Avaya/Definity Circuit Packs TN429 - TN748

Avaya Definity TN570D Expansion Interface Circuit Pack

  • Like New: $48.99
Availability: In Stock

TN570D 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
  • One Year Warranty Included with Extended Warranty Options at Low Prices!

Package Includes

  • TN570D Expansion Interface

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