Can the card on the BCM 400 that has moh, page, page relay and two other connections be replaced like a pci type of card in a regular pc. The external page was working when I installed it a few days ago, it was wired to a bogen amplifier for the warehouse area and then it quit working, the room the system is in is rather hot btw. The plug is a stereo plug and I used a butt set and put it on monitor and I did not get any output from the plug using feature 62. The set up was wired to the tip and ring of the bogen amp as well. Any help would be appreciated and any part numbers would help as well. Thank You