Following the previous authors works (joint with I.A.Dynnikov) we develop a
theory of the discrete analogs of the differential-geometrical (DG) connections
in the triangulated manifolds. We study a nonstandard discretization based on
the interpretation of DG Connection as linear first order (''triangle'')
difference equation acting on the scalar functions of vertices in any
simplicial manifold. This theory appeared as a by-product of the new type of
discretization of the special Completely Integrable Systems, such as the famous
2D Toda Lattice and corresponding 2D stationary Schrodinger operators. A
nonstandard discretization of the 2D Complex Analysis based on these ideas was
developed in our recent work closely connected with this one. A complete
classification theory is constructed here for the Discrete DG Connections based
on the mixture of the abelian and nonabelian features.