I HAVE AN 81C WITH 72 COPPER TRUNKS.....YES I SAID 72 COPPER TRUNKS. 18 ARE DID AND THE REST GROUND START DIAL OUTS. I WOULD LIKE TO MOVE TOWARD PRI BUT I STILL HAVE TO PROVIDE MULTIPLE PFT'S THROUGHOUT FACILITY. (HOSPITAL). WHAT ARE MY OPTIONS IF ANY? COST IS A FACTOR.