etsysOidPhyMGBICxBX120xD 1.3.6.1.4.1.5624.2.2.503

Enterasys MGBIC-BX10-D, a 1000BASE-BX120 Downstream Single Fiber SM, Bidirectional, 1590nm Tx / 1490nm Rx, 120 km, Simplex LC SFP. This part must be paired with MGBIC-BX120-U.