4 Telephone Lines over Fiber

Qty: 6
Price: $ 995.00
Availability: In stock Condition: new
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Description Features Drawings Model Selection Specification Q&A Documents Support

F-4TEL RJ11 to Fiber Optic Telephone Media Converter

The F-4TEL is used for carrying four phone lines over fiber optic cable.  Telephone over Fiber applications offer a secure connection that is impossible to bug.  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 these devices, four independent telephone lines can be extended over a fiber link.  The F-4TEL provides full service for features like caller ID.  The converter can be used in service mode, allowing connection of 2 telephone sets.  The unit offers SNMP allowing remote management and sensing of converter status, type, version, fiber link status, RJ11 port status, and alarms.  The F-4TEL is a simple and reliable solution for data carriers and service providers for Telephone over Fiber links.  


 •  Extend telephone voice transmission from 2km to 120km over fiber
 •  Network management via terminal, web or SNMP
 •  Supports telephone voice transmission
 •  Supports caller ID pass-through

•  The Tx Transmitter)  connects to FXS  (telephone set/fax machine/dial-up modem)

• The  RX  (receiver)  connects to FXO - ( (PBX trunk)

Model Selection
Model Number Description
  • F-4TEL-TX/RX

4 CH Telephone FXO/FXS Singlemode Fiber Transmitter and Reciever for 20km

•  The Tx Transmitter)  connects to FXS  (telephone set/fax machine/dial-up modem)

• The  RX  (receiver)  connects to FXO - ( (PBX trunk)

  • F-4TEL-Tx/RX-MM
4 CH Telephone FXO/FXS Multimode Fiber Transmitter and Receiver kit for 2km (please call 800-521-8467 ext 1)
  • F-4TEL-Tx/RX-40
4 CH Telephone FXO/FXS Singlemode Fiber Transmitter for 40km (please call 800-521-8467 ext 1)
  • F-4TEL-Tx/Rx-80
4 CH Telephone FXO/FXS Singlemode Fiber Transmitter and Receiver kit for 80km (please call 800-521-8467 ext 1)
  • F-4TEL-Tx/Rx120
4 CH Telephone FXO/FXS Singlemode Fiber Transmitter and receiver kit for 120km  (please call 800-521-8467 ext 1)
*All Specifiactions Subject to Change Without Notice
Optical Interface:  
  • Connector
  • Cable Length
MM 2km, SM 15/30/50/80/120km, WDM 20/40/60/80km
  • Wavelength
MM 1310nm, SM 1310, 1550nm, WDM 1310Tx/1550Rx, 1550Tx/1310Rx
Electrical Interface  
  • Connector
  • FXO Mode
600 ohms, Coding   : 16 bits liner, Loop Current : 10~100mA
Ring Frequency : Acceptable 20 ~50Hz, Insertion Loss: 0.0 ± 1.0dB at 1000H
  • FSX Mode
Impedance : 600 ohms, Coding : 16 bits liner,
Dial: DTMF and Dial Pulse, Battery Source:  48VDC ± 4
  • Ringing Waveform
Sine Wave
  • Ringing Frequency
20/25/30/50 Hz selectable
  • Ring Cadence
FXS to FXS : On / 1 sec, Off / 2 sec
  • FXO to FXS
Reproduces the cadence detected by FXO Insertion Loss  0.0 ± 1.0dB at 1000Hz
REN: 4.0B(Ring Equivalence Number
  • LED Indicators
Power, FX Link, Phone Act, Test
  • Power Requirments
  • Power Consumption
5 W
  • Dimensions
480mm x 225mm x 44mm  
  • Temperature

0~50°C (Operating)
0~70°C (Storage)
  • Certifications
  • MTBF
125,000 h (25°C)
Question and Answers
Yes, but in it works only with analog lines, not a digital phone system OK, it will work We need only one fiber We use WDM multiplexing 1310nm one way and 1550nm return, so we multiplex both directions on 1 fiber, the standard unit supports 20Km of single-mode fiber, what connectors do you have Yes, we have 2, 4, 16 and 32 phone ports available

Unfortunately, that is not possible because of the multiplexing
the technology they utilize.
Because those units require bidirectional communication, they are sold
in sets; since they are sold in sets you can not mix and match them.
Since they are bidirectional units you can't use them with a
correlating splitter either.
So essentially you need to put a transmitter and receiver in every
the location that you require them in.
If you have 8 locations, you could use 8 F-1TEL-TX/RX kits or 8
F-2TEL-TX/TX kits

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