Keyword |
Description |
(57 to 66 GHz)
|
-
|
2-WIRE
|
-
|
3,1 KHZ
|
3,1 kHz audio
|
3D Ray-Tracing
|
-
|
3DTV
|
|
3G
|
Third Generation
|
3GPP
|
Third Generation Partnership Project
|
3GPP Access
|
-
|
3GPP2
|
Third Generation Partnership Project 2
|
3PTY
|
Three party (supplementary service)
|
464XLAT
|
-
|
4G
|
-
|
4-WIRE
|
-
|
5G
|
Cellular technology beyond LTE, IMT-2020 conformant
|
5GMS
|
-
|
60 GHz
|
-
|
6G
|
Cellular technology beyond 5G, IMT-2030 conformant
|
6rd
|
-
|
6TiSCH
|
-
|
7 KHZ
|
7 kHz audio
|
AAL
|
ATM Adaptation Layer
|
AAS
|
Active Antenna Systems
|
Abstracted Network Information
|
-
|
Acceleration
|
-
|
ACCESS
|
-
|
access control
|
-
|
Access Profile
|
-
|
accessibility
|
can be accessed by users with disabilities
|
accountability
|
|
ACOUSTIC
|
cf. coupling, etc
|
acronym
|
-
|
ACT
|
Asynchronous Contact Tracing
|
ADAPTION
|
Adaption (adaptation), terminal, rate, etc
|
ADDRESSING
|
Addressing, numbering, routeing
|
ADMINISTRATION
|
-
|
ADSL
|
Asymetrical Digital Subscriber Line
|
ADSL2
|
|
ADSL2plus
|
|
Advertisement
|
-
|
AERONAUTICAL
|
cf. terrestrial, maritime, satellite, etc.
|
AFA
|
Autonomous Frequency Assignment
|
AFTR
|
-
|
Age verification
|
|
AGEING
|
cf. Human Factors
|
Agriculture
|
-
|
AIP
|
Additional Information Presentation (supplementary service)
|
air flow
|
|
AIR INTERFACE
|
Air Interface for radiocommunications
|
Air Traffic Management
|
Air Traffic Management
|
ALARM
|
-
|
ALGORITHM
|
(security, encryption, ...)
|
AM
|
Amplitude Modulation
|
AMATEUR
|
Commercially available amateur radio equipment
|
AMBIENCE
|
Ambience listening (supplementary service)
|
AMPLIFICATION
|
-
|
AMSS
|
Aeronautical Mobile Satellite Service
|
AN
|
Access Network
|
ANALOGUE
|
-
|
Analysis
|
-
|
ANF
|
Additional Network Feature
|
anonymity
|
-
|
Anonymous Communication Reject
|
ACR
|
ANTENNA
|
Antenna, aerial
|
AOC
|
Advice of Charge
|
AP
|
Access Priority (supplementary service)
|
API
|
Application Programme Interface
|
APM
|
Application Transport Mechanism (SS7)
|
Application
|
-
|
application layer
|
|
application profile
|
|
AR Cloud
|
-
|
ARCHITECTURE
|
inc. reference models, etc
|
ARCU model
|
-
|
AREA SELECT
|
Area selection (supplementary service)
|
artificial intelligence
|
-
|
ASCI
|
Advanced Speech Call Items
|
ASiC
|
Associated Signature Containers
|
ASN.1
|
Abstract Syntax Number one
|
assessment
|
-
|
Assistive Listening
|
-
|
assurance
|
-
|
ATM
|
Asynchronous Transfer Mode
|
ATS
|
Abstract Test Suite
|
ATS_GR FILE
|
Seperate ATS graphical file exists
|
ATS_MP FILE
|
Seperate ATS mp file exists
|
Attribute Attestation
|
-
|
Audience
|
-
|
AUDIO
|
-
|
audio frequency induction loop
|
-
|
audio-PMSE
|
|
AUDIOTEX
|
-
|
Augmented Reality
|
-
|
AUTH
|
Call authorised by dispatcher (supplementary service)
|
authentication
|
-
|
authorization
|
|
automation
|
-
|
Automotive
|
-
|
Autonomic Networking
|
-
|
AVAILABILITY
|
QoS characteristic
|
AVI
|
AudioVisual Information
|
award criteria
|
|
B2B
|
Business to business
|
B2C
|
Business to customer
|
B4
|
-
|
Back haul
|
-
|
backhaul
|
-
|
bandwidth
|
|
BASE STATION
|
cf. radio
|
BASIC
|
cf. Call, Service, Access, etc.
|
battery
|
-
|
BC
|
Bearer Capability information element (ISDN)
|
B-CHANNEL
|
Bearer channel
|
BEARER
|
cf. channel, service
|
BEM
|
Block Edge Mask
|
Benchmarking
|
Benchmarking
|
BICC
|
Bearer-independent call control
|
BIIS
|
BInary Signalling System for non-trunked PMR
|
B-ISDN
|
Broadband ISDN
|
B-ISUP
|
Broadband ISUP
|
bitcoin
|
-
|
Block Edge Mask
|
-
|
blockchain
|
|
BONDING
|
(electrical safety connection)
|
bone conduction
|
-
|
B-QSIG
|
Broadband QSIG
|
BR
|
-
|
BROADBAND
|
(inc. B-ISDN)
|
BROADCAST
|
point to multipoint message transfer - see "multipoint"
|
BROADCASTING
|
Broadcasting, TV, audio
|
BSS
|
Broadcast Satellite Services
|
BSSAP
|
BSS Application Part (GSM protocol)
|
BSV
|
-
|
building
|
-
|
BWA
|
Broadband Wireless Access
|
C REFERENCE POINT
|
C Reference point (ISDN)
|
CA
|
Conditional Access
|
CABLE
|
-
|
cables
|
-
|
CAdES
|
CMS Advanced Electronic Signature
|
Calculation
|
|
CALL BARRING
|
Call Barring (supplementary service)
|
Call Centre
|
-
|
CALM
|
Continuous Air Interface for Long and Medium distance
|
CAMEL
|
Customized applications for mobile network enhanced logic
|
CAP
|
Conformance Assessment Process
|
capacity
|
-
|
CARD
|
Intelligent Card
|
categorization
|
-
|
category
|
-
|
CB
|
Citizens Band (radio)
|
CBC
|
Cell Broadcast Centre (GSM)
|
CBDS
|
Connectionless Broadband Data Service
|
CBS
|
Cell Broadcast Service
|
CCBS
|
Completion of Call to Busy Subscriber
|
CCM
|
Container Infrastructure Service (CIS) Cluster Managem
|
CCM system
|
-
|
CCNL
|
Completion of Communications on not Logged-in
|
CCNR
|
Completion of Call on No Reply (supplementary service)
|
CCS
|
Common Channel Signalling
|
CDA
|
Call Distribution to Attendant (supplementary service)
|
CDHN
|
Convergent Digital Home Network
|
CDIV
|
Call Diversion (supplementary service)
|
CDMA
|
Code-Division Multiple Access
|
cdma2000
|
Code-Division Multiple Access 2000
|
CDN
|
Content Delivery Network
|
CELL
|
(radio)
|
cellular
|
cellular (radio)
|
CENTREX
|
-
|
Certificate
|
-
|
CF
|
Call Forwarding (supplementary service)
|
CGNAT
|
-
|
channel bandwidths
|
-
|
Channel coding
|
-
|
channel modelling
|
-
|
CHARACTER
|
Characters, symbols, graphics, pictograms
|
CHARGING
|
Charging, billing, accounting
|
Chat
|
-
|
children
|
cf. Human Factors
|
CHIRPING
|
-
|
CI Plus
|
CI Plus
|
CI/CD
|
Continuous Integration and Continuous Delivery
|
CIRCUIT MODE
|
-
|
Citizen
|
-
|
city
|
-
|
city buildings
|
-
|
CL
|
Connectionless, non-connection-oriented
|
CLAT
|
-
|
Climate change mitigation
|
Reductions in human emissions of greenhouse gases
|
CLIP
|
Calling Line Identification Presentation (supp. service)
|
CLIR
|
Calling Line Identification Restriction (supp. service)
|
closed control loop
|
-
|
closed loop control
|
-
|
CLOUD
|
-
|
Cloud computing
|
-
|
Cloud Gaming
|
-
|
cloud-native
|
|
CMTS
|
Cable Modem Termination System
|
CNAP
|
Calling Name Presentation (supplementary service)
|
CNIP
|
Calling Name Identification Presentation (supplementary ser)
|
CNIR
|
Calling Name Identification Restriction (supplementary serv)
|
CO
|
Call Offer (supplementary service)
|
CO2 emission
|
-
|
coaxial
|
-
|
cochlear implant
|
|
CODEC
|
COder/DECoder
|
CODING
|
-
|
coexistence
|
|
Cognition
|
-
|
cognitive
|
-
|
COLP
|
COnnected Line identification Presentation (supp. service)
|
COLR
|
COnnected Line identification Restriction (supp. service)
|
Commerce
|
-
|
Communications module
|
-
|
companion screen
|
-
|
CONF
|
Conference (supplementary service)
|
CONFIDENTIALITY
|
(security)
|
CONFIGURATION
|
-
|
conflict detection
|
-
|
CONFORMANCE
|
Conformance of an equipment to a standard
|
conformity
|
-
|
CONNECTION-ORIENTED
|
CONNECTION ORIENTED
|
CONNECTOR
|
-
|
CONP
|
Connected Name Identification Presentation (supp. service)
|
Container
|
-
|
Content
|
-
|
Content Delivery Network
|
-
|
Context capturing and analysis
|
|
CONTRIBUTION
|
(to TV distribution network)
|
CONTROL
|
-
|
Control Interface
|
-
|
Conversation
|
-
|
cooling capacity
|
|
coordination
|
-
|
COP
|
Code Of Practice
|
Core Network
|
-
|
cost impact
|
-
|
Countermeasures
|
-
|
COUPLING
|
(electric, magnetic, acoustic)
|
Covid
|
-
|
CPE
|
Customer Premise Equipment
|
C-PMSE
|
Cognitive Programme Making Special Events
|
CR
|
Call Restriction (supplementary service)
|
CRA
|
-
|
Critical Infrastructure
|
-
|
CROSS CONNECT
|
-
|
CROSSTALK
|
(in transmission cables, ...)
|
CRS
|
Cognitive Radio System
|
CS1
|
Capability Set 1
|
CS2
|
Capability Set 2 (IN)
|
CS3
|
Capability Set 3 (IN)
|
CS4
|
Capability Set 4 (IN)
|
CSFB
|
-
|
CSMA
|
Carrier Sense Multiple Access
|
CST
|
Call Setup Time
|
CSTA
|
Computer-supported telephony applications
|
CT
|
Cordless Telephone
|
CT2
|
Cordless Telephone - 2nd generation
|
CTAN
|
Cordless terminal authentication - terminal (supp. svce.)
|
CTAT
|
Cordless terminal authentication - network (supp. svce.)
|
CTE
|
Circuit-Terminating Equipment
|
CTM
|
Cordless Terminal Mobility
|
CTS
|
Conformance Test Services
|
CTSD
|
|
CUG
|
Closed User Group (supplementary service)
|
Customer Premises Networks
|
|
CVG
|
Convergence (layer)
|
CW
|
Call Waiting (supplementary service)
|
Cyber
|
-
|
Cyber Security
|
-
|
Cyber-defence
|
-
|
Cybersecurity
|
-
|
D2-MAC
|
TV (see MAC)
|
DAA
|
Detect-And-Avoid
|
DAB
|
Digital Audio Broadcasting
|
DAM
|
DECT Authentication Module
|
DASH
|
-
|
DATA
|
-
|
data base
|
-
|
Data Centres
|
-
|
data collection
|
-
|
data interoperability
|
data interoperability
|
data management
|
-
|
data mechanism
|
-
|
data models
|
-
|
data preservation
|
-
|
data processing
|
-
|
data sharing
|
-
|
data storage
|
-
|
data usability
|
ability of a user to derive useful information from data
|
D-band
|
-
|
DCE
|
Data Circuit terminating Equipment
|
D-CHANNEL
|
ISDN signalling channel
|
DCS
|
(extension of GSM)
|
DDI
|
Direct Dialling In (supplementary service)
|
Decentralized Identifier
|
DID
|
DECT
|
Digital Enhanced Cordless Telecommunications
|
DECT-2020
|
-
|
definitions
|
-
|
de-jitter buffer
|
|
delay
|
|
deployement trial
|
-
|
deployment scenarios
|
-
|
design
|
-
|
Design for All
|
cf. Human Factors
|
device
|
-
|
device complexity
|
-
|
DevOps
|
Development and Operat
|
DFRS
|
Digital Fixed Radio Systems
|
Diameter
|
|
dictionary
|
|
DIGITAL
|
-
|
digital certificate
|
-
|
Digital Clone
|
-
|
digital identity
|
digital identity
|
Digital Right Management
|
-
|
digital signature
|
|
Digital Twins
|
-
|
digitalized
|
-
|
DIRECTORY
|
-
|
DISABILITY
|
cf. Human Factors
|
DISCRETE
|
Discrete listening (supplementary service)
|
DISKETTE
|
Diskette associated with this item
|
Distortion
|
-
|
distributed
|
-
|
distributed filters
|
|
Distributed Ledger
|
-
|
distribution
|
-
|
Diversity
|
cf. Human Factors
|
DLC
|
Data Link Control
|
DMAP
|
DECT Multimedia Access Profile
|
DMO
|
Direct mode operation (TETRA)
|
DND
|
Do Not Disturb (supplementary service)
|
DNS
|
Domain name system
|
DOCSIS
|
Data Over Cable Service Interface Specification
|
Double talk
|
-
|
dPMR
|
digital Private Mobile Radio
|
DPP
|
Digital Product Passport
|
DPRS
|
DECT Packet Radio Service
|
DQDB
|
Distributed Queue, Double Bus
|
DRM
|
Digital Radio Mondiale
|
DROES
|
Data Receive Only Earth Stations (satellite)
|
DRRS
|
Digital Radio Relay System
|
DRX
|
Discontinuous (radio) reception
|
DSB
|
Double Side Band
|
DSC
|
Digital Selective Calling
|
DSLAM
|
Digital Subscriber Line Access Multiplexer
|
DS-Lite
|
-
|
DSRC
|
Dedicated Short Range Communications
|
DSRR
|
Digital Short Range Radio
|
DSS1
|
Digital Subscriber Signalling no. 1 (ISDN)
|
DSS2
|
Digital Subscriber Signalling no. 2 (B-ISDN)
|
DTE
|
Data Terminal Equipment
|
DTH
|
Direct to the home (satellite broadcasting)
|
DTM
|
Dynamic synchronous transfer mode (transmission / switching)
|
DTMF
|
Dual Tone Multi-Frequency (in-band signalling)
|
DTX
|
Discontinuous (radio) transmission
|
DVB
|
Digital Video Broadcasting
|
DVB-H
|
Digital Video Broadcasting Handheld
|
DVB-I
|
-
|
DVB-SH
|
|
dynamic spectrum sharing
|
-
|
Dynamic Triggering
|
-
|
EAA
|
Electronic Attestation of Attributes
|
Earphones
|
-
|
EARTH STATION
|
(satellite)
|
EARTHING
|
-
|
Ear-Worn Devices
|
-
|
E-band
|
-
|
ecall
|
Manual/automatic initiated emerg. call (TS12) from vehicle
|
ECHO
|
-
|
e-commerce
|
electronic commerce
|
Ecosystem
|
-
|
ECT
|
Explicit Call Transfer (supplementary service)
|
e-delivery services
|
-
|
EDGE
|
Enhanced Data Rates for GSM Evolution
|
EEER
|
Equipment Energy Efficiency Ratio
|
eHealth
|
|
EHF
|
Extremely High Frequency (30 GHz to 300 GHz)
|
E-INTERFACE
|
(GSM)
|
ELECTRIC
|
-
|
electronic preservation
|
-
|
electronic registered delivery
|
-
|
ELECTRONIC SIGNATURE
|
-
|
EMAIL
|
EMAIL
|
embedded
|
|
EMC
|
Electro-Magnetic Compatibility
|
EMERGENCY
|
Including maritime/terrestrial search & rescue
|
emergency communications
|
|
emergency services
|
-
|
EMF
|
electromagnetic field (cf safety)
|
EMISSION
|
Of unwanted signals, radiated/conducted (EMC)
|
eMLPP
|
enhanced Multi-Level Precedence and Pre-emption service
|
e-mobility
|
-
|
E-Model
|
(speech quality)
|
encryption
|
|
ENDORSEMENT
|
Endorsement of a Standard/Recommendation from another body
|
End-user
|
-
|
energy consumption
|
-
|
Energy Efficiency
|
-
|
Energy Management
|
-
|
enforcement
|
|
ENG
|
Electronic News Gathering (satellite)
|
Enhanced Mobile Broadband
|
-
|
enum
|
mapping E.164 numbers to URI (universal resource identifier)
|
ENv
|
ETSI deliverable - as a basis for CEN/CENELEC ENv
|
ENVIRONMENT
|
-
|
Environmental impact
|
-
|
environmental information
|
-
|
EPC
|
Evolved Packet Core
|
EPG
|
Electronic Programme Guide
|
EPIRB
|
Emergency Position Indicating Radio Beacons
|
EQUIPMENT PRACTICE
|
-
|
ERDS
|
Electronic Registered Delivery Service
|
ER-GSM
|
|
ERMES
|
European Radio MEssaging System
|
ERROR HANDLING
|
-
|
ERS
|
-
|
eSSP
|
embedded Smart Secure Platform
|
ESV
|
Earth Station on board Vessel
|
ethernet
|
-
|
ethics
|
-
|
EU qualified
|
-
|
EUDI Wallet
|
EU Digital Identity Wallet
|
E-UTRA
|
Enhanced-UMTS Terrestrial Radio Access
|
EV
|
Electric Vehicle
|
Evaluation
|
-
|
EVOLUTION
|
-
|
eWarrant
|
-
|
e-waste management
|
-
|
Exposure
|
-
|
extended validation certificat
|
extended validation certificate
|
F5G
|
-
|
F5G Advanced
|
-
|
FACILITY
|
-
|
FAX
|
Facsimile
|
FDD
|
Frequency Division Duplexing
|
FDMA
|
Frequency Division Multiple Access
|
FEATURE KEY
|
(ISDN generic protocol)
|
FEC
|
Forward Error Correction
|
FIBRE
|
(optical)
|
Field trial
|
-
|
filtering
|
|
Fixed networks
|
-
|
flexible deployment
|
-
|
Flexilink
|
-
|
FM
|
Frequency Modulation
|
FMBS
|
Frame Mode Bearer Service
|
FOLLOW ME
|
Follow me supplementary service
|
Food
|
-
|
FPH
|
Free-Phone (supplementary service)
|
FPLMTS
|
Future Public Land Mobile Telecommunications System
|
FRAME MODE
|
-
|
FRAME RELAY
|
-
|
Framework
|
-
|
frequency range
|
-
|
FRMCS
|
Future Rail Mobile Communication System
|
Front haul
|
-
|
fronthaul
|
-
|
FS
|
Fixed Services
|
FSS
|
Fixed Satellite Services
|
FT
|
File Transfer
|
FTS
|
Fixed Terminal Subsystem
|
FTTR
|
Fibre To The Room
|
Full-Band
|
-
|
FUNCTIONAL
|
(ISDN generic protocol)
|
functional architecture
|
-
|
functional block
|
-
|
future releases
|
|
FWA
|
Fixed Wireless Access (cf RLL, WLL, FRA)
|
FWS
|
Fixed Wireless Systems
|
GAP
|
Generic Access Profile (DECT)
|
gap analysis
|
|
GATEKEEPER
|
-
|
GATEWAY
|
-
|
GEM
|
-
|
GEM 1.3
|
-
|
GenAI
|
Generative AI
|
gender-balanced design
|
-
|
GENERIC
|
-
|
GFT
|
Graphical presentation Format (TTCN-3)
|
GLDB
|
Geo Location DataBase
|
GMDSS
|
Global Maritime Distress and Safety System
|
GMPRS
|
GEO (Geostationary Earth Orbit) Mobile Packet Radio Service
|
GMR
|
GEO (Geostationary Earth Orbit) Mobile Radio
|
GMR-1
|
GEO (Geostationary Earth Orbit) Mobile Radio - family 1
|
GMR-2
|
GEO (Geostationary Earth Orbit) Mobile Radio - family 2
|
GNSS
|
Global Navigation Satellite System
|
GPRS
|
General Packet Radio Service
|
graphical notation
|
-
|
green-house gas emission
|
-
|
GRIDS
|
GeneRic ID Services
|
GROUP 3
|
(facsimile)
|
GROUP 4
|
(facsimile)
|
group call
|
|
GROUP NUMBER
|
Dynamic Grp No Assignement (supplementary service)
|
GSM
|
Global System for Mobile communications
|
GSM_PHASE1
|
GSM Phase 1
|
GSM_PHASE2
|
GSM Phase 2
|
GSM_PHASE2_PLUS
|
GSM Phase 2+
|
GSM-R
|
GSM for Railways
|
GSO
|
Geostationary Satellite Orbit
|
GTP
|
GPRS Tunnelling Protocol
|
GTPv2-C
|
GPRS Tunnelling Protocol Version 2 - Control Plane
|
H.248
|
ITU-T recommendation
|
H.323
|
ITU-T recommendation
|
H.F.
|
High Frequency (3 MHz to 30 MHz)
|
HANDBOOK
|
-
|
handheld microphone
|
-
|
HANDOVER
|
(between cells, between networks)
|
handset
|
-
|
HANDSFREE
|
(voice terminal operation)
|
HAPS
|
High Altitude Platform Station
|
Harmonised standard
|
-
|
HDMAC
|
High Definition MAC
|
HDR
|
High Dynamic Range
|
HDR Composer
|
-
|
HDR Metadata Embedder
|
-
|
HDSL
|
High bit rate Digital Subscriber Line
|
HDTV
|
High Definition TV
|
Headphones
|
-
|
headset
|
-
|
HEALTH
|
Long term health aspects under RTTE directive. See SAFETY.
|
HEARING AID
|
-
|
Hearing Impairment
|
-
|
Hearing Loop System
|
-
|
HEO
|
Highly-inclined Elliptical Orbit (satellite)
|
HF
|
Human Factors
|
HFC
|
Hybrid Fibre Coaxial
|
hidden node
|
cf. Powerline
|
HIPERACCESS
|
high speed fixed radio access to customer premises
|
HIPERLAN
|
HIgh PErformance Radio Local Area Networks (LAN)
|
HIPERMAN
|
High performance radio metropolitain area networks
|
HLC
|
High Layer Capability information element (ISDN)
|
HOLD
|
(service)
|
Home Gateway
|
-
|
HomePlug AV
|
-
|
HTML
|
HyperText Mark-up Language
|
human voice communication
|
-
|
HYBRID
|
Mixed analogue/digital; or fibre/copper medium
|
Hybrid Cabling System
|
-
|
IBCF
|
Interconnection Border Control Function
|
ICO
|
Intermediate Circular Orbit
|
ICONS
|
cf. Human Factors
|
ICS
|
Implementation Conformance Statement
|
ICT
|
Information and Communications Technology
|
ICT site hosting
|
-
|
ICT sites
|
-
|
ID
|
Identification, Identity
|
identification
|
identification
|
Identity
|
-
|
Identity proofing
|
-
|
IDL
|
Interface Description Language
|
IE
|
Information Element (ISDN signalling)
|
IEM
|
In-Ear Monitor
|
IFDN
|
Indoor Fibre Distribution Network
|
IIoT
|
Industrial Internet of Thing
|
IM
|
Intent Management
|
IM service interface
|
|
IMB
|
-
|
IMEI
|
International MS Equipment Identity (GSM)
|
IMMUNITY
|
... to radiated/conducted interference (EMC)
|
impairment
|
-
|
Implant
|
-
|
IMS
|
IP Multimedia System
|
IMT
|
International Mobile Telecommunications
|
IMT-2000
|
International Mobile Telecommunications 2000 (ITU project)
|
IMT-2020
|
-
|
IMT-Advanced
|
IMT-Advanced
|
IN
|
Intelligent Network
|
INAP
|
IN Application Protocol
|
INBAND
|
In band (signalling)
|
INCLUDE
|
Include Call (supplementary service)
|
inclusive design
|
-
|
incumbent
|
-
|
inductive
|
-
|
Industrial
|
-
|
Industry
|
-
|
Information assurance
|
-
|
INFORMATION MODEL
|
Information model (see X.720)
|
information preservation
|
|
instrumental
|
|
INT
|
call INTrusion (supplementary service)
|
Intelligence-defined Network
|
-
|
intelligent homes & buildings
|
-
|
intelligent mobility
|
-
|
intelligent transportation
|
-
|
Intelligibility
|
-
|
intent management
|
-
|
INTERACTION
|
(between services)
|
Interception
|
-
|
interconnection
|
-
|
INTERFACE
|
-
|
Interference Analysis
|
-
|
INTERNET
|
-
|
INTEROPERABILITY
|
between equipment from different suppliers
|
inter-system
|
-
|
INTERWORKING
|
(between networks, between equipment in general)
|
intra-system
|
-
|
ION
|
Identity Oriented Networks
|
IoT
|
Internet of Things
|
IoT platforms
|
|
IP
|
Internet Protocol
|
IP address
|
-
|
IP Address Resolution
|
-
|
IP Retention
|
-
|
IPCable
|
IP services in cable TV networks
|
IP-Network
|
-
|
IPR
|
Intellectual Property Right
|
IPTV
|
Internet Protocol TeleVision
|
IPv4
|
-
|
IPv6
|
Internet Protocol version 6
|
ISAC
|
Integrated Sensing And Communications
|
ISDN
|
Integrated Services Digital Network
|
ISM
|
Industrial, Scientific and Medical radio band (433 MHz)
|
Isolation
|
-
|
ISPBX
|
Integrated Services Private Branch Exchange
|
iSSP
|
integrated SSP
|
IST
|
Immediate Service Termination
|
ISUP
|
ISDN User Part (of SS7)
|
ITS
|
Intelligent Transport Systems
|
IXIT
|
Implementation, eXtra Information for Testing
|
jitter buffer
|
|
JSON
|
-
|
KEY ESCROW
|
(security)
|
Key Exchange
|
-
|
KEYPAD
|
(generic ISDN protocol)
|
keyword
|
-
|
Knowledge Graph
|
|
knowledge management
|
-
|
Knowledge-based Reasoning
|
|
KPI
|
KPI Performance Indicator
|
L2VPN
|
-
|
LAN
|
Local Area Network
|
Language
|
-
|
LAPB
|
Link Access Protocol, Balanced (packet signalling)
|
LAPD
|
Link Access Protocol, D-channel (ISDN)
|
large antenna array
|
-
|
LASER
|
-
|
LATE ENTRY
|
Late entry (supplementary service)
|
Lawful Disclosure
|
-
|
Lawful Interception
|
Lawful Interception
|
LAYER 1
|
(of OSI 7-layer model)
|
LAYER 2
|
(of OSI 7-layer model)
|
LAYER 3
|
(of OSI 7-layer model)
|
LAYER 4
|
(of OSI 7-layer model)
|
LAYER 6
|
(of OSI 7-layer model)
|
LAYER 7
|
(of OSI 7-layer model)
|
LBRDC
|
Low Bit Rate Data Communications
|
LC
|
LSA Controller
|
LC3plus
|
Low Complexity Communication Codec plus
|
LCA
|
Life Cycle Assessment
|
LE
|
Local Exchange
|
LEASED LINE
|
-
|
ledger
|
|
LEO
|
Low Earth Orbiting Satellite
|
levels
|
-
|
LF
|
Low Frequency (30 kHz to 300 kHz)
|
LH
|
Line Hunting (supplementary service)
|
License schemes
|
-
|
Lightweight Certificate Policy
|
-
|
LIST
|
List search call (supplementary service)
|
Listen Before Talk
|
-
|
listening effort
|
-
|
listening quality
|
-
|
LLC
|
Low Layer Compatibility information element (ISDN)
|
LLM
|
Large Laguage Model
|
LMES
|
Land Mobile Earth Station (satellite)
|
LMSS
|
Land Mobile Satellite Services
|
LNB
|
Low Noise Block
|
local
|
-
|
LOCAL LOOP
|
(copper, fibre, radio, ...)
|
localisation
|
|
LOCATION
|
Location
|
location information
|
|
LOUDNESS
|
(rating)
|
LOUDSPEAKING
|
(voice terminal)
|
low power
|
-
|
LOWER LAYER
|
(of OSI 7-layer model)
|
LR
|
LSA Repository
|
LSA
|
Licensed Shared Access
|
LSA spectrum resource
|
|
LSE
|
Logical Secure Element
|
LSI
|
Logical Secure element Interface
|
LSN
|
Large Scale NAT
|
LTE
|
(LTE: 3GPP technology beyond UMTS/HSPA+)
|
LTE-Advanced
|
LTE-Advanced
|
LTN
|
Low Throughput Networks
|
M2CNP
|
-
|
M2M
|
Machine to Machine (Communication)
|
M2PA
|
Message Transfer Part 2 User Peer-to-Peer Adaptation Layer
|
M2UA
|
MTP2 user adaptation
|
M3UA
|
MTP3 user adaptation
|
MABR
|
-
|
MAC
|
Multiplex Analogue Components or Medium Access Control
|
MAGNETIC
|
(coupling)
|
MAINTENANCE
|
Maintenance
|
MAN
|
Metropolitan Area Network
|
MAN-Advanced
|
MAN-Advanced
|
MANAGEMENT
|
Management
|
Management Plane
|
-
|
Mandates
|
-
|
MANO
|
Management and Orchestration
|
Manufacturing
|
-
|
MAP
|
Mobile Access Protocol
|
mapping system
|
-
|
MARITIME
|
(Cf terrestrial, satellite, aeronautical)
|
market placement
|
-
|
Match percentage
|
|
maturity assessment
|
-
|
MBSFN
|
-
|
MBT
|
Model Based Testing
|
MCBTS
|
Multi Carrier Base Tranceiver Station
|
MCID
|
Malicious Call Identification (supplementary service)
|
MCOBA
|
|
M-Commerce
|
Mobile Commerce
|
MDAF
|
Management Data Analytics Function
|
Measurement
|
-
|
MEASUREMENT UNCERTAINTY
|
measurement uncertainties
|
MEC
|
Multi-Access Edge Computing
|
MEGACO
|
Media Gateway Controller
|
MEO
|
Medium Earth Orbit (satellite)
|
MES
|
Mobile Earth Station (satellite)
|
META-PROTOCOL
|
-
|
METASIGNALLING
|
-
|
metaverse
|
-
|
METHODOLOGY
|
-
|
metrics
|
|
MF
|
Medium Frequency (300 kHz to 3 MHz)
|
MFCN
|
Mobile/Fixed Communication Network
|
MFF
|
Machine to machine Form Factor
|
MGC
|
Media Gateway Controller
|
MHEG
|
Multimedia/Hypermedia Experts Group
|
MHI
|
Message Handler Interface
|
MHP
|
-
|
MHS
|
Message Handling System
|
MICROCOMPUTER
|
-
|
microwave
|
-
|
midhaul
|
-
|
MIGRATION
|
-
|
Millimetre wave
|
-
|
MIMO
|
Multiple Input Multiple Output
|
mission critical applications
|
-
|
mission critical communication
|
-
|
ML watermarking
|
Machine Learning watermarking
|
MMC
|
Meet Me Conference (supplementary service)
|
MME
|
Mobility Management Entity
|
MMI
|
Man-Machine Interface, human factors
|
MMS
|
Multimedia Messaging Service
|
MMSS
|
Maritime Mobile Satellite Service
|
MO
|
Managed Object
|
MOBILE
|
(telecommunications in general)
|
MOBILITY
|
(concept of)
|
mobility support
|
-
|
MOCS
|
Managed Object Conformance Statement
|
Model
|
-
|
model-driven engineering
|
-
|
modelling
|
|
MODEM
|
MOdulator/DEModulator
|
MODULATION
|
-
|
Module
|
|
MONOMODE
|
Optical fibre; terminal equipment
|
MOS
|
Mean Opinion Score
|
MPA
|
Multi-PTN Attendant (supplementary service)
|
MPEG
|
Motion Picture Experts Group
|
MPLS
|
Multi Protocol Label Switching
|
MPTY
|
Multiparty (supplementary service)
|
MPX
|
Multiplex(er)
|
MRVT
|
MTP Routeing verification test
|
MS
|
Mobile (radio) Station
|
MS-Aloha
|
Mobile Slotted Aloha
|
MSAN
|
Multi-Service Access Node
|
MSAP
|
Mobile Service Access Point
|
MSC
|
Mobile system Switching Centre
|
MSN
|
Multiple Subscriber Number (supplementary service)
|
MSR
|
Multi Standard Radio
|
MSS
|
Mobile Satellite Service
|
MTA
|
Message Transfer Agent
|
MTP
|
Message Transfer Part (SS7)
|
MTP2
|
Message Transfer Part layer 2
|
MTP3
|
Message Transfer Part layer 3
|
MTS
|
Message Transfer System
|
multi service testing
|
-
|
MULTICALL
|
supplementary service; <1 cct-switched call per UE
|
MULTICHANNEL
|
Multiple 64 kbit/s channels
|
MULTIMEDIA
|
inc Hypermedia
|
MULTIMODE
|
Optical fibre; terminal equipment
|
multi-party computation
|
-
|
multi-path
|
Transmission from multiple sources to each destination
|
MULTIPOINT
|
multipoint to multipoint communication - see "broadcast"
|
multi-source
|
Transmission from multiple sources to each destination
|
MUX
|
Multiplex, multiplexing
|
MWI
|
Message Waiting Indication (supplementary service)
|
MWS
|
Multimedia Wireless Systems
|
mWT
|
millimetre wave, transmission
|
NAME
|
(generic identification supplementary services)
|
narrowband
|
-
|
NAT
|
-
|
NAT64
|
-
|
Native AI
|
|
NAVIGATION
|
cf. Human Factors
|
NAVTEX
|
Navigation telegraph
|
NBI
|
Northbound Interface
|
NCF
|
Network Control Facilities
|
NE
|
Network Element
|
NETWORK
|
-
|
network coding
|
Operation on Source Symbols that produces Coded Symbols for
|
Network KQI
|
-
|
network large mode
|
-
|
network large model
|
-
|
network management
|
-
|
Network Measurement
|
-
|
Network monitoring
|
-
|
Network Performance
|
-
|
Network scenarios
|
-
|
new functionality
|
|
Next Generation Protocol
|
-
|
NFC
|
Near Field Communication
|
NFV
|
Network Functions Virtualization
|
NFVI
|
NFV Infrastructure
|
NGAP
|
NG Application Protocol
|
NGSI-LD
|
-
|
NICAM
|
Near-instantaneous companded audio multiplex
|
NINT
|
Network Interception (supplementary service)
|
NIT
|
Network Integration Testing
|
NMDS
|
Narrowband Multi-service Delivery System
|
NNI
|
Network-Network Interface
|
NOISE
|
-
|
Noise Cancellation
|
-
|
NOMADIC
|
Nomadic Wireless Access
|
non 3GPP access
|
-
|
NON-GSO
|
Non-GeoStationary Orbit
|
Normalized Certificate Policy
|
-
|
NP
|
Number Portablilty
|
NR
|
3GPP 5G radio access technology
|
NS
|
Night Service (supplementary service)
|
NSS
|
Network Switching Subsystem
|
OAM
|
Operations And Maintenance
|
OAN
|
Optical Access Network
|
object audio
|
-
|
OBJECT IDENTIFIER
|
(ASN.1)
|
objective
|
|
ODA
|
Open Document Architecture
|
OFDM
|
Orthogonal Frequency-Division Multiplexing
|
OFDMA
|
Orthogonal Frequency-Division Multiple Access
|
Offloading
|
-
|
OIP
|
Originating Identification Presentation
|
OIR
|
Originating Identification Restriction
|
OKPI
|
Operational Key Performance Indicators
|
OLT
|
Optical Line Terminal
|
OMAP
|
Operations, Maintenance and Administration Protocol
|
ON
|
Optical Distribution Network
|
oneM2M
|
-
|
ONP
|
Open Network Provision
|
ontology
|
ontology
|
open source
|
|
Open Source Software
|
OSS
|
operational
|
-
|
OPTICAL
|
(fibre)
|
Optical Access Network
|
-
|
Optical Network Device
|
-
|
orchestration
|
|
OSA
|
Open Service Access
|
OSI
|
Open Systems Interconnection
|
OSS
|
Open Source Software
|
OSSS
|
Orthogonal Sequence Spread Spectrum
|
OTE
|
Open Testing Environment
|
OTT voice applications
|
OTT voice applications
|
OTT voice generic clients
|
OTT voice generic clients
|
OUTBAND
|
Out of band (signalling)
|
outdoor enclosure
|
|
PABX
|
Private Automatic Branch Exchange
|
PACKET MODE
|
-
|
PAD
|
Packet Assembler/Disassembler
|
PAdES
|
PDF Advanced Electronic Signature
|
PAGING
|
-
|
Pandemic
|
-
|
PAP
|
Public Access Profile
|
parallel task
|
-
|
parametrization
|
-
|
PAS
|
Publicly Available Specification
|
PAT
|
-
|
PATH
|
-
|
PATH REPLACEMENT
|
(ANF)
|
Payment
|
-
|
PAYPHONE
|
-
|
PCI
|
Programmable Communications Interface
|
PCM
|
Pulse Code Modulation
|
PCN
|
Personal Communications Network
|
PCTR
|
Protocol Conformance Testing Report
|
PDC
|
Programme Delivery Control (for domestic video/VCR)
|
PDH
|
Plesiochronous Digital Hierarchy
|
PDL
|
Permissioned Distributed Ledger
|
PDN
|
Public Data Network
|
PDO
|
Packet data optimized (TETRA)
|
PERFORMANCE
|
(inc. Quality of Service)
|
personalization
|
adaptation to personal preferences and needs
|
PES
|
PSTN/ISDN Emulation Subsystem
|
PHI
|
Packet Handler Interface
|
PHOTOGRAPHIC
|
(syntax)
|
Physical layer
|
-
|
PICS
|
Protocol Implementation Conformance Statement
|
PICTOGRAMS
|
cf. Human Factors
|
PIM
|
Physical Infrastructure Management
|
PINX
|
PTN Exchange
|
PISN
|
Private Telecommunication Network
|
PIXIT
|
Protocol Implementation, eXtra Information for Testing
|
PLANNING
|
-
|
plastic
|
-
|
PLAT
|
-
|
Platforms
|
-
|
PLCP
|
Physical Layer Convergence Procedure
|
PLMN
|
Public Land Mobile Network
|
PLUS
|
to cover for + as in Phase 2+
|
PMBS
|
Packet Mode Bearer Service
|
PMR
|
Private Mobile Radio
|
PMSE
|
Programme Making Special Events
|
POF
|
Plastic Optical Fiber
|
POINT-TO-MULTIPOINT
|
-
|
POINT-TO-POINT
|
|
policies
|
-
|
policy management
|
-
|
policy requirements
|
-
|
PON
|
Passive Optical Network
|
PORTABILITY
|
-
|
POTS
|
Plain Old Telephone Service
|
POWER
|
(radio transmission)
|
Power Measurement
|
-
|
Power over Coaxial Cable
|
-
|
POWER SUPPLY
|
-
|
powering
|
-
|
Powerline
|
-
|
pre-connectorized
|
-
|
prediction
|
|
PRIMARY
|
(rate, ISDN access)
|
PRIORITY CALL
|
Priority Call (supplementary service)
|
privacy
|
-
|
PRIVATE
|
(network)
|
PRM
|
Premium Rate service
|
PROCEDURE
|
-
|
procurement
|
-
|
product details
|
-
|
PROFILE
|
(protocol stack)
|
profile overview
|
|
Proof of Concept
|
|
propagation
|
-
|
PROTECTION
|
...against transients, EMC, etc
|
PROTOCOL
|
-
|
Provenance
|
-
|
Provider
|
-
|
PSAP
|
Public Safety Answering Point
|
PSPDN
|
Packet Switched Public Data Network
|
PSS1
|
Private network Q reference point Signalling System number 1
|
PSTN
|
Public Switched Telephone Network
|
PTS
|
Profile Test Specification
|
PUBLIC
|
(network)
|
Public key
|
Public key (encryption)
|
Public Safety
|
-
|
PUM
|
Private User Mobility
|
push
|
Push service (unsolicited information transfer to user)
|
PVC
|
Permanent Virtual Call
|
PWS
|
Public Warning System
|
PWSN
|
People With Special Needs
|
Q3 INTERFACE
|
-
|
QERDS
|
Qualified Electronic Registered Delivery Service
|
QoE
|
Quality of Experience
|
QoE layered model
|
-
|
QoS
|
Quality of Service
|
QREM
|
Qualified Registered Electronic Mail
|
QSIG
|
PTN signalling at the Q reference point
|
QUALITY
|
-
|
quantum cryptography
|
|
Quantum Key Distribution
|
|
Quantum Safe Cryptography
|
-
|
quick ODN
|
-
|
R2
|
Signalling system R2
|
RACK
|
-
|
RADAR
|
-
|
RADIO
|
-
|
radio measurements
|
|
RADIO MIC
|
Wireless microphone
|
radio parameters
|
-
|
radiodetermination
|
-
|
railways
|
-
|
RAN
|
-
|
RAP
|
Radio Application Package
|
RATE
|
(transmission bit rate)
|
RC
|
Remote Control (supplementary service)
|
RCS
|
Rich Communication Suite
|
RDS
|
Radio Data System
|
RDSS
|
Radio Determination Satellite Service
|
real time
|
real time
|
Real World capture
|
-
|
Real-time text
|
-
|
RECEIVER
|
(radio, etc)
|
RED
|
-
|
Referential specification
|
-
|
registered e-delivery services
|
-
|
registered electronic mail
|
-
|
REGISTRATION
|
(see also ADMINISTRATION)
|
REGULATION
|
Signifies relevance to EC Directive.
|
RELAY
|
Radio relay
|
relay services
|
|
release
|
-
|
RELIABILITY
|
|
REM
|
Registered Electronic Mail
|
REMOTE
|
(control, surveillance, etc)
|
remote resources access
|
-
|
remote services access
|
-
|
renewable
|
-
|
REPEATER
|
(radio)
|
REPLICATION
|
of directories, etc
|
REPORT
|
Call report (supplementary service)
|
Request For Proposal (RFP)
|
|
Requirements
|
-
|
RES
|
Radio Equipment and Systems
|
residential network
|
-
|
resilience
|
|
resiliency
|
|
Retained Data
|
-
|
RETENTION
|
Call retention (supplementary service)
|
RETRIEVAL
|
document, database, etc
|
REV
|
Reverse charging
|
Reverberation
|
-
|
reverse
|
-
|
RF HW models
|
-
|
RF/analog impairments
|
-
|
RFID
|
-
|
R-GSM
|
|
RINA
|
-
|
RIS
|
Reconfigurable Intelligent Surfaces
|
risk assessment
|
-
|
risk management
|
-
|
RLAN
|
Radio Local Area Network
|
RLL
|
Radio in the Local Loop
|
RLP
|
Radio Link Protocol (GSM)
|
RNIS
|
|
RO
|
Receive Only
|
ROAMING
|
(mobile)
|
ROBUSTNESS
|
|
router
|
|
routing support
|
-
|
RPF
|
Reverse Power Feed
|
RRS
|
Reconfigurable Radio System
|
RTP
|
-
|
RTTH
|
Radio To The Home (DECT)
|
RTTT
|
Radio Transport and Traffic Telematics
|
Runtime
|
|
S REFERENCE POINT
|
S Reference Point
|
S/MIME
|
-
|
S11
|
interface between the MME and S-GW
|
S1AP
|
S1 Application Protocol
|
SAFETY
|
-
|
SAR
|
Search And Rescue
|
SAREF
|
-
|
SARS-CoV-2
|
-
|
SATELLITE
|
(Cf terrestrial, aeronautical, maritime)
|
SBA
|
Service Based Architecture
|
SBI
|
SouthBound Interface
|
SC
|
Service Centre (GSM)
|
scalability
|
-
|
SCAS
|
Security Assurance Spec
|
SCCP
|
Signalling Connection Control Part (SS7)
|
scenarios
|
-
|
SCF
|
Selective Call Forwarding supplementary service
|
SCFB
|
SCF on Busy supplementary service
|
SCFNR
|
SCF on No Reply supplementary service
|
SCFU
|
SCF Unconditional supplementary service
|
SCHEDULING
|
-
|
SCL
|
SSP Common Layer
|
scoring
|
-
|
SCR
|
Screening (supplementary service)
|
SCRIPT
|
programme, sequence of commands
|
SCS
|
System Conformance Statement
|
SCTP
|
Simple Control Transmission Protocol (IETF)
|
SCWS
|
Smart Card Web Server
|
SDH
|
Synchronous Digital Hierarchy
|
SDL
|
Specification and Description Language
|
SDN
|
Software Defined Networks
|
SDR
|
Software Defined Radio
|
SDS
|
Short Data Service
|
SDSL
|
Symetrical / Short range Digital Subscriber Line
|
SE
|
Serial Call (supplementary service)
|
SECTION
|
(view across interface)
|
secure by default
|
|
secure element
|
-
|
secure e-mail
|
-
|
SECURITY
|
-
|
Security by default
|
-
|
Security mode
|
(Mobile Commerce)
|
Security requirements
|
-
|
SELCALL
|
Selective Calling (radio)
|
Self-Management
|
-
|
self-organization
|
|
Self-organizing
|
-
|
Semantic
|
Semantic
|
semantic reasoning
|
-
|
Sensor
|
-
|
server
|
-
|
SERVICE
|
-
|
service classification
|
-
|
service KQI
|
-
|
service model
|
-
|
Session Initiation Protocol
|
SIP
|
SFC
|
Service Function Chain
|
SG
|
Signalling Gateway
|
SGW
|
Serving Gateway
|
sharing
|
-
|
SHF
|
Super High Frequency (3 GHz to 30 GHz)
|
SHORT NUMBER
|
Short number addressing
|
SHORT RANGE
|
(radio)
|
sign language
|
|
SIGNAL PROCESSING
|
SIGNAL PROCESSIng
|
SIGNALLING
|
|
SIGTRAN
|
Signalling transport (IETF WG)
|
SIM
|
Subscriber Identity Module (GSM)
|
Simulation
|
-
|
SIP
|
Supplementary Information Presentation (supp. service)
|
SIP-I
|
Session Initiation Protocol with encapsulated ISUP
|
SITE ENGINEERING
|
-
|
SLA
|
Service Level Agreement
|
Slicing
|
-
|
SLO
|
Service Level Objectives
|
smart agriculture
|
-
|
Smart Appliance
|
-
|
SMART CARD
|
embedded IC card
|
Smart Cities
|
-
|
smart city
|
|
smart contract
|
|
Smart Escalator
|
|
Smart Grid
|
-
|
Smart Identity
|
-
|
smart industry
|
-
|
Smart Interface
|
-
|
Smart Lift
|
-
|
smart manufacturing
|
-
|
smart meter
|
smart meter
|
Smart Voice-Controlled Device
|
-
|
smart water
|
-
|
Smart Watering
|
-
|
smartphone
|
-
|
SMATV
|
System Master Antenna TV
|
SME
|
Small and Medium-sized Enterprise
|
SMS
|
Short Message Service (GSM)
|
SMSCB
|
SMS Cell Broadcast
|
SMT
|
Surface Mount Technique
|
SN
|
Service Node
|
SNG
|
Satellite News Gathering
|
software
|
|
Software Reconfiguration
|
-
|
Software-Defined Networking
|
-
|
SOHO
|
Small Office Home Office
|
SoLSA
|
Support of Localised Service Area (SoLSA) (GSM)
|
sound
|
sound
|
Southbound Interface
|
-
|
SPACING
|
(between radio transmitters)
|
S-PCN
|
Satellite - Personal Communications Network (Cf PCN)
|
SPECIAL NEEDS
|
cf. Human Factors
|
Spectral Management
|
-
|
spectrum
|
-
|
spectrum regulation
|
-
|
SPEECH
|
-
|
SPI
|
Serial Peripheral Interf
|
Splitter
|
Device for separation of signals
|
SPREAD SPECTRUM
|
(radio transmission)
|
SRD
|
Short Range Device (radio)
|
SRDOC
|
System Reference Document
|
SS7
|
CCITT Common Channel Signalling System No. 7
|
SSB
|
Single Side Band modulation
|
SSCF
|
Service Specific Co-ordination Function
|
SSCOP
|
Service Specific Connection Oriented Protocol
|
SS-CT
|
Call transfer (supplementary service)
|
SSF
|
Service Switching Function
|
SSIG
|
Terminal-Network signalling at the S reference point
|
SSL/TLS certificates
|
-
|
SSP
|
Smart Secure Platform
|
STAGE 1
|
(of three stage method)
|
STAGE 2
|
(of three stage method)
|
STAGE 3
|
(of three stage method)
|
Stakeholders
|
|
standardization impacts
|
-
|
standards framework
|
-
|
standards landscape
|
-
|
state of the art
|
|
STDMA
|
Self-Organizing Time Division Multiple Access
|
stereoscopic
|
-
|
STM
|
Synchronous Transport Module
|
storage
|
-
|
STORE
|
store and forward, stored speech services
|
structure-borne
|
-
|
SUA
|
SCCP-user adaptation layer (IETF)
|
SUB
|
Subaddressing (supplementary service)
|
subjective testing
|
-
|
SUBSCRIBER
|
-
|
subtitle
|
-
|
Superwideband
|
-
|
SUPPLEMENTARY SERVICE
|
Supplementary service (also supp. service or ss.)
|
survey
|
|
Sustainability
|
-
|
SWAPPING
|
-
|
switch
|
|
SWITCHING
|
-
|
SYMBOLS
|
cf. Human Factors
|
SYNCHRONIZATION
|
-
|
SYSTEM
|
-
|
T REFERENCE POINT
|
T Reference point
|
TAA1
|
TETRA Authentication Algorithm number 1.
|
TACTILE
|
MMI for the blind
|
TAXONOMY
|
Taxonomy
|
TC
|
Transaction Capabilities
|
TCAP
|
Transaction Capabilities Application Part (SS7)
|
TCI
|
TTCN-3 Control Interface
|
TCL
|
Test Case Library
|
TCP-based video services
|
-
|
TD-CDMA
|
Time Division - Code-Division Multiple Access
|
TDD
|
Time Division Duplexing
|
TDL
|
-
|
TDM
|
Time Division Multiplex
|
TDMA
|
Time Division Multiple Access (radio)
|
technological challenge
|
-
|
TELEACTION
|
ISDN teleservice
|
TELECOMMAND
|
inc. remote control
|
TELEMETRY
|
-
|
TELEPHONY
|
-
|
TELESERVICE
|
-
|
TELETEX
|
-
|
TELETEXT
|
-
|
Television receivers
|
-
|
TELEX
|
-
|
Tenancy
|
-
|
TERMINAL
|
(as opposed to NETWORK)
|
terminology
|
-
|
TERRESTRIAL
|
(Cf satellite, maritime, aeronautical)
|
TES
|
Transportable Earth Station (satellite)
|
test
|
-
|
Test Tool Interface
|
-
|
TESTING
|
-
|
TETRA
|
TErrestrial Trunked RAdio system
|
TETRAPOL
|
TETRA - Police (FDMA-PMR)
|
TEXT
|
-
|
TFI
|
Terminal Facility Identifier
|
TFT
|
Tabular presentation Format (TTCN-3)
|
TFTS
|
Terrestrial-Flight Telecommunications System
|
TH
|
Trunk Hunting (supplementary service)
|
thermal
|
|
Threat Analysis
|
-
|
threat intelligence
|
|
THz
|
TeraHertz
|
THz component technologies
|
-
|
THz materials
|
-
|
time series
|
time series
|
Timeslicing
|
-
|
Time-stamping
|
(security)
|
TIP
|
Terminating Identification Presentation
|
TIR
|
Terminating Identification Restriction
|
TMN
|
Telecommunications Management Network
|
TONE
|
Information tones on voice terminals/network
|
Total conversation
|
-
|
TP
|
Terminal Portability (supplementary service)
|
TPID
|
Talking party identification (supplementary service)
|
Traceability
|
-
|
TRAFFIC
|
-
|
Train
|
|
transceiver efficiency
|
-
|
transcoding
|
|
transformer
|
|
TRANSIENT
|
... voltage, current, field, etc
|
transition
|
-
|
TRANSMISSION
|
-
|
TRANSMITTER
|
(radio)
|
TRANSPONDER
|
(satellite)
|
TRANSPORT
|
-
|
TRI
|
TTCN-3 Runtime Interface
|
TRUNKING
|
(PMR)
|
trust
|
|
trust services
|
(security)
|
Trustworthy AI
|
-
|
TSP1
|
Test Synchronisation Protocol no. 1
|
TSS&TP
|
Test suite structure & test purposes
|
TTCN
|
Tree and Tabular Combined Notation
|
TTCN-3
|
|
TTP
|
Trusted Third Party
|
Tunnelling
|
-
|
TUP
|
Telephone User Part
|
TV
|
TeleVision
|
TVRO
|
TV Receive Only (satellite earth station)
|
U REFERENCE POINT
|
U reference point
|
UAN
|
Universal Access Number service
|
UCI
|
Universal Communications Identifier
|
UE Identity
|
-
|
UHDTV
|
Ultra High Definition TV
|
UHF
|
Ultra-High Frequency (300 MHz to 3 GHz)
|
UIC
|
Union Internationale des Chemins de fer
|
UICC
|
Universal Integrated Circuit Card
|
UIS
|
User Information System
|
UMB
|
Ultra Mobile Broadband
|
UML
|
Universal modelling language
|
UMTS
|
Universal Mobile Telecommunications System
|
UNB
|
Ultra Narrow Band
|
Unbundling
|
Unbundling in the local loop
|
UNDERGROUND
|
(environment)
|
UNDERWATER
|
(cabling)
|
UNI
|
User-Network Interface
|
UPnP
|
Universal Plug and Play
|
upper layer
|
|
UPS
|
Uninterruptible Power Supply
|
UPT
|
Universal Personal Telecommunications
|
UR
|
User Requirements
|
URI
|
Uniform Resource Identifier
|
usability
|
extent to which a product can be used
|
usage needs
|
-
|
USB
|
Universal Serial Bus
|
USBS
|
User Signalling Bearer Service
|
use case
|
use case
|
USER
|
(as opposed to Network)
|
User-Centric
|
-
|
USSD
|
Unstructured Supplementary Service Data
|
UTRA
|
UMTS Terrestrial Radio Access
|
UUS
|
User-User Signalling (supplementary service)
|
UWB
|
Ultra Wide Band
|
UWC 136
|
Universal Wireless Communication (wrt TIA/EIA 136)
|
V INTERFACE
|
Interface from AN to LE (see Q.500)
|
V+D
|
Voice plus data (TETRA)
|
V2X
|
-
|
V5 INTERFACE
|
(see V INTERFACE)
|
VAD
|
Voice Activity Detection
|
VALIDATION
|
Of functional requirements, such as protocols, etc.
|
VB5 INTERFACE
|
Broadband interface from AN to SN
|
V-band
|
-
|
VC
|
Virtual Call
|
VCC
|
Virtual Card Calling service
|
VCR
|
Video Cassette Recorder
|
VDSL
|
Very high speed Digital Subscriber Line
|
VDSL1
|
|
VDSL2
|
|
VEMMI
|
Videotex Enhanced MMI (see Videotex, MMI)
|
Verifiable Registry
|
-
|
VHE
|
Virtual Home Environment
|
VHF
|
Very High Frequency (30 MHz to 300 MHz)
|
VIDEO
|
-
|
Video Security
|
-
|
Video Surveillance
|
-
|
VIDEOTEX
|
-
|
ViLTE
|
Video over LTE
|
VIM
|
Virtualised Infrastructure Manager
|
virtual services
|
|
Virtualisation
|
Virtualisation
|
VLF
|
Very Low Frequency (3 kHz to 30 kHz)
|
VM
|
Virtual Machine
|
VNF
|
Virtual Network Function
|
Vo5G
|
Voice over 5G
|
VOCABULARY
|
Vocabulary, jargon, technical terms, etc
|
VoDSL
|
Voice over DSL
|
VOICE
|
Voice band (300 Hz to 3,4 kHz) (Cf SPEECH)
|
VoIP
|
Voice over Internet Protocol
|
VoLTE
|
-
|
VoNR
|
Voice over New Radio
|
VOT
|
Tele-Voting service
|
VPN
|
Virtual Private Network
|
VSAT
|
Very Small Aperture Terminal (satellite earth station)
|
VSB
|
Vestigial Side Band amplitude modulation (VSB/AM)
|
Vulnerabilities
|
-
|
WAN
|
Wide Area Network
|
warrant
|
|
warrantry
|
|
WAS
|
Wireless Access Systems
|
Waste management
|
-
|
water consumption
|
-
|
W-band
|
-
|
WCDMA
|
Wideband Code-Division Multiple Access
|
WCG
|
Wide Colour Gamut
|
WDM
|
Wavelength Division Multiplexing
|
WDS
|
Wireless Data Systems
|
Wearable
|
-
|
WEEE
|
Waste of Electric and Electronical Equipment
|
white space
|
-
|
WIDE SCREEN
|
Wide Screen (16:9 aspect ratio for TV screens)
|
Wideband
|
-
|
WiMAX
|
|
Wireless
|
-
|
wireless ad-hoc network
|
-
|
Wireless charger
|
-
|
wireless mesh network
|
-
|
wireless microphone
|
|
wireless microphone system
|
|
WLAN
|
-
|
WLL
|
Wireless Local Loop (DECT)
|
WMAN
|
Wireless Metropolitan Area Network
|
WMAS
|
-
|
WoT
|
Web of Things
|
WPT
|
Wireless Power Transmission
|
WRS
|
Wireless Relay Station (DECT)
|
WTM
|
Wireless Terminal Mobility
|
X.21
|
CCITT Recommendation X.21
|
X.25
|
CCITT Recommendation X.25
|
X.28
|
CCITT Recommendation X.28
|
X.31
|
CCITT Recommendation X.31
|
X.32
|
CCITT Recommendation X.32
|
X.500
|
CCITT Recommendation X.500
|
X.75
|
CCITT Recommendation X.75
|
XAdES
|
XML Advanced Electronic Signature
|
xDSL
|
(generic) Digital Subscriber Line
|
X-Haul
|
-
|
XML
|
Extensible Markup Language
|
XMLERS
|
-
|
YANG
|
Yet Another Next Generation
|