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Home Products Fibre Optic Converters G.703 FRM220-ET100 Ethernet over E1 Fibre Modem

FRM220-ET100 Ethernet over E1 Fibre Modem

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FRM220-ET100  Ethernet over E1 Fibre Modem

FRM220-ET100  Ethernet over E1 Fibre Modem

The FRM220-ET100 is a single port Fibre WAN (TDM) card with built-in HDLC Bridge for the FRM220 Series Platform Media Converter Racks. The converter supports Nx64 data rates from 64Kbps up to 2.048Mbps when linked by fibre to FRM220-Data or FRM220-E1/T1 cards. The clock source may be selected internally or recovered from received fibre signal. The Ethernet port utilizes a single RJ-45 connector. When the FRM220-ET100 card is placed in the FRM220 rack with SNMP management, the management can view the converter card's status, type, version, Ethernet link status and alarms. The card can be configured to enable or disable the port, reset the card, set clocking, data rate and provide digital diagnostic loopbacks. A unique feature of the FRM220-ET100 is the use of a common card design which may either be inserted in the FRM220-CH01 single slot chassis as a stand-alone modem or as a card when placed in the FRM220-CH20 In-band managed rack.

Ethernet over E1 Fibre Modem schematic


  • Standalone type, 1 port Ethernet to HDLC (fibre) converter.
  • P2P Fibre link compatible with FRM220-E1/T1 and FRM220-Data
  • Interface connectors, RJ-45 for 10/100 Base-Tx.
  • Fixed optical for SC or ST, 2km(MM) to 120km(SM)
  • TDM settings.
    • Clock source (internal or external).
    • Nx64k data rate (64kbps~2048kbps).
  • Ethernet encapsulated with ISO 13239 standard HDLC.
  • Loop Back with integral BERT
  • LED indicators
  • Firmware upgradeable, when placed in managed FRM220 chassis


TDM (fibre) Interface:

  • Connector: 1x9 (SC, ST, FC)
  • Data rate: 64~2048kb/s(nx64)
  • Distance: MM 2km, SM 15/30/50/80/120km, WDM 20/40/60/80km
  • Wavelength: MM 1310nm, SM 1310, 1550nm, WDM 1310Tx/1550Rx(type A), 1550Tx/1310Rx(type B)


  • E1 Loops: Remote Loop back
  • BERT: Integral 511 pattern generator

Ethernet Interface:

  • Standard: IEEE 802.3u, IEEE 802.3
  • Data rate: 10Mbps, 100Mbps
  • Duplex mode: Half / Full duplex
  • Connector: RJ-45

Indications: PWR, TD/RD Act., Test, Sys, Alarm, Error
Power Input: Card : 12 VDC; Standalone : AC, DC option
Power Consumption: < 5W
Dimensions: 155 x 88 x 23mm (D x W x H)
Weight: 0.28kg
Temperature: 0 ~ 60°C (Operating), -10 ~ 70°C (Storage)
Humidity: 10 ~ 90% RH (non-condensing)
Certifications: CE, FCC, RoHS
MTBF: 75,000 hrs