Cyber-Control was the base of operations of Cybermen activity.
During their invasion of Earth in the 1980s, Cyber-Control was on the flagship of the Cyber-Fleet. (AUDIO: Hour of the Cybermen)
On Telos in the 25th century, (TV: Tomb of the Cybermen) Cyber-Control was overseen by the Cyber-Controller and contained facilities for Cyber-conversion. The base was later destroyed when Flast used the Sixth Doctor's sonic lance to explode a quantity of vastial. (TV: Attack of the Cybermen)
When the Twelfth Doctor and Lumpy landed on Telos to find a segment of the Orb of Fates, Cyber-Control was visible. (GAME: The Doctor and the Dalek)