Im still digging around... But i think the only answer would be a service card of some type. I have experiance with smartcard security, but I just havent found out what model atmel chip they are using. What I am a little PO'ed about is AMS's attitude towrd me. They have been of no help what soever. But yet they are the ones who last serviced the unit in 10/2011. I am pretty sure the unit was decommisioned right after that and sold to me a few monthes later. I would think they could provide some info on what was done to it, and what its service history is. Without a service card it looks like im only going to get 30-40min per fiber card. These are not cheap since they are one time use and include the fiber. I wish there was more info on the security system used. I dont know if the technical manual has anything on it...