8 Channel POTS 2 Wire FXO/FXS to Fiber Multiplexer Installation Kit Standalone (Include FXO and FXS multiplexer, power supplies, simplex MM fiber cable, ringdown solution)


The PKR8MSF installation kit is a ring down solution and includes two 8-channel FXS devices for extending a 2-wire analog (POTS) telephone line over fiber. Power supplies and 100 meters of Multimode fiber cable are also provided. 

PKR8MSF:8 Channel FXO/FXS to Fiber Multiplexer Installation Kit

The PKR8MSF kit provides a turnkey solution for extending eight Plain Old Telephone Service (POTS) analog phone lines over simplex Multimode fiber. This is a ring down application and utilizes two FXS devices at each end of the link. 

Technical Specifications of 8 Channel FXO/FXS to Fiber Multiplexer:

Power Requirements

12VDC, 2.0Amp

Connector (Tip & Ring)

RJ-11, 2-Wire Twisted Pair



Fiber Interface Connector


Fiber Cable

Multimode: 62.5/125 (Simplex)

Link Margin

Multimode: 11dBm

Audio Signal

Analog, 300Hz to 3.4KHz

Idle Channel Noise


Single Frequency Distortion


2nd Harmonic Distortion


Talk Battery

44 to 52VDC

Loop Current

40mA max. (off hook)

Ring Signal

92V peak (max), 15 to 67Hz

Line Impedance


Operating Temperature

0° to 50°C (32° to 122°F)

Storage Temperature

-40° to 70°C (-40° to 158°F)


Up to 95% relative humidity (non-condensing)


Up to 10,000 ft

Each 8 Channel FXO/FXS to Fiber Multiplexer Includes:

  • FXS Units (2)
  • External Power Supplies (90-240VAC)
  • 100 Meters (328 ft) of Multimode Cable - Simplex

As a complete package, you get everything you need in a plug & play solution for your phone-to-fiber requirements and you receive a Lifetime Warranty from a trusted manufacturer since 1958! Contact us for assistance by calling (1-800-537-2296) or opening a chat. We are here to help!

Additional Installation Kits Are Available For:

Key Features of 8 Channel FXO/FXS to Fiber Multiplexer Installation Kit

  • RJ11
  • 600 Ohms Impedance
  • LED Indicators
  • SFP Module Technology
  • 300Hz to 3.4KHz
  • Rackmount Options Manuals for 2-Wire Products
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