FMUX-01A - Fiberoptic E1, Data & Ethernet Multiplexer


The MDD FMUX is a single unit (1U), 19" rack mountable, E1/T1, Datacom & Ethernet Bridge multiplexer that transmits over a single fiber optic link. The MDD FMUX features a modular design that provides a wide variety of customized user configurations. The optical fiber interface module is available in a number of standard fiber connections and with standard or optional redundant optical connections. The MDD FMUX chassis is available in five different power configurations : single AC, single DC, dual AC, dual DC or AC+DC. The AC supplies operate from 90~260VAC while DC supplies operate from 20~60VDC. From the rear of the chassis, one to four quad E1 or T1 line cards, datacom (V.35, X.21, RS-530), or Ethernet Bridge cards are supported. All line cards provide completely transparent transmission of E1, T1, datacom, or Ethernet regardless of frame mode or timeslot assignment. Optional hardware cards are also available for external clock and SNMP. The standard MDD FMUX configuration may be viewed or set via the front panel LCD/menu keys, serial VT-100 terminal connection or Telnet/SNMP with SNMP option.


  • Channel Capacity : 4,8,12 or 16 channels
  • Auto Laser Shutdown (ALS) to prevent hazardous laser radiation to personnel
  • Real Time Clock (RTC) run by backup battery to avoid time setting loss caused by power disruption.
  • Configuration data can be stored into flash buffer to avoid any loss caused by power disruption.
  • System performance : Less than 1 error in 1010 bits
  • Modularized interface : G.703 E1 and T1
  • Datacom (V.35/RS-449,530/X.21)
  • Ethernet Bridge 10/100Base-T/TX
  • Alarm relay contacts provided which can offer major and minor alarms with audible and visible alarm output.
  • TFTP remote software upgradable (for SNMP option)
  • Local and Remote Loop-Back Functions.
  • Redundant Fiber 1+1 Protection. (Optional)
  • Management : Local side can be managed via LCD/Keypad and
  • Terminal and optional SNMP; Remote side can be managed via Inband
  • LCD/Keypad, Terminal, Telnet & optional SNMP


E1/T1 Interface

  • Bit rate : (E1) 2.048Mbps+/-50ppm / (T1) 1.544Mbps+/-50ppm
  • Line Code : (E1) HDB3/AMI/ (T1) B8ZS/AMI
  • Line Impedance : (E1) 120 Ohms/ 75 Ohms+/-5% / (T1) 100 Ohms+/-5%
  • Jitter Performance : (E1) complies with G.823 / (T1) complies with G.824
  • Pulse Mask : Complies with ITU-T G.703
  • Connector : RJ-45 or BNC (75 Ohms E1)

Datacom Interface

  • Card Type : V.35 interface / RS-530 interface(Include X.21 and RS-449) / RS-232 interface
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