Our Nortel system has somehow turned off our third line and one of our phones does not let anyone call out on line on. We have no idea how to fix this. We've tried to reconfigure the lines but we don't have the Administrative Pass Code. Our IT guy has no idea what to do and Nortel wants to charge us upwards of $250 per hour (minimum one hour)to even tell us over the phone how to fix this. Is there a generic override code? And does anyone have any advice? Thanks so much!