I have a 4 port (RJ11) E148190536 ISA card in an old AMANDA pbx box, I want to know if I could get a newer 4 port PCI card (what type/brand/etc.) and build a new machine with Asterisk. Currently we use the old digital Norstar 5 line phones with extensions. We have about 5 incoming lines, It’s imperitive that we keep our 5 lines per phone. If there is something else that would work, new phones and new setup, im open to suggestions. Unfortunately we can’t go to VoIP since no providers cover our exchange to keep our existing phone number. Personally I would love to go to a whole new setup with new phones, just don’t know which direction to take.