  Based on the Ewald-Oseen extinction theorem, the omnidirectional total
transmission of waves incident from vacuum into an anisotropic
dielectric-magnetic metamaterials is investigated. It is shown that the
omnidirectional total transmission need not limit at the interface associated
with the conventional nonmagnetic anisotropic medium. The recent advent of a
new class of anisotropic dielectric-magnetic matermaterial make the
omnidirectional total transmission become available. It is found that the
inherent physics underlying the omnidirectional total transmission are
collective contributions of the electric and magnetic responses.
