Patton FiberPlex FOI-4972 Fiber Optic Extender- POTS (FXO/FXS), Instrument Side

Patton FiberPlex FOI-4972 Fiber Optic Extender- POTS (FXO/FXS), Instrument Side, V.90
Model: FOI-4972
Availability: IN STOCK to 4 Weeks *
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Patton FiberPlex FOI-4972 Fiber Optic Extender- POTS (FXO/FXS), Instrument Side, V.90

The FOI-4972 provide complete electrical isolation for 2-wire telephone communications. The FOI-4972 supports standard analog phones, STU-III (secure telephone unit) phones, STE (secure telephone equipment) phones, fax machines, and modems and supports Caller ID. Fiber optic cable offers much longer transmission distances than traditional telephone line cord wiring. Multimode optics on the units can extend the distance to 2km, while singlemode optics can further extend the distance to 20km. The units can be used in areas of high electrical noise or in and out of RF shielded enclosures. The fiber optic cable is not susceptible to interference caused by impulse noise, crosstalk, or EMI. Privacy of communications is also enhanced because the fiber optic cable does not radiate any emissions. FiberPlex recommends “R” units for high security applications because the units have added filtering and shielding for RFI suppression. FOI version units can be mounted in several redundant powering chassis; rack and wall mount options including Tempest and NEMA alternatives.

Key Features

  • Converts Standard POTs FXS/FXO to Fiber for Isolation and Extension
  • Useable for standard phones, STI-III and STE Phones, Fax Machines, or Modems
  • Connects to POTs lines
  • Rugged metal enclosures with RFI shielding
  • 9 to 12 VDC Input Voltage
  • 0 to 50°C Operating Temperature 
  • LED Indicators
  • 1 Year Warranty
  • Power Options Sold Seperately 


FOI-4972-RS-ST, Isolator for telephone (POTS), instrument side, V.90 Singlemode ST opticsRFI suppressed, Power Options Sold Separately *
FOI-4972-R-ST, Same as above, Multimode ST optics

FOI-4972-S-ST,  Isolator for telephone (POTS), insturment side, V.90, Singlemode ST optics, Power Options Sold Separately
FOI-4972-ST, Same as above, Multimode ST optics


* Special order item

TypeTelephony over Fiber
Fiber Ports1 Fiber Port
Input Voltage9 to 12 VDC
Connector TypeST for fiber optics
EnclosureMetal with RF suppression
Dimensions4.5 x 1.45 x 2.56" (114 x 37 x 65 mm)
Weight2 lbs (.9 kg)
MountingStandalone, wall-mount, or chassis mount
LED IndicatorsPower, Off Hook
Operating Temperature0 to 50°C
Storage Temperature-40 to 85°C
Warranty1 year
Download NameFile Size
Patton FOI-2971/4972 Data Sheet250.02KB