Glossary

Revised: December 22, 2011; OL-21733-18

 

 

A
 
AA
Automated attendant
AAD
Alerts and Activities Display
AAR
Automated Alternate Routing
AC
Cisco Attendant Console
ACD
Automatic call distribution
ACE
Cisco Application Control Engine
ACF
Admission Confirm
ACL
Access control list
ACS
Access Control Server
AD
Microsoft Active Directory
ADAM
Active Directory Application Mode
ADPCM
Adaptive Differential Pulse Code Modulation
ADUC
Active Directory Users and Computers
AES
Advanced Encryption Standards
AFT
ALI Formatting Tool
AGM
Cisco Access Gateway Module
ALG
Application Layer Gateway
ALI
Automatic Location Identification
AMI
Alternate mark inversion
AMIS
Audio Messaging Interchange Specification
AMWI
Audible message waiting indication
ANI
Automatic Number Identification
AP
Access point
APDU
Application protocol data unit
API
Application Program Interface
ARJ
Admission Reject
ARP
Address Resolution Protocol
ARQ
Admission Request
ASA
Cisco Adaptive Security Appliance
ASP
Active server page
ASR
Automatic speech recognition
ATA
Cisco Analog Telephone Adapter
ATM
Asynchronous Transfer Mode
AXL
Administrative XML Layer

 

B
 
BAT
Cisco Bulk Administration Tool
BBWC
Battery-backed write cache
BES
Blackberry Enterprise Server
BFCP
Binary Flow Control Protocol
BGP
Border Gateway Protocol
BHCA
Busy hour call attempts
BHCC
Busy hour call completions
BIB
Built-in bridge
BLF
Busy lamp field
BOSH
Bidirectional-streams Over Synchronous HTTP
BPDU
Bridge protocol data unit
bps
Bits per second
BRI
Basic Rate Interface
BTN
Bill-to number

 

C
 
CA
Certificate Authority
CAC
Call admission control
CAM
Content-addressable memory
CAMA
Centralized Automatic Message Accounting
CAPF
Certificate Authority Proxy Function
CAPWAP
Control and Provisioning of Wireless Access Points
CAR
Cisco CDR Analysis and Reporting
CAS
Channel Associated Signaling
CBWFQ
Class-Based Weighted Fair Queuing
CCA
Clear channel assessment
CCD
Call Control Discovery
CCS
Common channel signaling
CDP
Cisco Discovery Protocol
CDR
Call detail record
CGI
Common Gateway Interface
CIF
Common Intermediate Format
CIR
Committed information rate
CKM
Cisco Centralized Key Management
CLEC
Competitive local exchange carrier
CLID
Calling line identifier
CM
Cisco Unified Communications Manager (Unified CM)
CMC
Client Matter Code
CME
Cisco Unified Communications Manager Express (Unified CME)
CMI
Cisco Messaging Interface
CMM
Cisco Communication Media Module
CNG
Comfort noise generation
CO
Central office
Co-located
Two or more devices in the same physical location, with no WAN or MAN connection between them
COM
Component Object Model
COP
Cisco Options Package
COR
Class of restriction
Co-resident
Two or more services or applications running on the same server
CoS
Class of service
CPCA
Cisco Unity Personal Assistant
CPI
Cisco Product Identification tool
CPN
Calling party number
CRS
Cisco Customer Response Solution
cRTP
Compressed Real-Time Transport Protocol
CSF
Client Services Framework
CSTA
Computer-Supported Telecommunications Applications
CSUF
Cross-Stack UplinkFast
CSV
Comma-separated values
CTI
Computer telephony integration
CTL
Certificate Trust List
CUBE
Cisco Unified Border Element, formerly the Cisco Multiservice IP-to-IP Gateway (IP-IP Gateway)
CUE
Cisco Unity Express
CUSP
Cisco Unified SIP Proxy
CVTQ
Cisco Voice Transmission Quality

 

D
 
DC
Domain controller
DDNS
Dynamic Domain Name Server
DDR
Delayed Delivery Record
DFS
Dynamic Frequency Selection
DHCP
Dynamic Host Configuration Protocol
DID
Direct inward dial
DIT
Directory Information Tree
DMVPN
Dynamic Multipoint Virtual Private Network
DMZ
Demilitarized zone
DN
Directory number
DNIS
Dialed number identification service
DNS
Domain Name System
DoS
Denial of service
DPA
Digital PBX Adapter
DSCP
Differentiated Services Code Point
DSE
Digital set emulation
DSP
Digital signal processor
DTIM
Delivery Traffic Indicator Message
DTLS
Datagram Transport Layer Security protocol
DTMF
Dual tone multifrequency
DTPC
Dynamic Transmit Power Control
DUC
Domino Unified Communications Services

 

E
 
E&M
Receive and transmit, or ear and mouth
EAP
Extensible Authentication Protocol
EAPOL
Extensible Authentication Protocol over LAN
EC
Echo cancellation
ECM
Error correction mode
ECS
Empty Capabilities Set
EI
Enhanced Image
EIGRP
Enhanced Interior Gateway Routing Protocol
ELIN
Emergency location identification number
EM
Extension Mobility
EMCC
Extension Mobility Cross Cluster
ER
Cisco Emergency Responder
ERL
Emergency response location
ESF
Extended Super Frame
E-SRST
Enhanced Survivable Remote Site Telephony

 

F
 
FAC
Forced Account Code
FCC
Federal Communications Commission
FCoE
Fibre Channel over Ethernet
FIFO
First-in, first-out
FQDN
Fully qualified domain name
FR
Frame Relay
FWSM
Firewall Services Module
FXO
Foreign Exchange Office
FXS
Foreign Exchange Station

 

G
 
GARP
Gratuitous Address Resolution Protocol
GC
Global catalog
GKTMP
Gatekeeper Transaction Message Protocol
GLBP
Gateway Load Balancing Protocol
GMS
Greeting management system
GPO
Group Policy Object
GPRS
General Packet Radio Service
GSM
Global System for Mobile Communication
GSS
Global Site Selector
GUI
Graphical user interface
GUP
Gatekeeper Update Protocol

 

H
 
H.225D
H.225 daemon
HDLC
High-Level Data Link Control
HMS
Hardware Media Server
HP
Hewlett-Packard
HSRP
Hot Standby Router Protocol
HTTP
Hyper-Text Transfer Protocol
HTTPS
HTTP Secure
HVD
Hosted virtual desktop
Hz
Hertz

 

I
 
IANA
Internet Assigned Numbers Authority
IAPP
Inter-Access Point Protocol
ICA
Independent Computing Architecture
ICCS
Intra-Cluster Communication Signaling
ICMP
Internet Control Message Protocol
ICS
IBM Cabling System
ICT
Intercluster trunk
IETF
Internet Engineering Task Force
IGMP
Internet Group Management Protocol
IIS
Microsoft Internet Information Server
IM
Instant messaging
IMAP
Internet Message Access Protocol
IntServ
Integrated Services
IntServ/DiffServ
Integrated Services/Differentiated Services
IOPS
Input/output operations per second
IP
Internet Protocol
IPCC
Cisco IP Contact Center
IPMA
Cisco IP Manager Assistant
IPPM
Cisco IP Phone Messenger
IPSec
IP Security
ISO
International Standards Organization
ISR
Integrated Services Router
ITEM
CiscoWorks IP Telephony Environment Monitor
ITU
International Telecommunication Union
IVR
Interactive voice response

 

J
 
JTAPI
Java Telephony Application Programming Interface

 

K
 
kbps
Kilobits per second
KPML
Key Press Markup Language

 

L
 
LAN
Local area network
LBR
Low bit-rate
LCD
Liquid crystal display
LCF
Location Confirm
LCS
Live Communications Server
LDAP
Lightweight Directory Access Protocol
LDAPS
LDAP over SSL
LDIF
LDAP Data Interchange Format
LDN
Listed directory number
LEAP
Lightweight Extensible Authentication Protocol
LEC
Local Exchange Carrier
LFI
Link fragmentation and interleaving
LLDP
Link Layer Discovery Protocol
LLDP-MED
Link Layer Discovery Protocol for Media Endpoint Devices
LLQ
Low-latency queuing
LRG
Local route group
LRJ
Location Reject
LRQ
Location Request
LSC
Locally significant certificate
LUN
Logical unit number
LWAP
Light Weight Access Point
LWAPP
Light Weight Access Point Protocol

 

M
 
MAC
Media Access Control
MAN
Metropolitan area network
Mbps
Megabits per second
MCM
Multimedia Conference Manager
MCS
Media Convergence Server
MCU
Multipoint Control Unit
MDN
Mobile Data Network
MDS
Mobile Data Services
MFT
Multiflex trunk
MGCP
Media Gateway Control Protocol
MIB
Management Information Base
MIC
Manufacturing installed certificate
MIME
Multipurpose Internet Mail Extension
MIPS
Millions of instructions per second
MISTP
Multiple Instance Spanning Tree Protocol
MITM
Man-in-the-middle
MLA
Cisco Multi-Level Administration
MLP
Multilink Point-to-Point Protocol
MLPP
Multilevel Precedence and Preemption
MLPPP
Multilink Point-to-Point Protocol
MLTS
Multi-line telephone system
MMoIP
Multimedia Mail over IP
MMP
Mobile Multiplexing Protocol
MOC
Microsoft Office Communicator
MoH
Music on hold
MOS
Mean Opinion Score
MPLS
Multiprotocol Label Switching
MRG
Media resource group
MRGL
Media resource group list
ms
Millisecond
MSP
Managed service provider
MTP
Media termination point
mW
Milli-Watt
MWI
Message Waiting Indicator

 

N
 
NAT
Network Address Translation
NDR
Non-delivery receipt
NENA
National Emergency Number Association
NFAS
Non-Facility Associated Signaling
NIC
Network interface card
NOC
Network operations center
NPA
Numbering Plan Area
NSE
Named Service Event
NSF
Network Specific Facilities
NTE
Named Telephony Event
NTP
Network Time Protocol

 

O
 
ORA
Open Recording Architecture
OSPF
Open Shortest Path First
OU
Organizational unit
OVA
Open Virtualization Archive
OWA
Outlook Web Access

 

P
 
PAC
Protected Access Credential
PBX
Private branch exchange
PC
Personal computer
PCI
Peripheral Component Interconnect
PCM
Pulse code modulation
PCoIP
PC over IP
PCTR
Personal call transfer rule
PD
Powered device
PHB
Per-hop behavior
PIN
Personal identification number
PINX
Private integrated services network exchange
PIX
Private Internet Exchange
PKI
Public Key Infrastructure
PLAR
Private Line Automatic Ringdown
PoE
Power over Ethernet
POTS
Plain old telephone service
PPP
Point-to-Point Protocol
pps
Packets per second
PQ
Priority Queue
PRI
Primary Rate Interface
PSAP
Public safety answering point
PSE
Power source equipment
PSK
Pre-Shared Key
PSTN
Public switched telephone network
PVC
Permanent virtual circuit

 

Q
 
QBE
Quick Buffer Encoding
QBSS
QoS Basic Service Set
QoS
Quality of Service
QSIG
Q signaling

 

R
 
RADIUS

Remote Authentication Dial-In User Service

RAS

Registration Admission Status

RCP

Remote Copy Protocol

RDNIS

Redirected Dialed Number Information Service

REST

Representational State Transfer

RF

Radio frequency

RFC

Request for Comments

RIM

Research In Motion

RIP

Routing Information Protocol

RIS

Real-Time Information Server

RMTP

Reliable Multicast Transport Protocol

RoST

RSVP over SIP Trunks

RSNA

Reservationless Single Number Access

RSP

Route/Switch Processor

RSSI

Relative Signal Strength Indicator

RSTP

Rapid Spanning Tree Protocol

RSVP

Resource Reservation Protocol

RTCP

Real-Time Transport Control Protocol

RTMP

Real-Time Messaging Protocol

RTMT

Cisco Real-Time Monitoring Tool

RTP
Real-Time Transport Protocol
RTSP
Real Time Streaming Protocol
RTT
Round-trip time

 

S
 
S1, S2, S3, and S4
Severity levels for service requests
SaaS
Software-as-a-Service
SAF
Service Advertisement Framework
SAN
Storage area networking
SBC
Session Border Controller
SCCP
Skinny Client Control Protocol
SCSI
Small Computer System Interface
SDI
System Diagnostic Interface
SDK
Software Development Kit
SDL
Signaling Distribution Layer
SDP
Session Description Protocol
SE
Cisco Systems Engineer
SF
Super Frame
SFTP
Secure File Transfer Protocol
SI
Standard Image
SIMPLE
SIP for Instant Messaging and Presence Leveraging Extensions
SIP
Session Initiation Protocol
SIS
Symbian installation system
SIW
Service Inter-Working
SLB
Server load balancing
SLDAP
Secure LDAP
SMA
Segmented Meeting Access
SMDI
Simplified Message Desk Interface
SMTP
Simple Mail Transfer Protocol
SNMP
Simple Network Management Protocol
SOAP
Simple Object Access Protocol
SPA
Shared Port Adapter
SQL
Structured Query Language
SRND
Solution Reference Network Design
SRST
Survivable Remote Site Telephony
SRSV
Survivable Remote Site Voicemail
SRTP
Secure Real-Time Transport Protocol
SRV
Server
SS7
Signaling System 7
SSID
Service set identifier
SSL
Secure Sockets Layer
SSO
Single Sign-On
STP
Spanning Tree Protocol
SUP1
Cisco Supervisor Engine 1
SUP2
Cisco Supervisor Engine 2
SUP2+
Cisco Supervisor Engine 2+
SUP3
Cisco Supervisor Engine 3

 

T
 
TAC
Cisco Technical Assistance Center
TAPI
Telephony Application Programming Interface
TCD
Telephony Call Dispatcher
TCER
Total Character Error Rate
TCL
Tool Command Language
TCP
Transmission Control Protocol
TCS
Terminal Capabilities Set
TDD
Telephone Device for the Deaf
TDM
Time-division multiplexing
TEHO
Tail-end hop-off
TFTP
Trivial File Transfer Protocol
TKIP
Temporal Key Integrity Protocol
TLS
Transport Layer Security
ToD
Time of day
ToS
Type of service
TPC
Transmit Power Control
TRaP
Telephone record and playback
TRP
Trusted Relay Point
TSP
Telephony Service Provider
TTL
Time to live
TTS
Text-to-speech
TTY
Terminal teletype
TUI
Telephony user interface

 

U
 
UAC
User agent client
UAS
User agent server
UCCN
Unified Client Change Notifier
UCS
Cisco Unified Computing System
UDC
Universal data connector
UDLD
UniDirectional Link Detection
UDP
User Datagram Protocol
UDPTL
Unnumbered Datagram Protocol Transport Layer
UMTS
Universal Mobile Telecommunications System
UN
Unsolicited SIP Notify
UNC
Universal Naming Convention
UP
User Priority
UPS
Uninterrupted power supply
URI
Uniform resource identifier
USB
Universal Serial Bus
UTIM
Cisco Unity Telephony Integration Manager
UTP
Unshielded twisted pair
UUIE
User-to-User Information Element

 

V
 
V3PN
Cisco Voice and Video Enabled Virtual Private Network
VAD
Voice activity detection
VAF
Voice-Adaptive Fragmentation
VATS
Voice-Adaptive Traffic Shaping
VCS
Cisco TelePresence Video Communication Server
VDI
Virtual Desktop Infrastructure
VIC
Voice interface card
VLAN
Virtual local area network
VMO
ViewMail for Outlook
VoIP
Voice over IP
VoPSTN
Voice over the PSTN
VoWLAN
Voice over Wireless LAN (WLAN)
VPIM
Voice Profile for Internet Mail protocol
VPN
Virtual private network
VRRP
Virtual Router Redundancy Protocol
VUI
Voice User Interface
VWIC
Voice/WAN interface card
VXC
Cisco Virtualization Experience Client
VXI
Cisco Virtualization Experience Infrastructure

 

W
 
WAN
Wide area network
WebDAV
Web-Based Distributed Authoring and Versioning
WEP
Wired Equivalent Privacy
WFQ
Weighted fair queuing
WINS
Windows Internet Naming Service
WLAN
Wireless local area network
WLC
Wireless LAN controller
WLSM
Cisco Wireless LAN Services Module
WMM
Wi-Fi Multimedia
WMM TSPEC
Wi-Fi Multimedia Traffic Specification
WPA
Wi-Fi Protected Access

 

X
 
XCP
Jabber Extensible Communications Platform
XML
Extensible Markup Language
XMPP
Extensible Messaging and Presence Protocol