AC

Access Control Lists

LCD

Liquid Crystal Display

ACD

Automatic Call Distribution

LD

Long Distance

ALI

Automatic Location Identifier

LED

Light Emitting Device

AN

Application Note

MAC

Moves, Adds, Changes

ANI

Automatic Number Identification

MAC Address

Medium Access Control Address

ARPU

Average Revenue Per User

MBX

Mailbox

ASP

Application Service Provider

MDF

Main Distribution Frame

ATA

Analog Telephone Adapter

MG

Media Gateway

BGP

Border Gate Protocol

MGCP

Media Gateway Control Protocol

BLA

Bridged Line Appearance

MLA

Multiple Line Appearance

BLND

Blind Transfer

MOH

Music On Hold

BRI

Basic Rate Interface

MOS

Mean Opinion Source

CAPEX

Capital Expenditure

MOU

Minutes of Usage

CBX

Call Box

Mbps

Megabits per second

CCB

Customer Convenience Block

MPOE

Minimum Point of Entry

CDDD

Customer Desired Due Date

MRC

Monthly-recurring costs

CLEC

Competitive Local Exchange

MWI

Message Waiting Indicator

CODEC

Compression/Decompression

MX

Mail Exchange

COS

Class of Service

NAT

National Address Transfer

CM

Custom

NIU

Network Interface Unit

CPE

Customer Premise Equipment

NOC

Network Operations Center

CDR

Call Detail Records

NRC

Non-recurring Costs

CNTL

Control

OA

Office Administration Portal

CPN

Cisco Powered Network

OPS

Order Processing System

CPS

Calls Per Second

OSS

Operational Support Systems

DHCP

Dynamic Host Configuration Protocol

PBX

Private Branch Exchange

DID

Direct Inward Dial

PC

Personal Computer

DM

Decision Maker

POC

Probability of Close

DND

Do Not Disturb

POP

Point of Presence

DNIS

Dialed Number Identification Service

PRI

Primary Rate Interface

DRM

Design Review Meetings

PSTN

Public Switch Telephone Network

DSL

Digital Subscriber Line

PWR

Power

DSS

Direct Station Select

QOS

Quality of Service

FOC

Firm Order Commit

RTP

Real Time Protocol

FXO

Foreign Exchange Office

SDSL

Symmetrical Digital Subscriber Line

FXS

Foreign Exchange Subscriber

SIP

Session Initiation Protocol

GBIC

Gigabyte Interface Card

SLA

Service Level Agreement

IAD

Integrated Access Divide

SOHO

Small Office Home Office

ICB

Individual Case Basis

SOW

Statement of Work

IDF

Independent Distribution Frame

SQL

Structured Query Language

IETF

Internet Engineering Task Force

TCO

Total Cost of Ownership

ILEC

Incumbent Local Exchange Carrier

TFTP

Trivial File Transfer Protocol

IMAP

Internet Message Access Protocal

UPS

Uninterruptible Power Source

IOS

Internet Operating System

VLAN

Virtual Local Area Network

IP

Internet Protocol

VOBB

Voice Over Broadband

ISDN

Integrated Service Digital Network

VPN

Virtual Phone Network

ISP

Internet Service Provider

WAP

Wireless Application Protocol

ITFS

International Toll Service Fee

WAV

Windows Media Format for Voice

IW

Inside Writing

WEP

Wired Equivalency Privacy

IXC

Internet Exchange Carrier

WIC

WAN Interface Card

KSU

Key System Unit

XML

Extensible Market Language