Glossary

A---B

ACF

admission confirm

ACL

access control list

ADPCM

adaptive differential pulse code modulation

AMIS-A

Audio Messaging Interchange Specification Analog

ANI

automatic number identification

ARQ

admission request

ASIC

application specific integrated circuit

AVVID

See Cisco AVVID.

BRI

Basic Rate Interface. See also PRI.

C

CAC

call admission control

CAS

channel associated signaling

CBWFQ

class based weighted fair queuing

CDP

Cisco Discovery Protocol

CIR

committed information rate

Cisco AVVID

Cisco Architecture for Voice, Video, and Integrated Data.

CLID

calling line ID

CO

central office

codec

coder-decoder

CoS

class of service

CPE

customer premises equipment.

cRTP

compressed Real-time Transport Protocol

D

DDI

direct dial inward

DHCP

Dynamic Host Configuration Protocol

DID

direct inward dial

DN

directory number

DNIS

dialed number identification service

DSCP

differentiated services code point

DSP

digital signal processor

DTMF

dual tone multifrequency

E---F

E1

Wide-area digital transmission scheme. E1 is the European equivalent of a T1 line.

E&M

recEive and transMit (or Ear and Mouth)

EIGRP

Enhanced Interior Gateway Routing Protocol

FB

forward-busy

FIFO

first-in, first-out

FNA

forward-no-answer

FXO

foreign exchange office

FXS

foreign exchange station

G---H

GK

gatekeeper

GW

gateway

H.323 RAS

Registration, Admission, and Status

HSRP

Hot Standby Routing Protocol

I---L

IETF

Internet Engineering Task Force

IMAP

Internet Message Access Protocol

ISDN

Integrated Services Digital Network

ITU-T

Telecommunication standardization sector of ITU

IVR

integrated voice response

JTAPI

Java Telephony API. See also TAPI.

LBR

low bit rate

LCD

liquid crystal display

LDAP

Lightweight Directory Access Protocol

LFI

link fragmentation and interleaving

LLQ

low latency queuing

M

MCM

Multimedia Conference Manager

MCS

media convergence server

MGCP

Media Gateway Control Protocol

MIME

Multipurpose Internet Mail Extension

MLPPP

Multilink Point-to-Point Protocol

MTP

media termination point

MWI

message waiting indicator

N---Q

NIC

network interface card

OSPF

Open Shortest Path First

PBX

Private Branch Exchange

PCM

pulse code modulation

PFC

Policy Feature Card

PGP

Pretty Good Privacy

POTS

plain old telephone service

PQ

priority queueing

PRI

Primary Rate Interface

PSTN

public switched telephone network

PVID

port VLAN ID

QoS

quality of service

R

RAS

Registration, Admission, and Status protocol

route list

Replaces route point in CallManager 3.0.

RRQ

registration request

RSVP

Resource Reservation Protocol

RTP

Real-time Transport Protocol

S

SA/DA

sending address/destination address

Skinny Station Protocol

A Cisco protocol using low bandwidth messages that communicate between IP devices and the Cisco CallManager.

SMDI

Simplified Message Desk Interface (or Station Message Desk Interface)

SMTP

Simple Mail Transfer Protocol

SNMP

Simple Network Management Protocol

T---U

TAPI

Telephony Application Programming Interface. See also JTAPI.

TDM

time division multiplexing

TFTP

Trivial File Transfer Protocol

ToS

type of service

UPS

uninterruptible power supply

V

VAD

voice activity detection

VIC

voice interface card

VLAN

virtual LAN

VoIP

voice over IP

VPIM

voice profile for Internet messaging

VVID

voice VLAN ID

W---Z

WRED

weighted random early detection

WRR

weighted round-robin

A---B
ACF	admission confirm
ACL	access control list
ADPCM	adaptive differential pulse code modulation
AMIS-A	Audio Messaging Interchange Specification Analog
ANI	automatic number identification
ARQ	admission request
ASIC	application specific integrated circuit
AVVID	See Cisco AVVID.
BRI	Basic Rate Interface. See also PRI.

C
CAC	call admission control
CAS	channel associated signaling
CBWFQ	class based weighted fair queuing
CDP	Cisco Discovery Protocol
CIR	committed information rate
Cisco AVVID	Cisco Architecture for Voice, Video, and Integrated Data.
CLID	calling line ID
CO	central office
codec	coder-decoder
CoS	class of service
CPE	customer premises equipment.
cRTP	compressed Real-time Transport Protocol

D
DDI	direct dial inward
DHCP	Dynamic Host Configuration Protocol
DID	direct inward dial
DN	directory number
DNIS	dialed number identification service
DSCP	differentiated services code point
DSP	digital signal processor
DTMF	dual tone multifrequency

E---F
E1	Wide-area digital transmission scheme. E1 is the European equivalent of a T1 line.
E&M	recEive and transMit (or Ear and Mouth)
EIGRP	Enhanced Interior Gateway Routing Protocol
FB	forward-busy
FIFO	first-in, first-out
FNA	forward-no-answer
FXO	foreign exchange office
FXS	foreign exchange station

G---H
GK	gatekeeper
GW	gateway
H.323 RAS	Registration, Admission, and Status
HSRP	Hot Standby Routing Protocol

I---L
IETF	Internet Engineering Task Force
IMAP	Internet Message Access Protocol
ISDN	Integrated Services Digital Network
ITU-T	Telecommunication standardization sector of ITU
IVR	integrated voice response
JTAPI	Java Telephony API. See also TAPI.
LBR	low bit rate
LCD	liquid crystal display
LDAP	Lightweight Directory Access Protocol
LFI	link fragmentation and interleaving
LLQ	low latency queuing

M
MCM	Multimedia Conference Manager
MCS	media convergence server
MGCP	Media Gateway Control Protocol
MIME	Multipurpose Internet Mail Extension
MLPPP	Multilink Point-to-Point Protocol
MTP	media termination point
MWI	message waiting indicator

N---Q
NIC	network interface card
OSPF	Open Shortest Path First
PBX	Private Branch Exchange
PCM	pulse code modulation
PFC	Policy Feature Card
PGP	Pretty Good Privacy
POTS	plain old telephone service
PQ	priority queueing
PRI	Primary Rate Interface
PSTN	public switched telephone network
PVID	port VLAN ID
QoS	quality of service

R
RAS	Registration, Admission, and Status protocol
route list	Replaces route point in CallManager 3.0.
RRQ	registration request
RSVP	Resource Reservation Protocol
RTP	Real-time Transport Protocol

S
SA/DA	sending address/destination address
Skinny Station Protocol	A Cisco protocol using low bandwidth messages that communicate between IP devices and the Cisco CallManager.
SMDI	Simplified Message Desk Interface (or Station Message Desk Interface)
SMTP	Simple Mail Transfer Protocol
SNMP	Simple Network Management Protocol

T---U
TAPI	Telephony Application Programming Interface. See also JTAPI.
TDM	time division multiplexing
TFTP	Trivial File Transfer Protocol
ToS	type of service
UPS	uninterruptible power supply

V
VAD	voice activity detection
VIC	voice interface card
VLAN	virtual LAN
VoIP	voice over IP
VPIM	voice profile for Internet messaging
VVID	voice VLAN ID

W---Z
WRED	weighted random early detection
WRR	weighted round-robin

Table of Contents

Glossary