The FM-1UCH is a 1U, 19″ rack mountable, PDH fiber optic multiplexer that transmits up to 16 channels plus a 10/100/1000Base-T Gigabit Ethernet channel over a single fiber optic link. The FM-1UCH chassis supports redundant power and hot swappable design. The AC supplies operate from 100~240VAC while DC supplies operate from 18~60VDC. From the rear of the chassis, one to four hot swappable quad E1 or T1 line cards, serial data communications (V.35, X.21, RS-530) or FXO/FXS voice cards are supported. The standard FM-1UCH configuration may be viewed or set via the front panel LCD/menu keys, serial VT-100 terminal connection, Telnet, web HTTP or SNMP.



  • 1U, 19 (23)” 4-slot chassis
  • 16 E1 (2.048Mb/s) Multiplexer with 100/1000Mbps Ethernet and RS-232 data (async) Interface
  • RS-232 port for system console
  • One alarm output port, one Order Wire port4x 10/100/1000Base-T Ethernet portsSpecifications
  • SNMP management
  • LCD plus menu keys for local configuration
  • Port based VLAN, tag based VLAN & bandwidth control
  • Telnet and web based remote configuration
  • 2 plug-in SFP slot for optical SFP module




Optical Interface Connector SFP – LC
Data rate 1.25G
Bit Error Rate Less than 10-11
Fiber MM 62.2/125μm, 50/125μm
SM 9/125μm
Distance MM 2km. SM 15/30/50/80/120km
WDM 20/40/60/80km
Wavelength 1310, 1550nm
Electrical Interface Console, SNMP RJ45
Ethernet 4x RJ45
Alarm RJ45


Standards E1:ITU-T, T1:ITU-T, AT&T, ANSI, Ethernet: IEEE802.3x
Indications PWR, Alarm, Phone, ACO, Port, Channels
Power Input AC module IN : AC 90 ~ 264V, Out : DC 12V

DC module IN : DC 18 ~ 72V, Out : DC 12V

Power Consumption < 25W
Dimensions 250 x 438 x 43mm (D x W x H)
Weight 3.58 kg
Temperature 0 ~ 50°C (Operating), 0 ~ 70°C (Storage)
Humidity 10 ~ 90% non-condensing
Certification CE, FCC
MTBF 50,000 hrs






E1/T1 RJ-45 I/F


Standards ITU-T G.703, G.704, AT&T TR-62411,ANSI T1.403 ITU-T G.703, G.704, G.706, G.732
Ports 4 ports 4 ports
Framing Unframed ( clear channel ) Unframed ( clear channel )
Data rate T1: 1.544 Mbps ±50 ppm, E1: 2.048 Mbps ±50 ppm E1 2.048 Mbps ± 50 ppm
Line code T1: B8ZS / AMI, E1: HDB3 / AMI E1 HDB3/AMI
Receive Level Short haul – 15dB Short haul – 15dB
Line impedance T1: 100 ohms ±5%, E1: 120 ohms ±5%, 75ohms ±5% E1 75 ohms ± 5%
Connector RJ-45 BNC 75 ohms









      Datacom I/F


Standards ITU-T, E1A
CardType V.35/ RS-530 (Include X.21 and RS-449)/ RS-232 I/F
Bitrate n x 64K, n = 1 to 32
V.35 & RS-530 up to 2Mbps
RS-232 up to 115.2Kbps (ASYNC)
Linecode NRZ
ClockMode Transparent, Recovery, External (From data port ETC)
Internal (From oscillator)
ControlSignal CTS always On or follows RTS
DSR constantly ON, except during test
loops (RS-530 DSR always connect to DTR)
DCD constantly ON,except during fiber signal loss
TestLoops Local loop back, Remote loop back, V.54
Connector Type Uses HD-68 pin D type Female with adapter cables


       FXO/FXS I/F


Standards G.711 A-law (separate modules for FXO, FXS)
Distance 2km
Bandwidth 64K voice channel
Connector RJ45 x 4 (4 voice channel /per unit)




FM-1UCH Chassis 1U 19” 4-Slot Rack Mount Chassis
FM-1UCH-AC Power Chassis Power Module 110~240VAC
FM-1UCH–DC Power Chassis Power Module 36~72VDC
FM-1UCH 4E1/BNC Card 4ch G.703 E1 BNC interface card
FM-1UCH-4E1/T1-RJ45 Card 4ch E1/T1 RJ45 interface card
FM-1UCH-4E1/T1-Wire Card 4ch E1/T1 Wire Wrap interface card
FM-1UCH-V35 Card V35 interface card with one HD68M to 4 x MB34 cable
FM-1UCH-RS530 Card RS-530 interface card with one HD68M to 4 x DB25F cable
FM-1UCH-449 Card RS-449 interface card with one HD68M to 4 x DB37F cable
FM-1UCH-X21 Card X.21 interface card with one HD68M to 4 x DB15F cable
FM-1UCH-232/ASYNC Card RS-232 Async card with one HD68M to 4 x DB9F cable
FM-1UCH-FXO Card 4 x FXO interface card
FM-1UCH-FXS Card 4 x FXS interface card
FM-1UCH-Phone-2W Card 2 Wires order Wire (connect to analogue Telephone set)
FM-1UCH-Phone-4W Card 4 Wires order Wire (connect to Ear-Mic set)
FM-1UCH-EXT/CLK Card External clock interface card