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Multiplexor FMUX/SAT


FMUX/SAT Mux Features:
  • Transmission of up to four E1 channels via synchronous link equipment with codirectional interface V.35, RS-530, RS-449
  • Support for G.703 with or without G.704 framing
  • Compliance with ITU G.703, G.823
  • Local and remote loopbacks
  • Integrated BER tester
  • Console RS-232 port
  • Optional SNMP Ethernet 10Base-T control port
  • Remote management
  • Dry contacts alarm interface
  • Rack-mount 1U construction for 19 inch cabinet
  • AC or DC power

FMUX/SAT is a variable frame structure multiplexor for transmitting up to 4 E1 channels over the synchronous link equipment with codirectional interface (e.g., satellite modem with V.35 DCE interface).

All E1 channels have independent sync signals with their own frequencies. Link speed depends on the number of Е1 channels transmitted:

No. of Е1
4 8.448
3 6.336
2 4.224
1 2.112

Internal loopbacks and integral BER tester operation are controllable by the console port located on front panel. BER tester meters bit error rate in link using permanent or pseudo random code in compliance with the ITU-T O.151 Recommendation (test sequence length equals to 215-1=32767 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 link.

FMUX/SAT has LEDs for channels ready state, link equipment operability, loopbacks enable state and test mode indication.

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 -12 dB
Jitter Attenuator In transmit path
Overvoltage Protection TVS
Overcurrent Protection Fuse
Link Interface
Interface Type, Connector Type Multistandard (V.35, RS-530, RS-449; codirectional mode), HDB44 (female)
Synchronization 8.448, 6.336, 4.224 or 2.212 MHz +/- 30 ppm
Modem Control Lines TXD, ETC, RXD, RXC, CD, DSR, CTS, RTS
Alarm Interface
Connector Type DB-9 (male)
Relay Contact Current Up to 600 mA
Relay Contact Voltage Up to 110 VDC; up to 125 VAC
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
Power source
AC power source 176-264 V, 50 Hz
DC power source 36-72 V
Power 12.5 VA Max
Temperature 0° - 50°С
Humidity 0 to 80 %, non-condensing
Dimensions 444 mm x 262 mm x 44 mm
Weight 3400 g


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

PDF  FMUX/SAT with four E1 ports and SNMP (rack mount) - User's Manual in Russian
PDF  FMUX/SAT with four E1 ports and SNMP (rack mount) - User's Manual in English
MIB  MIB-files for SNMP-management
PDF Справочник по интерфейсным кабелям Cronyx.

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