  We use the canonical description of T-duality as well as the formulation of
T-duality in terms of chiral currents to investigate the geometric and
non-geometric faces of closed string backgrounds originating from principal
torus bundles with constant H-flux. Employing conformal field theory
techniques, the non-commutative and non-associative structures among
generalized coordinates in the so called Q-flux and R-flux backgrounds emerge
by gauging the Abelian symmetries of an enlarged Rocek-Verlinde sigma-model and
projecting the associated chiral currents of the enlarged theory to the T-dual
coset models carrying non-geometric fluxes.
