Glossary of terms

3G - 3rd Generation Mobile Network
3GPP - 3rd Generation Partnership Project

A

ACL - Access Control List
ACM - Automatic Channel Mapping
ADMF - Administration Function (Lawful Intercept component)
ADPCM - Adaptive Differential Pulse Code Modulation (codec)
ADSL - Asymmetrical Digital Subscriber Line
AH - Authentication Header
ALG - Application Layer Gateway
AMR - Adaptive Multi-Rate (GSM2 codec)
AMR-WB - Adaptive Multi-Rate Wideband (3GPP codec G.722.2)
ANSI - American National Standards Institute
APE - Applications Processor Engine
API - Application Programming Interface
APIPA - Automatic Private IP Addressing
A-RACF - Access Resource Admission Control Function
ARP - Address Resolution Protocol
ARPU - Average Revenue Per User
ATM - Asynchronous Transfer Mode
AUC - Authentication Centre

B

B2BUA - Back to Back User Agent
BGCF - Breakout Gateway Control Function
B-RAS - Broadband Remote Access Server
BS - Base Station
BTS - Base Transceiver Station

C

CA - Call Agent
CAC - Call Admission Control
CALEA The Commission on Accreditation for Law Enforcement Agencies
CAMEL - Customized Applications for Mobile networks Enhanced Logic
CAPEX - Capital Expenditure
C-BGF - Access/Core Border Gateway Function
CC- Contents of Communication (Deliverable product of a Lawful Intercept system)
CCB - Customer Care and Billing
CDR - Charge Detail Records
CELP - Code Excited Linear Predictive (codec)
CFR - Code of Federal Regulations
CLEC - Competitive LEC
CLI - Command Line Interface
CPE - Customer Premise Equipment
CPLD - Complex Programmable Logic Device
CPS - Calls Per Second
CSA Canadian Standards Association
CSCF - Call Session Control Function
CS-CELP Conjugate-Structure CELP
CSIX Common Switch Interface

D

DCE - Data Connecting Equipment
DDoS - Distributed Denial of Service (attack)
DHCP - Dynamic Host Configuration Protocol
DiffServ - Differentiated Services
DMZ - Demilitarized Zone
DNAT - Dynamic Network Address Translation
DNS - Domain Name System
DoS - Denial of Service (attack)
DSCP - Differentiated Services Code Point
DSL - Digital Subscriber Line
DSLAM - Digital Subscriber Line Access Multiplexer
DTE - Data Terminal Equipment

E

ECH - Emergency Call Handling
ECRIT - Emergency Context Resolution with Internet Technologies
EDGE - Enhanced Data Rates for GSM Evolution
EEC - European Economic Community
EMC - Electro-Magnetic Compatibility
EMS - Element Management System
EN - European standards
ESP - Encapsulating Security Protocol
ETSI - European Telecommunications Standards Institute

F

FCC - Federal Communications Commission
FMC - Fixed Mobile Convergence
FPGA - Field Programmable Gate Array
FQDN - Fully-Qualified Domain Name
FRU - Field Replaceable Unit
FTP - File Transfer Protocol

G

GERAN - GSM/EDGE Radio Access Network
GGSN - Gateway GPRS Support Node
GigE - Gigabit Ethernet
GPRS - General Packet Radio System
GSM - Global System for Mobile
GSTN - Global Switched Telephony Network
GUI - Graphical User Interface

H

H.323 - A videoconferencing standard defined by the ITU it is also considered a standard for VoIP
HI - Handover Interface (Standardised Interface between a Public Network and a Law Enforcement Network)
HLR - Home Location Register
HSS - Home Subscriber Server
HTML - Hypertext Markup Language
HTTP - Hypertext Transfer Protocol

I

IAD - Integrated Access Device
IAP - Intercept Access Point
IANA - Internet Assigned Numbers Authority
IBCF - Interconnect Border Control Function
IBCF - Interconnect Border Control Fuction
I-BGF - Interconnection Border Gateway Function
ICE - Interactive Connectivity Establishment
ICES - Interference Causing Equipment Standard
ICMP - Internet Control Message Protocol
I-CSCF - Interrogating-Call Session Control Function
IEC - International Engineering Consortium
IEE - Institution of Electrical Engineers
IETF - Internet Engineering Task Force
IIF - Internal Intercept Function (Lawful Intercept component)
IKE - Internet Key Exchange
ILEC - Incumbent LEC
IM - Instant Messaging
IMS - Instant Messaging Service
IMS - IP Multimedia Subsystem (Part of 3G system)
IMSI - Internation Mobile Station Identity
INI - Internal Networks Interface (Interface between LI components)
IP - Internet Protocol
IPv4 - Predominant Version of IP in networks today
IPv6 - Next generation of IP
IPsec - IP Security Protocol
IPsec-AH - IP Security Protocol Authentication Header
IPsec-ESP - IP Security Protocol Encapsulating Security Protocol
IRI - Intercept Related Information (LI Deliverable)
ISAKMP - Internet Security Association and Key Management Protocol
ISDN - Integrated Service Digital Network
ISP - Internet Service Provider
ITU - International Telecommunication Union

L

LAG - Link Aggregation Group
LAN - Local Area Network
LCD - Liquid Crystal Display
LEA - Law Enforcement Agency
LEC - Local Exchange Carrier
LEMF - Law Enforcement Monitoring Facility
LD-CELP Low Delay CELP (codec)
LI - Lawful Intercept
LIC - Line Interface Card

M

Megaco - MEdia GAteway COntrol
MExE - Mobile station application Execution Environment
MF - Mediation Function (Component of LI system)
MGCF - Media Gateway Control Function
MGCP - Media Gateway Control Protocol
MIDCOM - Middlebox Communication
MoIP - Multimedia over IP
MOU - Minutes Of Use
MPLS - Multi Protocol Label Switching
MOS - Mean Opinion Score
MP-MLQ - Multi-Pulse Maximum Likelihood Quantization (codec)
MS - Mobile Stations (typically Mobile phone)
MVNO - Mobile Virtual Network Operator

N

NAPT - Network Address and Port Translation
NAT - Network Address Translation
NAT-PT - Network Address Translation - Protocol Translation
NEBS - Network Equipment-Building System
NGI - Next Generation Internet
NRTL - Nationally Recognized Testing Laboratories
NTP - Network Time Protocol

O

OAM - Operations, Administration & Maintenance
OEM - Original Equipment Manufacturer
OSPF - Open Shortest Path First - a router protocol used within larger autonomous system networks
OSS - Operational Support System

P

PABX - Private Automatic Branch Exchange
PBX - Private Branch Exchange (used interchangably with PABX)
PC - Personal Computer
PCF - Policy Control Function
PCI - Peripheral Component Interconnect
PCM - Pulse Code Modulation (codec)
PDF - Policy Decision Function
P-CSCF - Proxy-Call Session Control Function
PDA - Personal Digital Assistant
PDP - Packet Data Protocol
PDU - Power Distribution Unit
POP - Point Of Presence
POST - Power On Self Test
POTS - Plain Old Telephony Service
PSEP - Public Safety and Emergency Preparedness (Canada)
PSTN - Public Switched Telephone Network
PTN - Public Telecom Network

Q

QoS - Quality of Service

R

RAM - Random Access Memory
RAS - Remote Access Server
RCEF - Resource Control Enforcement Function
RFC - Request For Comment
RISC - Reduced Instruction Set Computer
RTCP - Real-time Transport Control Protocol
RTP - Real-time Transport Protocol

S

SAC - Session Admission Control
SB-ADPCM - Sub-Band ADPCM
S-CSCF - Serving-Call Session Control Function
SCTP - Stream Control Transmission Protocol
SCSI - Small Computer System Interface
SDP Session Description Protocol
SDSL - Symmetric Digital Subscriber Line
SEG - Security Gateway
SELV - Safe Extra Low Voltage
SGSN - Serving GPRS Support Node
SIGTRAN - Signalling Transport
SIP - Session Initiation Protocol
SIP-T - Session Initiation Protocol for Telephony
SLA - Service Level Agreement
SMS - Short Message Service
SNMP - Simple Network Management Protocol
SPDF - Service-based Policy Decision Function
SS7 - Signalling System 7
STUN - Simple Traversal of UDP Through Network Address Translators

T

TCP - Transmission Control Protocol
TDM - Time-Division Multiplexing
TIPHON - Telecommunications and Internet Protocol Harmonization over Networks
TISPAN - Telecoms & Internet converged Services & Protocols for Advanced Networks
TLS - Transport Layer Security
ToS - Type of Service
THIG - Topology Hiding Inter-network Gateway
TURN - Traversal Using Relay NAT

U

UA - User Agent
UAC - User Agent Client
UAS - User Agent Server
UDP - User Datagram Protocol
UE - User Equipment
UE - User Element
UL - Underwriters Laboratory
UMTS - Universal Mobile Telecommunications Service
UPnP - Universal Plug and Play
USAT - USIM Application Toolkit
USIM - Universal Subscriber Information Module
UTRAN - UMTS Terrestrial Radio Access Network
URI - Uniform Resource Identifier
URL - Uniform Resource Locator

V

VAD - Voice Activity Detection
VAS - Value Added Services
VBR - Variable Bit Rate
VC - Virtual Circuit
VCI - Virtual Channel Identifier
VHDL - Very High Speed Integrated Circuits Hardware Description Language
VLAN - Virtual Local Area Network
VoIP - Voice over IP
VPLS - Virtual Private LAN service
VPN - Virtual Private Network

W

WAN - Wide Area Network
WAP - Wireless Application Protocol
WiMAX - Worldwide Interoperability for Microwave Access
WML - Wireless Markup Language

X

xDSL - x Digital Subscriber Line, e.g. ADSL