... or RJ45 120Ohm Card Type SNMP management E1 Fiber Modem, 1 Fiber Port PDH Multiplexer SPD-FE1-S-20-531AMCFramed E1 Fiber ... Modem, Single fiber, 20km, 1550Tx/1310Rx wavelength, 1 fiber port, 120ohm, SNMP management, Card Type.High ... -S-20-531AMC: Framed E1 Fiber Modem, Single fiber, 20km, 1550Tx/1310Rx wavelength, 1 fiber port, 120ohm, SNMP management, Card type. We ...