Time Transfer is the distribution of a shared time reference among different sites. The accuracy must be consistent with the nature of the application requiring time transfer. For example, in critical infrastructures ultra-accurate time transfer over long distancies can minimize the impact of a disaster caused by incoherent time references. For this reason ultra accurate time transfer and synchronization must be guaranteed. The White-Rabbit (WR) technology has been proposed as alternative to current solutions to provide deterministic sub-nanosecond synchronization using gigabit Ethernet standard. For more information about WR please click on White Rabbit Technology.