Nexaira Business Class II 3G/4G High Availability Router Customizable 3G/4G Auto-Failover with Anti-Flap Virtulal Router Redundancy Protocol (VRRP provides no single point of failure) Generic Routing Encapsulation (GRE is often used for VoIP services) Ipsec termination (not just pass through, often used for payment card industry security standards PCI) QoS (Quality of Service), Wireless Distribution System, Software definable ethernet ports and 4G/WiMax Support