They were known to be in use in the Tion Cluster as early as 25,100 BBY which means they were contemporary to the Corellian and Duros hyperspace cannon. The Tionese developed their hyperdrive technology from knowledge gained by Rakata castoffs of the Cluster. This limited hyperdrive made use of this "lighthouse network" consisted by fixed-position beacons[1]. The beacons were maintained and patrolled by the Republic Spacelane Bureau. Reliability of available data was only about 80%. Beacons were moored in open space between systems to avoid the effects of gravitation.