Application examples:            

Product features:    (1)providing 181/G.703 interface(120 BG telephone channel)    (2)local device monitor remote device(2 row LEDs,upper indicate local status,lower indicate remote status)    (3)Providing  function of 4 E1 remote loop, fiber local loop, and 1 interface of phone.    (4)Power supply option: AC220V, DC-48V,DC+24V.    (5)transmission distance:2-120Km    (6)two fiber  bidirection and single fiber bidirection(optional). (7)match telecom operation requirement,MTBF above 70,000 hours.    (8)high reliability, providing  installation type of 19 inch rack, desktop, hanging, and card. the rack support both DV and AC power supply.    (9)providing SNMP function.    (10)Two types:Standalone, desktop, 19inch;Card,usually be inserted in our 19 inch rack . Optical interface parameter:    Optical wavelength：850/1310nm for multi-mode fiber, 1310/1550nm for single-mode fiber.    Optical interface ：SC/FC    Transceiver module：>-6dBm    Optical receiver sensitivity：<-36（BER<10 ）    Receive range：>-30dB    Transmission distance：multi-mode 2 Km, single-mode 40 Km, single-mode 80 Km,single-mode 120 Km    Jitter tolerance：according with G.742 and G.823. E1 interface parameter:    Code：HDB3    Interface Rate：2.048Mbp/s±50ppm    Interface standard：ITU-T G .703    interface Impedance：75Ω(unbalance) or 120Ω(balance).    interface character：support rack (19 inch, 6u high) up to 16 directions.