... ,supply the types of 19 inch rack mounting ,desktop ,wall-hung ,and insert-card7.three types of power supply mode ... management function of SNMPTechnical parameters Optical fiber interface 1.fiber type : single mode fiber ,muti mode fiber ,optional2.wave length ... G.7034.interface impedance :75 Ωunbalance/ 120Ωbalance5.interface type : BNCEthernet interface 1.interface rate : 100M auto-adapt2.interface ...