TN420C - TN744E

Avaya Definity TN570B Expansion Interface Circuit Pack

  • Like New: $39.98
Availability: In Stock

TN570B Expansion Interface

This card will provide an interface with the TDM bus and pack bus between the two. Fiber optic links interconnecting cabinets used in a Port Network (PN) between a PN and another PN in a direct-connect system.


  • Provides an interface
  • Supports control channel applications
  • Includes Atlas 1-Year Warranty with Extended Warranty options available!

Package Includes

  • TN570B Expansion Interface

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