Introduced earlier this year, PCSC's next generation of access controllers is revolutionary. The Fault Tolerant System offers the security industry's first high availability access control system with redundant host, controllers, and communication. The peer-to-peer network of master controllers and door interface modules provides for a level of reliability which is required for today’s security environment but has, until now, been unavailable. The FT architecture provides full security during primary communications failure or hardware failure. An automatic self healing process, “Real-time Dynamic Network Architecture” or RDNA. During a “failure”, the system will automatically reconfigure its network and continue to process access decisions, alarm and other transactional information to and from the host system, LiNC-NET.