the I series can be a a bit daunting if you aren't familiar with them or Nitsuko/tie programing in general
the best thing you can do for them is suggest they get a Tech in who is familiar with the I series

as to documentation you can click on the Manuals link at the top of the page here to find a manual

the 92011 is a 4 port trunk card so they will need to add a card for the additional two lines


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Serving SW and West central Fl since 1984