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T1/E1 Fiber Optic Line Driver Rackmount Card, ST, 850-nm Multimode

Extend T1/E1 lines from demarcation all the way to your equipment.


Please call 877-877-2269 for a replacement product or part.
Extended Double Diamond™ Warranty Available (3 Additional Year)

Product Features

  • Multimode models use a VCSEL light source and send data up to 4.3 miles (7 km).


  • Converts T1 or E1 signals to fiber optic pulses.
  • Provides high speed with security.
  • Supports AMI, B8ZS, and HDB3 line codes.

  • Save money and extend your T1/E1 links yourself without losing speed, clarity, or data integrity!

    The phone company brings a T1 or E1 line to your building and terminates it. That's called the demarcation point. For a price, they'll extend the line from there to your T1 or E1 equipment. Or you can do it yourself with a Fiber Optic Line Driver. Get the extra distance you need and immunity to electrical noise and surges with fiber cable.

    These drivers convert T1's or E1's electrical signals to fiber optic light pulses and maintain the speed, clarity, and data integrity of your T1 or E1 line. Framing transparency and selectable options enable transmission with AMI, HDB3, or B8ZS signals.

    Our T1/E1 Fiber Optic Line Drivers also enable you to switch between T1 and balanced or unbalanced E1. Choose from standalone or card models.
    NOTE: Single-mode versions also available.

    NOTE: Must be used in pairs.

    Tech Specs

    Approvals CE
    Connectors (1) DB15 F, (2) BNC F, (1) pair of ST®
    Dimensions 0.9"H x 6.2"W x 9"D (2.3 x 15.7 x 22.9 cm)
    Distance 4.3 miles (7 km) maximum
    Interface DSX-1, G.703 balanced or unbalanced; 75, 100, or 120 ohms, jumper-selectable
    Power From the rack (RM110A)
    Speed 1.544 Mbps or 2.048 Mbps

    NOTE: Must be used in pairs.

    This product works with:
  • Ceramic Multimode Fiber Optic Patch Cable, ST–ST (EFN110)
  • Single-Mode Duplex Fiber Optic Cable, ST–ST (EFN5009)
  • T1 Cable, Straight-Pinned, RJ-48C/RJ-48C (ETNMRS01)
  • RackNest 2/14 (RM110A, RM110AE)
  • RackNest 2/14 (RM110A)
    Questions? Contact our FREE Tech Support.

    * Technical specification weight is the unit weight. It is not the packaged shipping weight. For shipping weight, please contact Black Box customer service at 877-877-2269.

  • Support


    Double Diamond Warranty

    Extended 1 Year Warranty Available

    Protect your purchase with an additional 1 Year Double Diamond™ warranty!
    Cost: $104.00

    Extended 3 Year Warranty Available

    Protect your purchase with an additional 3 Year Double Diamond™ warranty!
    Cost: $207.99


    Double Diamond™ Warranty (Standard)

    Take the risk out of equipment purchases with the Double Diamond™ Warranty from Black Box Network Services.

    The Double Diamond Warranty is our warranty that protects your Black Box® brand products* from accidental damage, including drops, water, and power surges.

    The T1/E1 Fiber Optic Line Driver Rackmount Card, ST, 850-nm Multimode comes with a standard 1 Year Double Diamond™ Warranty (Standard) already included.

    During the warranty period, Black Box Network Services will repair or replace your damaged equipment within one week of receipt at NO CHARGE!*

    Plus, get an Extended Double Diamond Warranty.

    You can also extend your warranty or protect a previously purchased Black Box® brand product** for an additional year—for only 10% of the purchase price! Or, extend your coverage for a full three years for only 20% of the purchase price!

    Ordering an extended warranty is easy: When viewing a product in your shopping cart, just select the one or three years of additional coverage in the dropdown menu under “Warranty Options.” For details, contact Customer Service at 724-746-5500.

    * Warranty subject to certain exclusions and limitations ** Certain products may not be eligible.

    What’s more, we also have a 45-day return policy. Simply call Customer Service for a Return Authorization (RA) number, return your product in new condition and in the original package, and receive a full refund.