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Fiber Optic Multiplexor FMUX-16

Discontinued, recommended replacement is: FMUX/S

Optical Transceiver Parameters

Fiber Optic Multiplexor FMUX-16 Features:
  • Transmittion of sixteen E1 channels via fiber optic link
  • Model with additional Ethernet 10/100Base-T and V.35/RS-530/RS-449/RS-232 channels
  • Single mode or multimode fiber
  • Distance up to 150 km
  • Compliance with ITU-T G.703, G.742, G.823, G.955 Recommendations
  • Local and remote loopbacks
  • Integrated BER tester
  • Console RS-232 port
  • Optional SNMP Ethernet control port
  • Remote management
  • Dry contacts alarm interface
  • Stand-alone or rack-mount 1U
  • AC or DC power
  • Certificate N OS-2-SP-1458 of Russian Ministry of Communications

FMUX 16E1 is a multiplexor for transmitting 16 E1 channels over the fiber optic link. All channels have independent sync signals with their own frequencies.

The device has optional channels (Ethernet 10/100Base-T and V.35/RS-530/RS-232/X.21). Optional channels are transferred instead of 1 to 4 E1 channels (console configurable).

Model with Ethernet 10/100Base-T port supports VLAN protocol.

FMUX has LEDs for channels ready state, optic transceiver operability, loopbacks enable state and test mode indication. Internal loopbacks and integral BER tester operation are controllable by the console port located on front panel. BER tester meters bit error rate in optic link using permanent or pseudo random code in compliance with the ITU-T O.151 Recommendation (test sequence length equals to 223-1=8388607 bits).

Device state can be monitored by SNMP using separate Ethernet 10Base-T port.

Remote device management is available by remote login feature. Service data exchange is supported by additional service channel using same optic link.

Alarm indication relay with "dry contacts" interface in compliance with the ITU-T G.742 Recommendation, paragraph 10, is supplied.

The firmware of the device can be updated by user.

Currently available models are listed in Prices. Please, contact technical support if you are unsure which model to choose.


Interface E1 (2048 kbit/sec)
Connector Type RJ-48 (female 8 pins)
Line Code HDB3
Framing Transparent; both framed and unframed modes supported
Error Detection Bipolar Violation
Line Impedance 120 Ohm (Twisted Pair)
Receive Signal Attenuation Range From 0 to -36 dB
Input Signal Measurement Precision 2 dB
Jitter Attenuator In transmit path
Overvoltage Protection TVS
Overcurrent Protection Fuse
Interface Ethernet
Interface 10/100Base-T
Connector Type RJ-45 (female)
Data rate 8192, 4096, 2048, 1024, 512, 256, 128 or 64 kbit/sec
Mode 100 Mbps Full-duplex,
100 Mbps Half-duplex,
10 Mbps Full-duplex,
10 Mbps Half-duplex,
or Autonegotiation
Address table size 15000 MAC addresses
Maximum packet size 4224 bytes, including MAC header
Protocols Transparent or Cisco-HDLC bridging IEEE protocol, automatically selected
Quality of Service 8 priority levels
Alarm Interface
Connector Type 9 pin DB9 female
Relay Contact Current Up to 250 mA
Relay Contact Voltage Up to 100 VDC
Control interface
Connector Type RS-232 DCE, DB-9 (female)
Protocol Asynchronous, 9600 bit/sec, 8 bit/symbol, 1 stop bit, no parity
Modem Control Signals DTR, DSR, CTS, RTS, CD
Diagnoctic modes
Loopbacks Local, Remote
BER Tester Built-in
Control By switches on front panel or via control port RS-232
Box Rack mount 19" 1U
Dimensions 444 mm x 262 mm x 44 mm
Weight 3400 g
Power source
AC power source 176-264 V, 50 Hz
DC power source 36-72 V
Power 12.5 VA Max
Temperature 0° - 50°ะก
Humidity 0 to 80 %, non-condensing

Optical Transceiver Parameters

Specification TM13 TS13 TS15 TW13 TW15 DW13 DW15
Fiber Type Multimode
Single Mode
Single Mode
Single Mode
Single Mode
Single Mode
Single Mode
No. of Fibers Two Two Two One One Two Two
Minimum Fiber Optic Cable Power Budget 13 dB 29 dB 29 dB 26 dB 26 dB 17 dB 17 dB
Fiber Optic Cable Minimum Length Limitation No No No No No No No
Maximum Fiber Optic Cable Length (depends on cable parameters) 2 - 5 km 40 - 80 km 80 - 150 km 40 - 60 km 40 - 60 km 25 - 40 km 25 - 40 km
Note Uses WDM, requires TW15 optical module at opposite end Uses WDM, requires TW13 optical module at opposite end Uses WDM, requires DW15 optical module at opposite end Uses WDM, requires DW13 optical module at opposite end
Wavelength 1310 nm 1310 nm 1550 nm 1310 nm 1550 nm 1310 nm 1550 nm
Optical Output Power -19 dBm -5 dBm -5 dBm -8 dBm -8 dBm -14 dBm -14 dBm
Spectral width 200 nm 3 nm 1 nm 3 nm 1 nm 4 nm 2 nm
Maximum Input Optical Power -14 dBm -3 dBm -3 dBm -3 dBm -3 dBm 0 dBm 0 dBm
Receiver Sensitivity -32 dBm -34 dBm -34 dBm -34 dBm -34 dBm -31 dBm -31 dBm


Some of the documents are in Adobe® Acrobat® Reader® format

PDF  FMUX-16 with 16 E1 ports and SNMP - User's Manual in Russian
PDF  FMUX-16 with 16 E1 ports and SNMP - User's Manual in English
PDF  FMUX-16 with 16 E1 ports, Ethernet 10/100Base-T port, universal port and SNMP - User's Manual in Russian
MIB  MIB-files for SNMP-management

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