xdot3ConfigMedia 1.3.6.1.4.1.838.3.3.1.2.1.3

The media type of the interface. The value 'tx(1)' indicates copper, 'fx(2)' indicates 850 nm multi-mode fiber, 'sx(3)' indicates 850 nm multi-mode fiber and lx(4) indicates 1300 nm single-mode or multi-mode fiber.