Fiber to the x (FTTx) is a generic term for any broadband network architecture that uses optical fiber to replace all or part of the usual metal local loop used for last mile telecommunications. The generic term originated as a generalization of several configurations of fiber deployment (FTTN, FTTC, FTTB, FTTH...), all starting by FTT but differentiated by the last letter, which is substituted by an x in the generalization. Fiber-to-the-building or Fiber-to-the-basement - fiber reaches the boundary of the building, such as the basement in an multidwelling unit, with the final connection to the individual living space being made via alterative means.