Avaya Definity TN570C Expansion Interface
TN420C - TN744E

Avaya Definity TN570C Expansion Interface

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TN570C 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. used in SREPN (Survivable Remote Expansion Port Network) R7 or Later


  • Provides an interface
  • Supports control channel applications
  • Used when ISDN-BRI and/or ASAI is connected in an EPN
  • Used in R7 or later
  • One Year Warranty Included with Extended Warranty Options at Low Prices!

Package Includes

  • TN570C Expansion Interface

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