FRM220-FXO-FXS-SC20B POTS RJ11 over fiber converter, telephone line extender, single strand BiDi B type 20Km

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MSRP: $729.00
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Product description
The FRM220-FXO-FXS-SC20B 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-SC20B operates on single strand fiber up to 20Km distance, using a BiDirectional optical transceiver with Tx:1550nm and Rx:1310nm. The fiber media converter is equipped with single SC type optical connector and must be always paired with an A type single strand converter (the FRM220-FXO-FXS-SC20A).

When the FRM220-FXO-FXS-SC20B 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-SC20B 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. This simple, but so reliable idea, make the FRM220-FXO-FXS-SC20B media converter the perfect choice for media converters by data carriers and service providers.

Technical specifications

POTS Line: FXO (Impedance:600ohms, REN:0.4), FXS (Feedback Voltage: 48VDC, Ring: 90Vp-p)
Interfaces: RJ11 port 600Ohms and dual SC 155M fiber port
Operating wavelength: Tx:1550nm/Rx:1310nm single strand BiDi B type
Operating distance: 20Km on 9/125um fiber
Optical connector: SC single type
Front LEDs: Power, Fiber Link, Di/Do, Test mode
Power: External 90-260V AC switching adapter 12VDC@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

Fiber power budget according to available models

Model Distance Lambda Min. Output (dBm) Sensitivity (dBm) Power Budget (dB)
FRM220-FXO-FXS-SC20A 20Km Tx:1310nm Rx:1550nm -15 -32 17
FRM220-FXO-FXS-SC20B 20Km Tx:1550nm Rx:1310nm -18 -32 14
FRM220-FXO-FXS-SC40A 40Km Tx:1310nm Rx:1550nm -7 -32 25
FRM220-FXO-FXS-SC40B 40Km Tx:1550nm Rx:1310nm -8 -32 24
FRM220-FXO-FXS-SC60A 60Km Tx:1310nm Rx:1550nm -5 -34 29
FRM220-FXO-FXS-SC60B 60Km Tx:1550nm Rx:1310nm -5 -34 29
FRM220-FXO-FXS-SC80A 80Km Tx:1310nm Rx:1550nm -2 -34 32
FRM220-FXO-FXS-SC80B 80Km Tx:1550nm Rx:1310nm -2 -34 32

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

Note:Additional single strand Bi-Directional versions of FRM220-FXO-FXS POTS over fiber converter for distances up to 80Km are available on request, some of them with very short time delivery choices. For such converters, please contact our sales department by e-mail or call us.

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Warranty Information

2 years
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Additional Information

Interface Type:
POTS line
Fiber Type:
single strand single-mode
Tx Distance:
Power Type:
separate AC adapter included
Cable Type:
Cable Type:
9/125um single-mode
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