Home > AVAYA > TN775D - AVAYA Definity EPN Maintenance Circuit Pack
TN775D - AVAYA Definity EPN Maintenance Circuit Pack	TN775D - AVAYA Definity EPN Maintenance Circuit Pack List Price: $700.00 Our Price: $445.00 Product Code: AVA_TN775D

Description   The TN775D EPN maintenance board is used in maintenance and monitors power failure signals in an EPN cabinet in R7si/r or later.  Monitors clock, monitors and controls power supplies and battery charger, monitors air flow and high temperature sensors.  Provides 2 serial links to communicate with Expansion Interface (EI) circuit packs and provides an RS-232 interface for connection to an administration terminal.  Contains a 3-position switch to control emergency power transfer.  TN775 Contains a new DC to DC power converter and is used in maintenance to monitor the R7 or later processor in a Survivable Remote Expansion Port Network configuration. One year warranty.

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