Larger Consciousness System
The Larger Consciousness System is a synonym of AUM. It has been used as a term on its own in various videos with Thomas Campbell as well as an acronym (LCS) in the MBT Forums, although it is rarely used in the books. When compared to Absolute Unbounded Manifold, the Larger Consciousness System is an easier term to understand for someone who has not read the MBT Trilogy.
The LCS encompasses the entirety of consciousness that is media of reality. Whether or not something exists outside of consciousness is theoretically possible but practicably unknowable, as we are consciousness itself.