Transport 2 Circuits of ADSL Over Fiber

Fiber Optic Isolation Systems - 2 Channel ADSL
2 Channel ADSL

The RLH 2 Channel ADSL Fiber Link Card system supports two channels of ADSL copper service over a single pair of singlemode or multimode fiber optic cable. This environmentally hardened system converts the copper signals into an optical signal over fiber, then converts the fiber optic signal back into 2 Wire DSL copper service for customer use.

Transmitting ADSL signals over fiber optic cable allows for network extension over long distances, and provides electrical isolation between both ends of the network. The RLH ADSL fiber system is compatible with DSL download data rates of up to 2.75Mbps.

Each card requires a 44-56VDC 100mA local power source to operate. RLH carries several compatible power supplies, but any compatible DC power source is acceptable.This hardened, rugged system is covered by our Limited Lifetime Warranty.

This fiber link card is designed to be installed into any of the RLH Fiber Link Card Housings, and occupies a single card slot.


  • Hardened to operate in -40°F to +158°F (-40°C to +70°C)
  • 44-56VDC 100mA local power source at each end
  • Network extension, singlemode (8mi./13km) / multimode (1640 ft./500m)
  • ST or SC fiber connector types
  • Each card can accept 2 ADSL lines, maximizing throughput
  • Critical, high voltage, remote or un-manned locations operating 24/7/365
  • DSL download data rates of up to 2.75Mbps
  • Limited Lifetime Warranty
  • Made in USA

Transmission Method:
Amplitude modulated light via two optical fibers

Multimode: 850nm
Singlemode: 1310nm

Fiber Type/Distance:
Multimode (50 or 62.5µm/125µm): 1640 feet/500m
Singlemode (8~9µm/125µm): 8 miles/13km

Fiber Connector Type:
ST or SC Fiber Female Connectors

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

Maximum Data Range:
2.75Mbps Downstream and 2.75Mbps Upstream

General Information Specialized Drawings Miscellaneous
2 Channel ADSL System
2 Channel ADSL System
2 Channel ADSL with Optional POTS System
2 Channel ADSL with Optional POTS System

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


Please contact us to get a quote for your project.

*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

RLH Industries - Fiber Optic Link
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