One last thing, Sorry: If there's an 800 number, either give it its own LDN, named "800 # ," or point it to a single-line beside the FD, so that unsuspecting clerks won't transfer the 800 # to rooms.

And I strongly second using N2 for a cordless. But check company policy on N1 and N2 answer points. Some places say no Auto Attend, ever.