Product Description:  E1 Fiber Modem is called single E1 PDH Multiplexer,which can multiplex one E1 and one RS232 to fiber line.It is widely used in transmission of Moble Base Station,PHS Base Station and large consumer FTTH Technology Characteristic:  Realize one E1 transparent transmitting over fiber   Can interoperate with V.35 fiber modem and Ethernet fiber modem  Realize one RS232 transparent transmitting over fiber,bit is 4800bps  Support all kinds of loop function,for testing and opening conveniently  Support network management function,monitoring the work of device and seting the state of device  Supply the unbalance 75ohm and balance 120ohm E1 interface Interface Parameters:  E1 interface :  Accord with TTU-TG.703 , G.823  Code type : HDB3 ,all necessary alarm functions   Bit rate : 2048kbps±50ppm  75Ω interface with BNC standard connector and 120Ω interface with RJ45 connector  Optical interface :  Transmission mode :single-mode   Optical wave length : 1310nm  Interface mode : FC  Module type :double fiber Working Condition:  Power Supply :AC220V±20% , DC-36V~-72V   Power Consumption: Environment Temperature : 0~50oC Other Characters:  Dimension:220*165*35mm  Weight:900g