10/100BaseTx to 100BaseFx in band managed converter



Intelligent 10/100 Ethernet converter available as standalone or chassis mounted device.

  • 10/100Base Ethernet to 100Base-FX fibre slide-in card converter.
  • Controlled and monitored from a centrally located managed rack.
  • Transparent to Layer 2 and Layer 3 protocols including IEEE 802.1q, VLAN tag, Q in Q, STP, IPX, IP.
  • When used stand-alone has no access to management functions except to force Ethernet connection and apply Link Fault Pass-thru via setting of a 4-pole DIP switch.


The FRM220-10/100I is a media converter for 10Base-T or 100Base-TX, data transmission over optical fibre media. All media converters are available with either multi-mode or single-mode optical transceivers and with connectors for SC, ST or FC. In single mode, Bi-directional WDM (Wave Division Multiplexing with SC connector) is also available in 20, 40, 60, or 80Km reach, which will provide the ability to transmit and receive data using only a single optical fibre.

When the FRM220-10/100I card is placed in the FRM220 rack, the In band management, can monitor, configure and control the activity of each port for both local or remote sides. For the UTP side, auto-negotiation is default. You may set data rate to 10Mbps or 100Mbps and duplex mode to full or half duplex. The Fibre Transceiver Converters give you the freedom to extend your 10/100Mbps cabling distance by allowing connectivity up to 120 kilometers. Six LED indicators signal the power status of the converter, UTP port speed, duplex status and Link/Act and FX port Link/Act and FEF (Far End Fault).

Link-Fault-Pass through (LFP) Application Note

When the ‘link fault pass through’function is enabled, link status on TX port will pass through to the FX port of the same device and vice versa. From the link fault pass through explanation in the figure below, if link failure occurrs on TX port (1), the local FX port sends non-idle pattern to notify the remote FX port (2). The remote FX port then forces its TX port to link failed after receiving the non-idle pattern (4). This mechanism will alert the link fault status of local TX port to the remote converter's TX port, and the link status of the remote TX port will become down. Link status LED will also be off for both. Link Fault Pass through is enabled by setting DIP switch 4 (ON).

Link fault passthrough
Link fault passthrough

Lifetime Support

This product comes with free lifetime telephone support.


Item Description
Optical Interface

Connector 1 x 9 (SC, ST, FC)
Data rate 125Mbps
Duplex mode Full duplex
Fibre MM 50/125μm, 62.5/125μm
SM 9/125μm
Distance MM 2km, SM 15/30/50km
WDM 20/40km
Wavelength MM 1310nm, SM 1310, 1550nm
WDM 1310Tx/1550Rx (type A)
1550Tx/1310Rx (type B)

Electrical Interface

Connector RJ45
Data rate 10Mbps, 100Mbps
Duplex mode Half / Full duplex
Cable 10Base-T Cat.3, 4, 5, UTP
100Base-TX Cat.5, 5e or higher


IEEE 802.3, IEEE 802.3u, IEEE 802.3x, TS-1000


LED (Power, FEF, FX-Link, TX-SPD, TX-Duplex, TX-Link)

Power Input


Power Consumption

< 6W


Card: 155 x 20.8 x 88mm (D x W x H)




0 ~ 50°C (Operating), -10 ~ 70°C (Storage)


10 ~ 90% non-condensing




65,000 hrs

Ordering Information

Order Code Description
CT-FRM220-10/100i-ST002 10/100Base-TX to 100Base-FX In-Band Managed Converter ST, 2Km, 1310nm, 11dB
CT-FRM220-10/100i-SC002 10/100Base-TX to 100Base-FX In-Band Managed Converter SC, 2Km, 1310nm, 11dB
CT-FRM220-10/100i-FC002 10/100Base-TX to 100Base-FX In-Band Managed Converter SC, 2Km, 1310nm, 11dB
CT-FRM220-10/100i-ST015 10/100Base-TX to 100Base-FX In-Band Managed Converter ST, 15Km, 1310nm, 12dB
CT-FRM220-10/100i-SC015 10/100Base-TX to 100Base-FX In-Band Managed Converter SC, 15Km, 1310nm, 12dB
CT-FRM220-10/100i-FC015 10/100Base-TX to 100Base-FX In-Band Managed Converter FC, 15Km, 1310nm, 12dB
CT-FRM220-10/100i-ST030 10/100Base-TX to 100Base-FX In-Band Managed Converte ST, 30Km, 1310nm, 20dB
CT-FRM220-10/100i-SC030 10/100Base-TX to 100Base-FX In-Band Managed Converte SC, 30Km, 1310nm, 20dB
CT-FRM220-10/100i-FC030 10/100Base-TX to 100Base-FX In-Band Managed Converte FC, 30Km, 1310nm, 20dB

More Information

Chassis and mounting options for the FRM220 family.

AC and DC power options available.  See individual products for further details.

1 Slot standalone chassis for ISDN, voice or data modules, AC or DC
1 Slot chassis with DB9 console port for Ethernet, voice or serial cards
2 Slot Ethernet, ISDN and serial chassis with console port
2 Slot chassis manageable via NMC card
4 slot Ethernet, ISDN and serial chassis, 1U
8 Slot multi service rack, 1U
20 Slot multi function chassis with Ethernet, serial and ISDN, 2u
20 Slot Ethernet aggregation rack, 2u