Imperial Listening Post The Imperial Listening Post was a secret installation located on an island off the coast of Avilatan , a far larger island on the planet Ord Mantell . Built and operated by the Sith Empire , the outpost was used during the Cold War with the Galactic Republic , and the intelligence gathered by the monitoring station was used to aid the Mantellian Separatist Movement in the Separatist War against the Republic - backed government of Ord Mantell . In 3643 BBY , a young Jedi Knight and the astromech droid T7 - O1 attacked the base in order to access the outpost ' s communications records and trace the whereabouts of the Sith Lord Darth Angral . The two were successful in their mission and eliminated dozens of Imperial troops stationed there . Description . The Imperial Listening Post was a largely subterranean facility constructed on an island located off the northern coast of Avilatan , a far larger island on the planet Ord Mantell . The outpost ' s entrance was an above - ground bunker that contained a large elevator to the lower levels , which consisted of one central chamber , two smaller rooms located off that chamber , and a hallway linking the central chamber to a lift . The facility contained advanced surveillance equipment and communications relays , which the outpost ' s staff used to eavesdrop on the Republic Military on Avilatan . The post was located only a short distance from the Republic ' s primary military base at Fort Garnik . History . The Sith Empire established the listening post sometime during the Separatist War , a civil conflict on Ord Mantell between the Galactic Republic - backed planetary government and the Mantellian Separatist Movement . As part of its efforts to destabilize the Republic in the ongoing Cold War , the Empire backed the separatists , giving them information that the listening post gathered from its observations . However , in 3643 BBY , the Sith Lord Darth Angral arrived at the outpost with a number of retainers and apprentices , and he used the facility to contact his son , Tarnis , on the Republic capital of Coruscant . Tarnis was a Sith Lord who was soon killed trying to use the Planet Prison superweapon against Coruscant . Before his death , Tarnis sent his father files on the Republic superweapon initiative , giving Angral knowledge of several Republic weapon programs , and Angral promptly declared war against the Republic for the death of his son . The Republic Strategic Information Service , the Republic ' s intelligence agency , was able to trace the transmission to Ord Mantell and discover the outpost , prompting General Var Suthra of the Republic Military to dispatch a young Jedi Knight to Ord Mantell to locate the outpost and potentially put an end to Angral ' s plans before they could begin . Suthra also contacted on Ord Mantell SIS Agent Ottau , who dispatched a probe droid to scout the facility — though the droid was quickly destroyed by the Imperials stationed there . Angral and his entourage were departing the facility around the time that the Jedi Knight arrived at Ord Mantell with the astromech droid T7 - O1 , who accompanied the Jedi down to Ord Mantell and met with Ottau . With Ottau ' s directions , the duo located the island base and attacked it , killing dozens of Imperial personnel , including the facility commander . They had dispatched most of the facility ' s staff when they reached the listening post ' s primary hyperspace transceiver , which was guarded by a Lieutenant Marcovic . Marcovic fell in battle and was unable to prevent T7 - O1 from downloading the facility ' s files and a record of the files that Tarnis sent to Angral . Their mission complete , the Knight and T7 - O1 departed the Imperial base and met with Ottau , who planned to send an SIS team to secure the facility . Behind the scenes . The Imperial Listening Post is a location created for " " , a video game released by BioWare in 2011 . It serves as a class - restricted phase for the Jedi Knight class on the planet Ord Mantell , accessible only during the mission " New Intelligence . " The location also received an entry in the in - game Codex and was pictured — though not labeled — in the " " .