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
