do you have a PRI? If so, what is your software level (Do you have 2nd dial tone enabled?). What happens when you pick up a "regular" set, and dial 9? Do you get a second dial tone, or silence as well? (oops, I just noticed this is the BCM forum, not Norstar). In that case, assuming you have a PRI, do you have any POTS lines in a pool? If you do, you could simply make the Prime line for that set that line pool. If you have a PRI, there is no getting around it