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Adtran Atlas 550 Dual X.21/V11 USSI Module 4200754L3


Compare at: $1,067.99

(You save $178.00)

SKU: 4200754L3
Condition: Refurbished
In Stock

A-Stock: Great cosmetic condition.

B-Stock: May contain cosmetic blemishes such as surface scratches, worn or yellowed buttons, etc...

These phones have been tested and are fully functional. All phones are refurbished and come individually boxed with new curly cords, new designations, and a one year warranty!


The ATLAS 550 Dual X.21/V11 Universal Synchronous Serial Interface (USSI) Module combines with other ATLAS components to provide solutions for a variety of wide area networking applications.

Adtran 4200754L3 Features:

  • Provides two X.21/V11 synchronous serial ports
  • Each module supports one interface type on both ports
  • Each port supports Nx56/64 Kbps operation up to 2.048 Mbps
  • Supports Frame Relay emulation and passthrough


  • (1) Adtran 4200754L3 Atlas 550 Dual X.21/V11 USSI Module
  • 1 Year Warranty
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