AAAA

authentication, authorization, accounting, and allocation

ABR

available bit rate

ACL

access control list

AF

assured forwarding

AH

authentication header

API

application programming interface

AR

acceptance review

ARCP

asynchronous remote copy

ARP

Address Resolution Protocol

AS

autonomous system

ATM

asynchronous transfer mode

AToM

ATM monitoring

BE

best effort

BER

bit error rate

BGPv4

Border Gateway Protocol version 4

BSD

Berkeley Software Distribution

BUS

broadcast/multicast server

CA

certificate authority

CAC

call admission control

CAD

computer-aided design/computer-aided drawing

CBC

cipher block chaining

CBQ

class-based queuing

CBR

constant bit rate

CD

compact disk

CDN

content-delivery network

CDR

critical design review

CF

composite flow

CHAP

Challenge-Response Authentication Protocol

CIDR

classless interdomain routing

CIR

committed information rate

CLI

command line interface

CLR

cell loss ratio

CMIP

Common Management Information Protocol

CMOT

CMIP over TCP/IP

CMR

cell misinsertion ratio

COPS

common open policy services

CORBA

common object request broker architecture

CoS

class of service

COTS

commercial off the shelf

CPU

central processing unit

CRM

customer relationship management

CT

computed tomography

DES

data-encryption standard

DET

deterministic

DHCP

Dynamic Host Configuration Protocol

DiffServ

differentiated services

DMZ

demilitarized zone

DNS

domain name system

DR

default route

DSCP

differentiated services code point

DSL

digital subscriber loop

DSx

digital signal ( x 1, 3)

DSU

data service unit

dWDM

dense wavelength division multiplexing

EBGP

external BGP

ECS

engineering compute server

EF

expedited forwarding

EGP

External Gateway Protocol

EMS

element management system

ENET

Ethernet

EOC

extended operational capability

ERP

enterprise resource planning

ESP

encapsulating security payload

f

flow

FA

functional area