... optical transceiver ,which is based on super large scale integrated circuit ,a point to point ,link circuit ,loop ... mounting ,desktop ,wall-hung ,and insert-card7.three types of power supply mode : 220VAC,-48VDC,+24VDC8.transmission distance : 2 ... ~120Km9.networking management function of SNMPTechnical parameters Optical fiber interface 1.fiber type : single ...