AC

Alternating Current

ACS

Access Control Server

A/D

Analog To Digital Converter

AES

Advanced Encryption Standard

ANC

Anonymous Call

AP

Access Point

ASCII

American Standard Code for Information Interchange

B2BUA

Back to Back User Agent

BLF

Busy Lamp Field

Bool

Boolean Values. Specified as yes and no, or 1 and 0 in the profile

BootP

Bootstrap Protocol

CA

Certificate Authority

CAS

CPE Alert Signal

CDP

Cisco Discovery Protocol

CDR

Call Detail Record

CGI

Computer-Generated Mmagery

CID

Caller ID

CIDCW

Call Waiting Caller ID

CNG

Comfort Noise Generation

CPC

Calling Party Control

CPE

Customer Premises Equipment

CSV

Comma separated value

CWCID

Call Waiting Caller ID

CWT

Call Waiting Tone

D/A

Digital to Analog Converter

dB

decibel

dBm

dB with respect to 1 milliwatt

DHCP

Dynamic Host Configuration Protocol

DND

Do not disturb

DNS

Domain Name System

DoS

Denial of service

DRAM

Dynamic Random Access Memory

DSL

Digital Subscriber Loop

DSP

Digital Signal Processor

DST

Daylight Saving Time

DTAS

Data Terminal Alert Signal (same as CAS)

DTMF

Dual Tone Multiple Frequency

FQDN

Fully Qualified Domain Name

FSK

Frequency Shift Keying

FW

Firmware

FXS

Foreign eXchange Station

GMT

Greenwich Mean Time

GW

Gateway

HTML

Hypertext Markup Language

HTTP

Hypertext Transfer Protocol

HTTPS

HTTP over SSL

ICMP

Internet Control Message Protocol

IGMP

Internet Group Management Protocol

ILEC

Incumbent Local Exchange Carrier

IP

Internet Protocol

IPv4

Internet Protocol version 4

IPv6

Internet Protocol version 6

ISP

Internet Service Provider

ITSP

Internet Telephony Service Provider

ITU

International Telecommunication Union

IVR

Interactive Voice Response

LAN

Local Area Network

LBR

Low Bit Rate

LBRC

Low Bit Rate Codec

LCD

Liquid Crystal Display; also known as a screen

LDAP

Lightweight Directory Access Protocol

LED

Light-Emiting Diode

MAC address

Media Access Control Address

MC

Mini-Certificate

MGCP

Media Gateway Control Protocol

MOH

Music On Hold

MOS

Mean Opinion Score (1-5, the higher the better)

MPP

Multiplatform Phones

ms

Millisecond

MSA

Music Source Adaptor

MWI

Message Waiting Indication

NAT

Network Address Translation

NPS

Normal Provisioning Server

NTP

Network Time Protocol

OOB

Out-of-band

OSI

Open Switching Interval

PBX

Private branch exchange

PCB

Printed Circuit Board

PoE

Power over Ethernet

PR

Polarity Reversal

PS

Provisioning Server

PSQM

Perceptual Speech Quality Measurement (1-5, the lower the better)

PSTN

Public Switched Telephone Network

QoS

Quality of service

RC

Remove Customization

REQT

(SIP) Request Message

RESP

(SIP) Response Message

RSC

(SIP) Response Status Code, such as 404, 302, 600

RTP

Real Time Protocol

RTT

Round Trip Time

SAS

Streaming Audio Server

SDP

Session Description Protocol

SDRAM

Synchronous DRAM

sec

seconds

SIP

Session Initiation Protocol

SLA

Shared line appearance

SLIC

Subscriber Line Interface Circuit

SP

Service Provider

SSL

Secure Socket Layer

STUN

Session Traversal UDP for NAT

TCP

Transmission Control Protocol

TFTP

Trivial File Transfer Protocol

TLS

Transport Layer Security

TTL

Time to live

ToS

Type of service

UA

User Agent

uC

Micro-controller

UDP

User Datagram Protocol

URI

Uniform Resource Identifier

URL

Uniform Resource Locator

UTC

Coordinated Universal Time

VAR

Value Added Reseller

VLAN

Voice LAN

VM

Voicemail

VMWI

Visual Message Waiting Indication/Indicator

VoIP

Voice over Internet Protocol

VQ

Voice Quality

WAN

Wide Area Network

XML

Extensible Markup Language