Lucent Technologies LambdaUnite Installation Manual page 319

Alarm Correlation
The search for a directly-reported alarm that can account for a given symptomatic condition.
Alarm Severity
An attribute defining the priority of the alarm message. The way alarms are processed depends
on the severity.
Alarm Suppression
Selective removal of alarm messages from being forwarded to the GUI or to network
management layer OSs.
Alarm Throttling
A feature that automatically or manually suppresses autonomous messages that are not priority
alarms.
Aligning
Indicating the head of a virtual container by means of a pointer, for example, creating an
Administrative Unit (AU) or a Tributary Unit (TU).
AMI (Alternate Mark Inversion)
A line code that employs a ternary signal to convert binary digits, in which successive binary
ones are represented by signal elements that are normally of alternative positive and negative
polarity but equal in amplitude and in which binary zeros are represented by signal elements
that have zero amplitude.
Anomaly
A difference between the actual and desired operation of a function.
ANSI
American National Standard Institute
APD
Avalanche Photo Diode
APS (Automatic Protection Switch)
A protection switch that occurs automatically in response to an automatically detected fault
condition.
ASCII (American Standard Code for Information Interchange)
A standard 7-bit code that represents letters, numbers, punctuation marks, and special characters
in the interchange of data among computing and communications equipment.
ASN.1
Abstract Syntax Notation 1
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365-374-059
Issue a, January 2002
Lucent Technologies G L O S S A R Y
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