Glossary

AAL

ATM Adaptation Layer

ABN

Area Border Node

ABR

Area Border Router

ADM

Add-Drop Multiplexer

AIS

Alarm Indication Signal

AIS-L

Alarm Indication Signal—Line

AIS-P

Alarm Indication Signal—Path

AP

Access Point

APD

Avalanche Photo Diode

APS

Automatic Protection Switching

AS

Autonomous System

ASBR

Autonomous System Border Router

ASE

Amplifier Spontaneous Emission

ASON

Automatic Switched Optical Network

ATM

Asynchronous Transfer Mode

AU-n

Administrative Unit—level n

AUG

Administrative Unit Group

BER

Bit Error Rate

BLSR

Bidirectional Line Switched Ring

BGP

Border Gateway Protocol

BIP

Bit Interleaved Parity

BITS

Building Integrated Timing Supply

CLNP

Connectionless Network Protocol

CMIP

Common Management Information Protocol

CO

Central Office

CORBA

Common Object Request ...

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