Extend 2 MPLS, PRI, or DATA T1 Circuits Over Fiber – Line Powered​

Fiber Optic Isolation Systems - 2 Channel T1 Mux
2 Channel T1 Mux

The 2 Channel T1 Mux Fiber Link system transports up to two T1 lines over two strands of fiber. It has B8ZS and AMI compatibility, with LED status indicators for system monitoring.

It provides cost effective, high density regenerated T1 over fiber in a compact RLH Fiber Link card form factor, compatible with any of our Fiber Link Card Housings. This hardened, rugged system is covered by our Limited Lifetime Warranty.


  • Applications for critical, high voltage, remote or unmanned locations that must remain operating 24/7/365
  • Simplex 60mA line powered on the drop side from the T1 span or HDSL NIU/RT unit, eliminating costly external power arrangements
  • Dual power capable, line or 24-56VDC
  • Hardened to operate in -40°F to +158°F (-40°C to +70°C) environments
  • Accommodates up to two incoming T1 4 wire copper lines over one fiber pair
  • Ideal for T1 applications where available fiber strands, enclosures or mounting space are limited
  • The same module may be used at either end of the fiber system, simplifying spares and ordering
  • Compatible with the 2 Channel T1 DIN System, allowing for different installation options at each end
  • Will operate from any HDSL-1, HDSL-2 or HDSL-4 NIU/RT signal. RJ48C T1 connections
  • Loop back features with independent channel testing
  • Provides simultaneous multiplexing and de-multiplexing of two asynchronous T1 channels
  • Frame integrity LED and remote T1 channel fault LEDs
  • Available in Single or Multimode
  • Available with ST or SC Connectors
  • May be used with any RLH fiber link card housing
  • Limited Lifetime Warranty
  • Made in USA

Transmission Method:
Frequency modulated light via two optical fibers

Multimode: 850nm
Singlemode: 1310nm

Fiber Type/Distance:
Multimode (62.5/125µm): 1.5 miles/2.4km
Singlemode (9/125µm): 9 miles/15km; Long Haul 37 miles/60km

Fiber Connector Type:
ST or SC

7in. x 4in. x 1in. (177.8mm x 101.6mm x 25.4mm)
(Standard RLH Fiber Link Card Form Factor)

Operating Temperature:
-40˚F to +158˚F (-40˚C to +70˚C)

Operating Humidity:
95% non-condensing

General Information

Specialized Drawings


2 Channel T1 Mux System
2 Channel T1 Mux System


Lead Time: 1 to 2 Weeks*

For product questions, volume pricing and/or delivery outside of the US and Canada, please contact sales.


2 Channel T1 Mux

Product configurationModeConnectorDistanceFibersPart numberPrice
Multimode, ST, 2.4km/1.5 miles, Dual FiberMultimodeST2.4km/1.5 milesDual Fiber2T4-02-1$1,450.00
Singlemode, ST, 15km/9 miles, Dual FiberSinglemodeST15km/9 milesDual Fiber2T4-20-1$1,600.00
Singlemode, ST, 60km/37 miles, Dual FiberSinglemodeST60km/37 milesDual Fiber2T4-21-1$1,810.00
Singlemode, SC, 15km/9 miles, Dual FiberSinglemodeSC15km/9 milesDual Fiber2T4-10-1$1,720.00
Singlemode, SC, 60km/37 miles, Dual FiberSinglemodeSC60km/37 milesDual Fiber2T4-11-1$1,930.00

*Lead times are estimates and may vary. You will be contacted within 1 business day to go over the details of your order. If you require a specific date, let us know!
*Days = Business Days

WarningWarning: This product can expose you to chemicals including arsenic, which is known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov.

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