Hi all. I'm new to this board but what a cool place to ask.. Can an older system 75 (circa 1980) accept T-1 cards? If so, how many and what are the slot considerations? How about inbound call routing? Can it do DNIS and/or ANI being an older machine? Do the extensions have to be the same as the DIDs?? Thanks for all the help. OH.. if possible, is there a website with good tech info on this dinosaur??

Thanks in advance, Mike.