Extend HDSL 1, HDSL 2, or HDSL 4 Telco Circuits Over Fiber – Line Powered

HDSL (Universal)
CO Card

NEBS Level 3The RLH HDSL (Universal) fiber link card interfaces with any HDSL technology. The system interfaces one 2-pair HDSL1 or HDSL4 line, or up to two 1-pair HDSL2 lines.

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


  • Universal HDSL compatibility
  • CO side is simplex powered
  • HDSL1, HDSL2 or HDSL4 compatible
  • Available in Single or Multimode
  • Available with ST or SC Connectors
  • Compatible with a wide variety of Card Housings
  • 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): 1640 feet/500m
Singlemode (9/125µm): 9 miles/15km

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

HDSL (Universal)
HDSL (Universal) System 1
HDSL (Universal)
HDSL (Universal) System 2

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 www.P65Warnings.ca.gov.

RLH Industries - Fiber Optic Link
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