A

authentication, authorization and accounting

Access Control List

Add/Drop Multiplexer (typically used to interconnect slow links with fast links on an SDH link)

Alarm Indication Signal

alternate mask inversion

Asynchronous Transfer Mode

ATM User Service Module (Narrowband)

ATM Switch Service Module (Broadband)

B

binary 8-zero substitution

Basic Cabinet

bit error rate tester

Border Gateway Protocol

Basic Rate Access

Basic Rate Interface

Basic Service Handler (component of the iMSS Call Agent)

C

Cisco 12000 Manager

Call Admission Control

Cisco Access Registrar

Communicating Applications Specification

Clear Channel Data

Channel Associated Signalling

Call Detail Record

Cisco Element Management Framework

Cisco Info Center

Cisco Internetwork Operating System

Custom Local Area Signalling Services

Telephone switch offering only long distance services

Telephone switch offering advanced call features and local access

Competitive Local Exchange Carrier. Also called Other Local Operator

Calling Line Identification

Cisco CNS Notification Engine

Cisco Networking Services

Central Office

coder-decoder

Common Object Request Broker Architecture

class of service

Customer Premise Equipment

Centralized Processing Server (component of the iMSS Call Agent)

Capability Set 1

Cisco Service Management

CiscoWorks 2000

Cisco WAN Manager

D

Dial Feature Card

Differentiated Services. The use of ToS bits in the IP header to indicate traffic importance and drop preference

Dial Number Identification Service

Domain Name System

Destination Point Code

digital service zero (0). 64 Kbps POTS telephone line, encoded using PCM

DiffServ Code Point

Digital Signal Processor

Digital Subscriber Signalling System Number 1

E

Traffic leaving the network

element management system

European Telecommunications Standards Institute

F

Fault and Trouble Manager

File Transfer Protocol

G

Gatekeeper

Gateway

H

Hot Standby Router Protocol

I

Integrated Access Device

Initial Address Message

Initial Forward and/or Final Address Message

Interior Gateway Protocol

Incumbent Local Exchange Carrier

Intra Module Control Protocol

Italtel Multiservice Switching System

intermachine trunk (trunk used between CLASS 4 switches)

Intelligent Network

Intelligent Network Application Part

Traffic entering the network

See Cisco IOS

Internet Protocol

Internetwork Performance Monitor

Integrated Services Digital Network

Intermediate System-to-Intermediate System

Interconnection Structure Module (component of the iMSS Call Agent)

ISDN User Part

IP Transfer Point

International Telecommunications Union Telecommunications Standardization Sector

Interactive Voice Response

Inter Virtual Switch

L

Lightweight Directory Access Protocol

Label Distribution Protocol

Local Digital Switch (typically a Class 5 switch)

Local Exchange

Label Edge Router

Local Number Portability

Label Switch Router

M

Media Gateway Controller

Media Gateway Control Protocol, RFC2705. Version 0.1 is the November 1998 version of this RFC, which is available as an (expired) Internet Draft

multimode fibre

Multiprotocol Label Switching

Mobile Switching Center

Multiservice Element Manager

N

network access server

Narrow Band

Network Management System

Network Operations Center

Network Resource Database

Named Signaling Events. Used within Voice over IP RTP streams to indicate in-band signaling. Functionally equivalent to AAL2 type 3 packets in AAL2

Number Translation Service

O

Operations and Maintenance

Other Local Operator. Also called Competitive Local Exchange Carrier

Operation and Maintenance Server (component of the iMSS Call Agent)

Originating Point Code

Optical Peripheral Module (component of the iMSS Call Agent)

Open Packet Telephony

Open Shortest Path First

Operations Support System

P

Provider Router

private automatic branch exchange (Europe)

private branch exchange (U.S.)

Point Code

Provider Edge Router

Pan European Backbone

Protocol Handling Server (component of the iMSS Call Agent)

public land mobile network

Point of Interconnection

point of presence

Packet Over SONET

plain old telephone service (typically considered an analog phone connected with an RJ11 jack with normal telephone service)

Primary Rate Access

Primary Rate Interface

Public Switched Telephone Network

Public Telephone and Telegraph (typically the major government-owned incumbent telephone company in a country)

permanent virtual circuit

Processor Switch Module

Q

Quality of Service

R

Remote Authentication Dial-In User Service

Remote Alarm Indication

Resource Manager Essentials

Route Processor Module

Resource Reservation Protocol

Real Time Control Protocol

Real-Time Monitor

Real-Time Transport Protocol. Used by Voice over IP to send voice bearer traffic and can also carry CAS traffic using Named Signaling Events (see NSE)

S

Stand Alone Synchronization Equipment

Service Configuration Manager

Service Control Point

Service Data Function

Synchronous Digital Hierarchy (approximately equivalent to SONET used in US and Japan)

Signalling Gateway

Simple Gateway Control Protocol

Session Initiation Protocol

Service Level Agreement

Service Location Register

Signalling Link Terminal

single mode fibre intermediate range

Short Message Service

Service Node

Simple Network Management Protocol

Synchronous Optical NETwork

Simple Resource Control Protocol

Send Routing Information

Service Resource Module

Enhanced Service Resource Module

Signalling System 7

Service Switching Point

Synchronous Transport Module, level 1 (2,016 DS0s, 155.52 Mb data rate—equivalent to OC-3 used in U.S. and Japan)

Synchronous Transport Module, level 4 (8,064 DS0s, 622.080 Mb data rate—equivalent to OC-12 used in U.S. and Japan)

Signal Transfer Point

T

Transaction Capabilities Application Part

Transmission Control Protocol

time-division multiplexing

Tag Distribution Protocol

Trivial File Transfer Protocol

Trunking Gateway

Telecommunications Managed Networks

Type of Service

Traffic and Performance Manager

Transit Switching Center

U

User Datagram Protocol

Universal Gateway Manager

V

ETSI family of interface specifications for connections between Local Exchanges and Access Networks. V5.1 is the specification for multiplex type access networks. V5.2 is the specification for concentrator type networks.

Voice Activity Detection. Also called "silence suppression"

virtual circuit (virtual channel)

virtual circuit identifier (virtual channel identifier)

Voice Interworking Service Module

Virtual LAN (local area network)

Voice over IP

virtual path

virtual path identifier

Virtual Private Network

Voice Processing System

Virtual Termination Call Handler (component of the iMSS Call Agent)

Virtual Transit Network

W

wide-area network