Control System - Lucent Technologies LambdaXtreme Alarm Messages And Trouble Clearing Manual

Control System

Overview
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Purpose
Types of Controllers
Control System
Maintenance Philosophy
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365-575-783R1.1
Issue 1, June 2002
This section provides information on the various system controllers
and their functionality to assist during trouble clearing procedures.
™
The LambdaXtreme
controllers:
•
NCTL
•
SCTL
•
BCM
System software monitors the health of each controller, including:
•
effect of control failures on the system
•
detection, isolation, and reporting of control failures
•
recovery from control failures
The Control System Maintenance philosophy includes:
•
Automatic Fault Recovery — The control system automatically
recovers from power surges or interruptions with no
LambdaXtreme Transport CIT action required. The system is
automatically restored to its state prior to the failure.
•
Non-Service Affecting Control Faults and Processor Resets —
Control faults and processor restarts do not affect service. The
system continues to operate in the state in which it was operating
before the control failure or reset (autonomous or manual)
occurred. This includes maintaining existing transmission and
protection switching states.
The removal and insertion of a control pack (e.g., NCTL, SCTL) in a
quiescent system is non-service affecting.
Lucent Technologies - Proprietary
See notice on first page
Transport System includes the following
Maintenance
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