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Analog Async Bell 202T Modem - Leased-Line, AC power

The heavy-duty, reliable modem for industrial jobs.


Limited Quantity In Stock
1 Year Double Diamond™ Warranty (Standard)

*Required field

Product Features

  • Ideal for banks, PLCs, and industry or wherever polling equipment is common.
  • Supports the Bell 202T modem standard, a prerequisite for many leased-line applications.
  • Built tough for outdoor environments.


  • Operates over point-to-point or multipoint polled systems, full- or half-duplex over 2- or 4-wire circuits.
  • Perfect for industrial, SCADA, and metering applications.
  • Works on indoor and outdoor copper lines that do not meet conventional specifications.
  • Circuitry prevents data and carrier-detect errors over noisy lines.
  • Antistreaming capability.
  • Enables users to verify transmitted and received data via its diagnostic feature.
  • Data rates up to 1200 bps over unconditioned lines or 1800 bps over conditioned lines.
  • Standalone AC and DC, and rackmount card models are available.
  • Card version installs in the BLACK BOX® Modem Rack II (RM421A).

  • Tech Specs

    Connectors RS-232: (1) DB25 F; Telco: (1) RJ-45; 4-wire mode: Pins 4 and 5 for Transmit, Pins 3 and 6 for Receive; 2-wire mode: Pins 4 and 5 for Transmit/Receive
    Modulation FSK
    Power 100-240 VAC, 50-60 Hz, external
    RTS/CTS Delay 8, 33, 59, or 219 ms
    Size 2.3"H x 7"W x 9.6"D (5.8 x 17.8 x 24.4 cm)
    Weight 1.6 lb. (0.7 kg)
    This product works with:
  • DB9 Extension Cable (with EMI/RFI Hoods) (EDN12H)
  • The MD1970C also works with:
  • Modem Rack II (RM421A)
  • 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.



    Double Diamond Warranty Diamond

    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 Analog Async Bell 202T Modem - Leased-Line, AC power 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.