FRM220-FXO-FXS-SFP - POTS (RJ11) over fiber media converter, telephone line extender, SFP slot for flexible fiber choices

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Product price $475.00
Buy 10 or above $451.25
MSRP: $669.00
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Product description
The FRM220-FXO-FXS-SFP is a POTS (RJ11) port over fiber optic media converter. The PSTN two-wire POTS telephone port can be configured either as an FXO (PBX trunk) or FXS (telephone set/fax machine/dial-up modem) device just by a simple DIP switch setting. Using a pair of converters, a telephone line can be extended over a fiber optic circuit, providing full service and features like Caller ID. The converter can be used in service mode, alowing connection of 2 telephone sets in between. FRM220-FXO-FXS-SFP has an open SFP slot that accepts any 155Mbps rated SFP transceiver. A selection of Fast Ethernet rated SFPs is available here.

When the FRM220-FXO-FXS-SFP POTS over fiber converter is placed in the FRM220 rack with in-band and SNMP management, the converters status, type, version, fiber link status, POTS RJ11 port status and alarms can all be displayed. Configuration is also available to enable or disable the port, reset the port, do far end fault setting, and initiate local or far end loop-back tests.

The uniqueness of FRM220-FXO-FXS series is given by the ability to convert from standalone media converter to card for the managed FRM220 chassis, in matter of minutes. In an always changing and growing networking environment, such a versatile feature allows network operators to switch to higher density and aggregation hubs without the need to purchase new fiber optic converters.

Technical specifications

POTS Line: FXO (Impedance:600ohms, REN:0.4), FXS (Feedback Voltage: 48VDC, Ring: 90Vp-p)
Interfaces: RJ11 port 600Ohms and SFP slot 155M fiber port
Operating wavelength: SFP one slot (wavelength determined by the SFP used)
Operating distance: determined by the reach of the SFP transceiver
Optical connector: LC (SFPs usually only come with LC type connectors)
Front LEDs: Power, Fiber Link, Di/Do, Test mode
Power: External 90-260V AC switching adapter 9VDC@1A with NEMA1-15(2 blades only), US type main plug
Temperature: 0 50°C (Operating); 0 70°C (Storage)
Humidity: 20 80% non condensing (Operating); 0 90% (Storage)
Consumption: less than 5W
Dimensions(WxDxH): 88mm x 155mm x 23mm
Weight: 330g (without AC adapter)
Compliance: CE, FCC Class A
MTBF: 65,000 hours

Additional information on FRM220-FXO-FXS-SFP: PDF datasheet; PDF Installation Manual.

Note: For compatible SFPs (any third party vendors are accepted as long speed is 155Mbps), please visit the 155M SFP transceiver page.

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Warranty Information

2 years
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Additional Information

Interface Type:
POTS line
Interface Type:
Fiber Type:
SFP slot
given by SFP
Tx Distance:
given by SFP
Power Type:
separate AC adapter included
Cable Type:
Cable Type:
Cable Type:
50/125um multi-mode
Cable Type:
62.5/125um multi-mode
Cable Type:
9/125um single-mode
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