couple of months- would that be best left, until they make any offer..?

likely start date? salary?

Best answers:

• Can you make test calls so you get a feel of what the role is? Also shows you took interest?
  "helping with / referring complaints? technical issues? cross selling anything?"
  I didnt really understand what you meant by this, but would be wary of asking a question in a way which might suggest you lack confidence in these areas
• Any scope for further teaining to move up the ranks, how and when are reviews conducted, uniform policy
  I'd leave the family event untill offer has been made.
• the help / refer query was bout how far they would expect (or let) someone take a call, before needing to refer it elsewhere- a manager, or other department..
• Two big no no's, Don't mention salary or holiday booked until offered the job. Puts you in a better position to negotiate.
• Yes never mention salary hours or work or benefits
  I ask how the job has become vacant
  What makes it a good company to work for
  to name just 2
• many thanks. most q's explained up front, anyway! hope to hear some time later this month..