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1x EVDO - 1x EVolution, Data Optimized

2G - 2nd Generation Cellular Network (riferito alle reti di accesso radio GSM/GPRS/EDGE)

256QAM - 256 Quadrature Amplitude Modulation

25GS-PON - 25 Gigabit Symmetric Passive Optical Network

3D - Tridimensionale

3D - Three Dimensions

3G - 3rd Generation (riferito alle reti di accesso radio UMTS/HSPA)

3GPP - 3rd Generation Partnership Project - 3G Partership Project

3GPP SA - 3GPP SErvices and Systems Aspects

4G LTE - 4th Generation LTE (Long Term Evolution)

50G-PON - 50-Gigabit-capable Passive Optical Network

5G - 5th Generation Cellular Network

5GAA  - 5G Automotive Association

5G ACIA - 5G Alliance for Connected Industries and Automation

5G-EIR - 5G Equipment Identity Register

5G NR - 5G New Radio

5G NSA - 5G Non StandAlone 

5G SA - 5G StandAlone

5G PPP - The 5G Infrastructure Public Private Partnership

5GAA - 5G Automotive Association

5GC - 5G Core network

5GIA - 5G Infrastructure Association

5GMS - 5G Media Streaming

5G RG - 5G Residential Gateway

6G - 6th Generation Cellular Network

6G IA - 6G Smart Networks and Services Industry Association

6GHI - 6G Health Institute


AA - Advanced Analytics

AAA - Authentication Authorization and Accounting

AAC - Advanced Audio Coding

AAF - Application Authorization Framework

AAGG GW - Attività Giudiziarie Gateway

AAS - Active Antenna System

AAS - Advanced Antenna System

ABE - Attribute-Based Encryption

ABR - Adaptive Bit Rate

ABR - Adaptive Bitrate Streaming

ABS - Almost Blank Subframes

ABS - Sistema Antibloccaggi

AC - Alternative Current

AC/DC inverter - Convertitore da Alternata a Continua

ACM - Automatic Configuration Management

ACS - Auto Configuration Server

ADAS - Advanced Driver Assistance System

AdR - Area di Raccolta

ADSL - Asymmetrical Digital Subscriber Line

AEB - Automated Emergency Braking

AEEGSI - Autorità per l’Energia Elettrica, il Gas e Servizi Idrici

AENF - Architecture Enabled Network Function

AES - Advanced Encryption Standard

A&AI - Active and Available Inventory

AF - Application Function

AG - Access Gateway

AGCF - Access Gateway Control Function

AGCOM - Autorità per le Garanzie nelle Comunicazioni

AGF - Access Gateway Function

AGF-CP - AGF-Control Plane

AGF-UP - AGF-User Plane

AGI - Artificial General Intelligence

AgID - Agenzia per l‘Italia Digitale

AGN - AGregation Node

AGPS - Assisted Global Positioning System

AGV - Automated Guided Vehicle

AI - Artificial Intelligence

AIxIA - Associazione Italiana di Intelligenza Artificiale

AIF - AI Function

AI/ML - Artificial Intelligence/Machine Learning

AKA - Authentication and Key Agreement

ALM - Application Lifecycle Management

ALU - Arithmetic Logic Unit

AMC - Adaptive Modulation and Coding

AMF - Access and mobility Management Function

AMR - Adaptive Multi Rate

AN - Access Node

ANCI - Associazione Nazionale Comuni Italiani

ANDSF - Access Network Discovery and Selection Function

ANR - Automatic Neighbouring Relations

ANR+PCI - Automatic Neighbours Relations + PCI

ANSI - American National Standards Institute

ANSSI - Agence Nationale de la Sécurité des Système d’Information (National Cybersecurity Agency of France)

AOM - Alliance for Open Media

AON - Active Optical Network

AP - Access Point

API - Application Programming Interface

APM - Active Passive Measure

APN - Access Point Name

APR - Aeromobili a Pilotaggio Remoto

AR - Augmented Reality

ARIB - Association of Radio Industries and Businesses

ARL - Armadi Riparti Linee

ARKit - Augmented Reality Kit, set di librerie Apple per iOS che permettono di fruire di esperienze di Realtà Aumentata sui propri dispositivi mobili

ARP - Address Resolution Protocol

ARPA - Agenzia Regionale per la Protezione Ambientale

ARPIE - Average Radiated Power In the Environment

ARPU - Average Revenue Per User

ARQ - Automatic Repeat-reQuest

AR/VR - Augmented Reality / Virtual Reality

AS - Access Stratum

AS - Apllication Server

AS - Autonomous System

ASI - Agenzia Spaziale Italian

ASIC - Application Specific Integrated Circuit

ASP - Application Service Provider

ATCF - Access Transfer Control Function

A.T.I. - Associazione Temporanea di Imprese

ATIS - Alliance for Telecommunications Industry Solutions

ATM - Asynchronous Transfer Mode

AT&T - American Telephone & Telegraph

ATSSS - Access Traffic Steering Switching Splitting

ATUR - Adsl Terminal Unit Remote

AU - Access Unit

AuC - AUthentication Center

AUSF - Authentication Server Function

AV1 - AOMedia Video 1

AVBR - Available Bit Rate

AVS - Accenture Video Solution

AVS3 - 3rd Audio Video Standard

AWG - Array Waveguide Grating

AWS - Amazon Web Services


B2B - Business to Business

B2C - Business to Consumer

B5G - Beyond 5G

Backhaul - Rete di raccordo per interconnettere le reti di accesso con i nodi di servizio

Backhauling - Tratta di collegamento tra gli apparati di antenna (nodeB) e gli apparati in centrale

BB - Base Band

BB - Broadband

BBF - Broadband Forum

BBN - BackBone Nazionale

BBN - Broad Band Node for fixed voice calls transit

BBRAN - Broad Band Remote Access Node

BBU - Base Band Unit

BBUs - Base Band Units

BC - Blockchain

BDP - Big Data Platform

Beam Forming - Consente di concentrare la potenza del segnale utile verso il cliente, diminuendo l'interferenza verso i clienti serviti dalle altre stazioni

BER - Bit Error Ratio

BEREC - Body of European Regulators of Electronic Communications

BFD - Beamforming

BFD - Bidirectional Forwarding Detection

BGCF - Breakout Gateway Control Function

BGP-LS - Border Gateway Protocol – Link State

BGP - Border Gateway Protocol

BH - Backhauling

BH - Beside Head

BHH - Beside Head & Hand

BLE - Bluetooth 4.0 Low Energy

BLER - Block Error Rate

BMaaS - Bare Metal as a Service

BMP - Banda Minima Garantita

BMS - Building Management System & Remote Monitoring

BNAS - Broadband Network Access Server

BNG - Broadband Network Gateway

BoD - Bandwidth on Demand

BoL - Begin of Life

Bonding - Aggregazione di più linee xDSL in un unico flusso logico

BOS - Business Operating System

BP - Banda di Picco

BPM - Business Process Management

BRAS - Broadband Remote Acces Server

BRIDGE - Bridging Commercial & Societal Transport Digitisation Strategies

BS - Base Station

BSA - Basic Service Area

BSC - Base Station Controller

BSF - Binding Support Function

BSI - Bundesamt für Sicherheit in der Informationstechnik (Federal Office of Information Security)

BSS - Base Station Sub-system

BSS - Basic Service Set

BSS - Business Support System

BTS - Base Transceiver Station

BUL - Banda Ultra Larga

BVLOS - Beyond Visual Line of Sight

BYOL - Bring Your Own Licences


CA - Carrier Aggregation

CA - Certification Authority

CaaS - Container as a Service

CAC - Connession Admission Control

CAD - Computer Aided Design

CAD - Connected and Automated Driving

CAE - Content Adaptive Encoding

CAGR - Compound Annual Growth Rate

CAGR - Compounded Average Growth Rate

CAM - Cooperative Awareness Message

CAMEL - Customized Applications for Mobile network Enhanced Logic

CAP - Capping

CapEx - Capital Expenditure

CAS - Conditional Access System

CAT - Collect Analyze est

CB - Coordinated Beamforming

CBR - Constant Bit Rate

CC - Call Control

CCAM - Connected Cooperative and Automated Mobility

CCD - Cloud Container Distribution

CCE - Codice delle Comunicazioni Elettroniche

CCP - Connect-Compute Platform

CCO - Coverage and Capacity Optimization

CCS - Convergent Charging System

CCSA - China Communications Standards Association

CD - Continuous Development

CDF - Charge Data Function

CDF - Cumulative Density Function

CdM - Consiglio dei Ministri

CDMA - Code Division Multiple Access

CDN - Content Delivery Network

CDN - Content Distribution Network

CDR - Call Data Record

CDU - Central Data Unit

CDV - Variazioni di ritardo

CDVA - Compact Descriptors for Video Analysis

CE - Consumer Electronics

CEA - Consumer Electronics Association

CEI -  Comitato Elettrotecnico Italiano

CEM - Campi Elettromagnetici

CEN - Comité Européen de Normalisation

CENC - Common ENCryption scheme

CENELEC - Comité Européen de Normalisation Électrotechnique

CENSIS - Centro Studi Investimenti Sociali

CEPT - European Conference of Postal and Telecommunications Administrations

CEx - Coexistence Element

CfE - Call for Evidence

CfP - Call for Proposals

CGA - Color Graphics Adapter

CGI - Common Gateway Interface

CGN - Carrier Grade NAT

CH - Corrispondent Host

CI - Cloud Intelligence

CI/CD - Continuous Integration/Continuous Delivery

CI/CD - Continuous Integration/Continuous Deployment

CID - Cell Identifier

CID+TA - Cell Identifier + Timing Advance

CIG - Comitato Italiano Gas

CINECA - Consorzio Interuniversitario del Nord-Est per il Calcolo Automatico

CIoT - Cellular Internet of Things

CISA - Cybersecurity and Infrastructure Security Agency

CLI - Calling Line Identifier 

CLI - Command Line Interface

Cloud - Possibilità di smaterializzare la gestione dei dati e dei processi da una singola località

Cloud4eGov - Infrastruttura Cloud Aperta, Interoperabile e Federata per l’eGovernment delle Città e dei Cittadini

CLR - Eccesiva perdita dati

CM - Configuration Management

CMOS - Complementary Metal Oxide Semiconductor

CMP - Certification Management Protocol

CMPv2 - Certificate Management Protocol v2

CMS - Cloud Management System

CN - Core Network

CNA - CVE Numbering Authorities

CNA - Cloud Native Application

CNAs - Cloud Native Applications

C-NB CSS - Combined Narrow Band and Chirp Spread Spectrum

CNCF - Cloud Native Computing Foundation

CNE - Cloud Native Environment

CNF - Cloud Native Function

CNFs - Cloud native Network Functions

CNI - Cloud Native Infrastructure

CNIT - Consorzio Nazionale Interuniversitario per le Telecomunicazioni

CNN - Convolutional Neural Network

CNO - Centro Nodale Ottico

CNOT quantum gates - Controlled NOT quantum gates

CNR - Consiglio Nazionale delle Ricerche

CNSA - Commercial National Security Algorithm Suite

CO - Central Office

CoA - Change of Authorisation

COA - Care Of Address

CoC - Code of Conduct

COLT - Central Office Long Term

COMAC - Converged Multi-Access and Core

CoMP - Coordinated Multi Point

CORD - Central Office Reengineered as Data center

COS - Class Of Service

COTS - Commercial Off-The-Shelf

CP - Content Provider; Cloud Provider

CP - Control Plane

CP - Content Producer

CPE - Customer Premises Equipment

CPM - Common Policy Manager

CPS - Common Power Supply

CPS - Customer Pre-Selection

CPU - Central Processor Unit

CR - Cognitive Radio

C-RAN - Cloud RAN

CRAN - Cloud RAN

CRAS - Connected Robotics & Autonomous Systems

CRE - Cell Range Expansion

CRI - Cloud Robotics Infrastructure

CRL - Certificate Revocation List

CRM - Customer Relationship Management

CRO - Cabinet Ripartilinee Ottico

CRRM - Common Radio Resource Management

CS - Circuit Switched

CS - Coordinated Scheduling

CSA - Cloud Security Alliance

CSA - Collaboration Support Action

CSCF - Call Session Control Function

CSD - Circuit Switched Data

CSDP - Content Service Delivery Platform

CSFB - Circuit Switched Fall-Back

CSI - Channel State Information

C-SON - Centralized SON

CSP - Cloud Service Provider

CSR - Corporate Social Responsibility

CTF - Charge Trigger Function

CTI - Cyber Threat Intelligence

CU - Central Unit

CU - Coordination Unit 

CUDA - Compute Unified Device Architecture

C-UNB - Cooperative Ultra Narrow Band

CUPS - Control User Plane Separation

C-V2X - Cellular-Vehicle to everything

CVC - Corporate Venture Capital (di TIM)

CVD - Coordinated Vulnerability Disclosure

CVE - Common Vulnerabilities and Exposures

CWDM - Coarse WDM


D2D - Device to Device

DACON - DAta COmmunication Network

DAE - Digital Agenda for Europe

DAM - Digital Assett Management

DAO - Decentralized Autonomous Organization

DApp - Decentralized Application

DAS - Distributed Antenna System

DASH - Dynamic Adaptive Streaming over HTTP

dB - Decibel

DB - Data Base

dBm - Decibel rispetto al mW

DBA - Dynamic Bandwidth Assignment

DBP - Digital Business Platform

DC - Direct Current

DC - Dual Carrier

DC - Data Center

DC/AC inverter - Direct Current

DCAE - Data Collection Analytics and Events

DCC - Data Center Core

DCE-R - Data Center Edge – Regional

DCF - Discount Cash Flow

DCME - Digital Circuit Multiplication Equipment, a voice compression device

DD - Digital Divide

DDOS - Distributed Denial of Services

DDos - Denial of Service

DDS - Data Distribution Service

DEA - Diameter Edge Agent

DECOR - DEdicated CORe Netorks

DEI - Diversity, Equity & Inclusion

DENM - Decentralized Environmental Notification Message

DESI - Digital Economy and Society Index

DevOps - Development and Operations

DFB - Distributed Feedback

DFE - Design For Environment

DG - Directorate General

DH - Diffie-Hellman

DHCP - Dynamic Host Configuration Protocol

DIKW - Data Information Knowledge Wisdom

DIX - Ethernet II

Dl - Decreto legge

DL - Downlink

DL - Deep Learning

DL-UL - Downlink-Uplink

DM - Dual Mode

DMR - Digital Mobile Radio

DMT - Discrete Multi Tone

DNN - Data Network Name

DNN - Deep Neural Networks

DNNs - Deep Neural Networks

DNS - Domain Name System

DOCG - Denominazione di Origine Controllata e Garantita

DOCSIS - Data Over Cable Service Interface Specification

DoS - Denial of Service

DP - Double Polarization

DP - Data Plane

DPBO - Downstream Power Back Off

DPCM - Differential PCM

DPI - Deep Packet Inspection

DP-QPSK - Dual Polarization-Quadrature Phase Shift Keying

DPS - Dynamic Point Selection

DPU - Distribution Point Unit

DR - Directed Retry

DRF - Deep Reference Frame

DRM - Digital Right Management

DRX - Discontinuous Reception

DS - Distribution Service

DS - Downstream

DSA - Digital Signature Algorithm

DSL - Digital Subscriber Line

DSLAM - Digital Subscriber Line Access Multiplexer. Apparecchiatura x fornire ADSL sia in tecnologia ATM che IP

DSM - Dynamic Spectrum Management

D-SON - Distributed SON

DSP - Digital Signal Processors

DSP - Digital Signal Processor/Processing

DSS - Dynamic Spectrum Sharing

DSSS - Direct Sequence Spread Spectrum

DT - Digital Twins

DT - Deutsche Telekom

DTDL - Digital Twin Definition Language

DTEL - Disclosure TEL

DTMF - Dual Tone Multi Frequency

DTT - Digital Terrestrial Television

DTX - Discontinuos Transmission

DU - Distributed Unit

DUT - Device Under Test

DVB - Digital Video Broadcasting

DVBT - Digital Video Broadcasting Television

DVC - Deep Video Compression

D-Wave - Società di calcolo quantistico

DWDM - Dense Wavelength Division Multiplexing (WDM)

DTWS - Digital Transformation Word Series

DX - Digital Experience


E1 - European 1

E164 - E164 Numbering Plan

E2E - End to End

EAM - Electro-Absorption Modulator

EASDF - Edge Application Server Discovery Function

EATA - European Automotive and Telecoms Alliance

EB - Exabyte

EBU - European Broadcasting Union

EC - Edge Computing

ECDH - Elliptic Curve Diffie Hellman

ECID - Enhanced Cell Identifier

Ec/No - Pilot Chip Energy to Interference Power Spectral Density

EC-GSM - Extended Coverage GSM

EC-GSM-IoT - Extended Coverage GSM IoT

ECOMP - Enhanced Control, Orchestration, Management & Policy

E-CORD - Enterprise-CORD

Ecpri - Enhanced CPRI

EDA - Exploratory Data Analysis

EDFA - Erbium Doped Fiber Amplifier

EDGE - Enhanced Data for GSM Evolution

EdgeML - Machine Learning at the Edge

EDL - Enterprise Data Lake

EDR - Endpoint Detection & Response

eDRX - Extended Discontinuous Reception

EE - Energy Efficiency

EEE - Energy Efficiency Enabler

EE ETSI - Environmental Engineering Technical Committee

EEPS - ETSI EE- Product Specifications

EGA - Enhanced Graphics Adapte

EGMF - Exposure Governance Management Function

EGP - Exterior Gateway Protocols

EI - Edge intelligence

eICIC - Evolved Inter Cell Interference Coordination

EIP-SCC - European Innovation Partnership on Smart Cities and Communities

eLTE - 3GPP Option 5 architecture

EM - Element Manager

eMBB - Enhanced Mobile Broadband

eMBMS - Evolved Multimedia Broadcast Multicast Service

EMM - Eps Mobility Management

EMN-Q - European Metrology Network on Quantum Technologies

EMS - Element Management System

eMTC - Enhanced Machine-Type Communication

ENB - Enhanced Node B

eNB - Evolved Node B

ENI - Experiential Networked Intelligence

eNodeB eNB - Enhanced NodeB

EoL - End of Life

EOSC - European Open Science Cloud

EPC - Enhanced Packet Core

EPC - Evolved Packet Core

EPC-5GC - Evolved Packet Core - 5G Core

EPDG - Evolved Packed Data Gateway

EPG - Electronic Program Guide

EPO - European Patent Office

EPON - Ethernet PON

EPR pair - Einsten Podolsky Rosen

EPS - Evolved Packet System

EPS-AKA - Evolved Packet System-AKA

EPSC - European Open Science Cloud

ERP - Enterprise resource planning

ERIS - Enhanced Reinforcement learning for Innovating Self organizing networks

ERTICO - European Road Transport Telematics Implementation Coordination Organization

ES - Energy Saving

ESA - Extended Service Area

ESA - European Space Agency

ESC - Controllo Elettronico di Stabilità

ESG - Environmental, Social and Governance

ESG - Environmental Sustainability Goals

eSIM - Embedded SIM

ESM - Eps Session Management

ESP - Encapsulating Security Payload

ESS - Extended Service Area

ETL - Extract, Transform, Load

ETNO - European Telecommunications Network Operators' Association

ETSI - European Telecommunications Standards Institute

ETSI MSG - ETSI Mobile Standards Group

ETTH - Ethernet To The Home

EU - European Union

EUL - Enhanced UpLink

EUTRA - Evolved Universal Terrestrial Radio Access

EUTRAN - Evolved Universal Mobile Telecommunication System Terrestrial Radio Access Network

EVC - Essential Video Coding

EVDSL - Enhanced Very High-Speed Digital Subscriber Line

EVE - Edge Virtualization Engine


F5G - Fifth Generation Fixed Network

FAB - Fulfillment, Assurance and Billing

FAN - Future Access Network

FANS - Fixed Access Network Sharing

FAQ -. Frequently Asked Questions

FBB - Fixed BroadBand

FBX - FilmBoX Autodesk file format

FCAPS - Fault Configuration Accounting Performance Security

FD - Full Duplex

FDA - Food and Drugs Association

FDD - Frequency Division Duplexing

FD-FDD - Full Duplex-Frequency Division Duplex

FDM - Frequency Division Multiplexing

FDMA - Frequency Division Multiple Access

FDMIMO - Full Dimensional MIMO

FE - Font End

FEC - Forward Error Correction

FED-XAI - Federated Explainable Artificial Intelligence

feICIC - Further enhanced ICIC

Femtocella - Cella indoor con potenza e dimensioni estremamente ridotte

FEV - Voice/Signaling Front-End

FEXT - Far End Cross Talk

FFT - Fast Fourier Transform

FH - Front Hauling

FIFO - First In First Out

FIR - Finite Impulse Response

FLOPS - Floating Point Operations Per Second

FMIF - Fixed Mobile Interworking Function

FMSS - Flexible Mobile Service Steering

FN RG - Fixed Network Residential Gateway

FOADM - Fixed Optical Add Drop Multiplexer

FP - Foreign Proxy

FP7 - Framework Programme 7

FPC - Forwarding Policy Control (IETF)

FPGA - Field Programmable Gate Array

FPGA  - Fixed Programmable Gate Array

FPU - Floating Point Unit

FR - Full Rate

FR1 - Frequency Range 1

FRAND - Fair, Reasonable, And Non-Discriminatory

FSAN - Full Service Access Network

FSE - Fascicolo Sanitario Elettronico

FSO - Free Space Optics

FTP - File Transfert Protocol

FT - Fungible Token

FTTB - Fiber To The Building

FTTC - Fiber To The Cabinet (o Curb)

FTTCab - Fiber To The Cabinet

FTTD - Fiber To The Door

FTTdP - Fiber To The distribution Point

FTTE - Fiber To The Exchange

FTTH - Fiber To The Home

FTTN - Fiber To The Node

FTTP - Fiber To The Premises

FTTR - Fiber to the Room

FTTS - Fiber To The Street

FTTX - Fiber to the X (Cabinet, Building, Home)

FWA - Fixed Wireless Access


GAM - Galleria Civica d'Arte Moderna e Contemporanea

GAN - Generative Adversarial Network

GANs - Generative Adversarial Networks

GBE - Giga Bit Ethernet

GBR - Guaranteed Bit Rate

GCF - Global Certification Forum

GCP - Google Cloud Platform

GCSE LTE - Group Communication

GDK - Glass Development Kit

GDO - Grande Distribuzione Organizzata

GDPR - General Data Protection Regulation

GE - Gigabit Ethernet

GEM - GPON Encapsultion Method

Gen AI - Generative Artificial Intelligence

GEO - Geostationary-Earth Orbit

GEPON - Gigabit Ethernet PON

GERAN - GSM EDGE Radio Access Network

GeSI - Global e-Sustainability Initiative

Gfast - Fast Access to Subscriber Terminals

GFLOPS - G (25.45 miliardi di operazioni in virgola mobile al secondo) FLOPS

GFN - Green Future Networks

GGSN - Gateway GPRS Support Node

GHG - GreenHouse Gas Emissions

GHZ - Greenberger–Horne–Zeilinger

GIS - Geographical Information System

GLB - GLTF binary format

GLTF - Graphics Language Transmission Format

GM - Geometric Monitoring

GMLC - Gateway Mobile Location Center

GMPLS - Generalized Multi-Protocol Label Switching

GMPLS UNI - Generalized Multi-Protocol Label Switching User to Network Interface

GMRE - GMPLS Routing Engine

gNB - g-Node B (stazione radio base NR)

GNSS - Global Navigation Satellite Systems

GO - Garanzia di Origine

GoP - Group of Pictures

GPGPU - General Purpose GPU

GPON - Gigabit-capable Passive Optical Network

GPRS - General Packet Radio Service

GPS - Global Positioning System

GPT - General Purpose Technologies

GPU - Graphic Processing Unit

GRIN - Genetic & personalized medicine, Robots, Internet, Nano material technologies

GSA - Global mobile Suppliers Association

GSM - Global System for Mobile Communications

GSMA - Global System for Mobile Association

GTP - GPRS Tunneling Protocol

GTPC - GPRS Tunneling Protocol Control plane

GTPU - GPRS Tunneling Protocol User plane

GTW-M - Gateway Metropolitano

GUARDIAN - Graphical User Application for the RaDiation Intensity

GUI - Graphical User Interface

GWh - GigaWatt-ora


HCI - Human Computer Interface

HCP - Hyperscale Cloud Provider

HCM - Hybrid Cloud Manager

HD - High Definition

HDC - Heavy Data Center

HD-FDD - Half Duplex-Frequency Division Duplex

HDR - Header

HDR - High Dynamic Range

HDTV - High Definition TV

HDVC AS - High Definition Video Communication Application Suite

Het Net - Heterogeneous Network

HEVC - High Efficiency Video Coding

HGI - Home Gateway Initiative

HLR - Home Location Register

HLS - HTTP Live Streaming

HMI - Human-Machine Interface

HO - Hand Over

HOM - High Order Modulation

HOO - Hand Over Optimization

HP - Home Proxy

HPC - High Performance Computing

HQ - Head Quarter

HR - Half Rate

HSDPA - High Speed Downlink Packet Access

HSPA - High Speed Packet Access

HSPA+ - High Speed Uplink Packed Access evolved

HS-PON - Higher Speed PON

HSS - Home Subscriber Server

HSS - Home Subscriber Services (Authentication)

HSSB - High Speed BroadBand

HSUPA - High Speed Uplink Packet Access

HTML - HyperText Markup Language

HTTP - HyperText Transport Protocol

HTTPS - Hypertext Transfer Protocol Secure

HTTP/TCP - HyperText Transfer Protocol/Transmission Control Protocol

HVAC - Heating, Ventilation, & Air Conditioning

HW - Hardware


IA - Intelligenza Artificiale

IaaS - Infrastructure as a Service

IaC - Infrastructure as code

IAMTS - International Alliance for Mobility Testing and Standardization

IARPA - Intelligence Advanced Research Projects Agency

IBCF - Interconnection Border Control Function

ICE - In Case of Emergency

ICIC - Inter Cell Interference Coordinator

ICMP - Internet Control Message Protocol

ICON - IoT Connectivity Platform

ICS - IMS Centralized Services

ICSCF - Interrogating CSCF

ICT - Information and Communication Technologies

ID - Identificativo

IDC - International Data Corporation

IEC - International Electrotechnical Commission

IEEE - Institute of Electrical and Electronics Engineers

IETF - Internet Engineering Task Force

IF - Intermediate Frequency

IFA - Infrastructure and Architecture

IGP - Interior Gateway Protocols

IIoT - Industrial Internet of Things

IKAA - In Kind Additional Activities

IKE - Integrity Key Exchange

IKOP - In Kind Operations

IM - Intermodulazione

IMA - Inverse Multiplexing over ATM

IM-DD - Intensity Modulation Direct Detection

IMEI - International Mobile Equipment Identity

IMS - IP Multimedia Subsystem

IMS/MMTEL - IMS IP Multimedia Subsystem MMTel - Multi Media TELephony service

IMSI - International Mobile Subscriber Identity

IMSSF - IP Multimedia Service Switching Function

IMT-2000 - International Mobile Telecommunications-2000

IMT-2020 - International Mobile Telecommunications for 2020 and beyond

IMT-Advanced - International Mobile Telecommunication-Advanced

IN - Industrial Network

INAF - Istituto Nazionale di Astrofisica

InP - Infrastructure Provider

INRiM - Istituto Nazionale di Ricerca Metrologica

IOC - Indicatore di compromissione

IoC - Indicator of Compromise

IoE - Internet of Everything

IoMT - Internet of Medical Things

IOPS - Isolated EUTRAN Operation for Public Safety

IoT - Internet of Things

IOT - Interoperability Testing

IP - Internet Protocol

IP5 - Five Intellectual Property Offices

IPCC - International Panel on Climate Change

IPCEI - Important Projects of Common European Interest

IP EDGE - Primo punto della rete in cui viene effettuato il trattamento del protocollo IP

IPFS - InterPlanetary File System

IPGBE - IP/GigaBit-Ethernet

IP/MPLS - Multi Protocol Label Switching

IPoWDM - Internet Protocol over Wavelength Division Multiplexing

IPSec - IP Security

IRP - Integration Reference Point

IRT - Intelligent Ray Tracing

IRU - Indefeasible Right of Use

ISDN - Integrated Services Digital Network

ISDN BRA - Integrated Service Digital Network Basic Rate Access

ISG - Industry Specification Groups

ISG ENI - ISG Experiential Network Intelligence

ISG ZSM - ISG Zerotouch network and Service Management

ISM - Industrial Scientific Medical

IP-SM-GW - IP Short Message Gateway

ISO - International Organization for Standardization

ISP - Internet Service Provider

ISTAT - Istituto nazionale di STATistica

IT - Information Technology

ITS - Intelligent Transport Systems

ITU - International Telecommunication Union

ITU-R - International Telecommunication Union - Radio Communication Sector

ITU-T - International Telecommunication Union - Telecommunication Standardization Sector

IVR - Interactive Voice Response

IWT - Internet With Things


J2C - Journey to Cloud

JPO - Japan Patent Office

JRC - The Joint Research Centre (group)

JSON - Java Script Object Notation

JU - Joint Undertaking

JVET - Joint Video Experts Team


K8s - Kubernetes

KEM - Key Encapsulation Mechanism

KG - Key Generation

KIPO - Korean Intellectual Property Office

KPI - Key Performance Indicator

KPN - Koninklijke PTT Nederland

KPO - Key Performance Objectives

KVI - Key Value Indicators


LA - Local Aggregator

LAG - Link Aggregation Group

LAN - Local Area Network

LANE - LAN Emulation

LB - Load Balancing

LBO - Local Break Out

LBS - Location Based Services

LBT - Listen Before Talk

LCA - Life Cycle Assessment

LCEVC - Low Complexity Enhancement Video Coding

LCM - Life Cycle Management

LCOS - Liquid Crystal On Silicon

LCT - Life Cycle Thinking

LDAP - Light weight Directory Access Protocol

LDC - Loan Data Center

LDP - Label Distribution Protocol

LDPC - Low Density Parity Check

LDU - Local Data Unit

LEA - Law Enforcement Agencies

LENS - European Laboratory for Non-Linear Spectroscopy

LEO - Low-Earth Orbit

LFN - Linux Foundation Networking

LI - Lawful Interception

LKA - Lane Keeping Assist

LLM - Large Language Models

LLQ - Low Latency Queuing

LMR - Land Mobile Radio

LNS - L2TP Network Server

LOCC - Local Operations and Classical Communication

LPP - LTE Positioning Protocol

LPs - Limited Partners

LPWAN - Low Power Wide Area Networks

LSP - Label Swithed Path

LTCO - Long Term Central Office

LTE - Long Term Evolution

LTE-Advanced - Long Term Evolution Advanced

LTEA - LTE Advanced

LTE/EPC  - Long Term Evolution/Evolved Packet Core

LTE-LAA - LTE-Licensed Assisted Access

LTE-U - LTE-Unlicensed

LWE - Learning With Errors

LWP - Low Water Peak

LXC - Linux container


M2M - Machine to Machine

MA - Macro Area di raccolta

M-ABR - Multicast Adaptive Bitrate

MAC - Media Access Control

MAC - Medium Access Control

MAN - Metropolitan Area Network

MANO - MANagement and Orchestration

MARCONI - Mobility Appraisal by multi-Regional Communication Network Implementation

MARIN - Metro Access Rings Integrated Network

MASA - Mesh of applications, API and Services

MB - Multi Band

MBB - Mobile Broadband

Mbps - Megabit per secondo

MBSFN - Multimedia Broadcast Single Frequency Network

MCCH - Multicast Control CHannel

M-CORD - Mobile-CORD

MCS -  Modulation and Coding Scheme

MCTS - MonteCarlo Tree Search

MDA - Monochrome Display Adapter

MDT - Minimization of Drive Test

MEC - Mobile Edge Computing

MEC - Multi-access Edge Computing

MEH - Massive Events Handling

MEMS - Micro-Electro-Mechanical Structures

MeNB - Master eNodeB

MEO - Medium-Earth Orbit

MGCF - Media Gateway Control Function

MGW - Media Gateway Function

MH - Mobile Host; Middle Hauling

MHA - Mast Head Amplifier

MHN - Mobile Home Network

MIE - Mobilità Intelligente Ecosostenibile

MIF-NET - Multi-Frame In-Loop Filter

MIMD - Multiple Instructions, Multiple Data

MIMO - Multiple Input Multiple Output

MIND - Milano Innovation District

MIoT - Massive Internet of Things

MIP - Mobile IP

MIPS - Mega Instruction Per Second

MISO - Multiple Input Single Output

MISP - Malware Information Sharing Platform

MIT - Massachusetts Institute of Technology

MIUR - Ministero dell’Istruzione, dell’Università e della Ricerca

MIX - Milan Internet eXchange

ML - Machine Learning

MLB - Mobile Load Balancing

MLOps - Machine Learning Operations

MM - clientela residenziale Mass Market

MM - Multi Mode

MM - Mobility Management

MMCS - Multi Media Communication Suite

MME - Mobility Management Entity

MME - Mobility Management Engine (Control)

MMS - Multimedia Messaging Service

mMTC - Massive Machine Type Communication

MMTEL - Multimedia Telephony

MMTELAS - Application Server MultiMedia Telephony

mmW - millimeter Wave

MNO - Mobile Network Operator

MnS - Management Service

MOBINET - Europe-Wide Platform for Connected Mobility Services

MoCap - abbreviazione di Motion Capture, è il processo di registrazione del movimento del corpo umano

MOF - Microwave Over Fibre

MoU - Memorandum of Understanding

MP - Management Plane

MPAI - Moving Picture, Audio and Data Coding by Artificial Intelligence

MPAI-EEV - AI-based End-to-End Video Coding

MPAI-EVC - AI-Enhanced Video Coding

MPEG - Moving Picture Experts Group

MPLS - MultiProtocol Label Switching

MPLS TP - MPLS Transport Profile

MPM - Multi PON Module

MPN - Mobile Private Network

MPOA - Multi Protocol Over ATM

Mpx - Megapixel

MPX - Multiplex

MR - Mixed Reality, AR mediante appositi visori che ne permettono la fruizione con le mani libere

MRF - Multimedia Resource Function

MRO - Mobility Robustness Optimization

MS - Mobile Station

MSA - Multi-Source Agreement

MSAN - MultiService Access Node

MSC - Mobile Switching Centre

MSC-S - Mobile Switching Center-Server

MSF - Multi-Service Fabric

MSG-TFES - Mobile Standards Group-Task Force for the production of Harmonised Standards under the RED for the IMT family

MSISDN - Mobile Station International Subscriber Digital Number

MSR BS - Multi Standard Radio Base Station

MSRP - Message Session Relay Protocol

MS_SDI - Multi-dimensional Service space for telecommunication Software Defined Infrastructures

MS-SSIM - Multi-Scale Structural Similarity Index

MTAS - Mobile Telephony Application Server

MTC - Machine Type Communication

MTC-IWF - Machine Type Communication - InterWorking Function

MTRF - Mobile Terminating Roaming Forward

MTTO - Mean time To Obsolescence

MTTR - Mean Time To Repair

MUBB - Mobile Ultra Broadband

MUMIMO - Multi User Multiple Input Multiple Output

MVN - Mobile Visited Network

MVNO - Mobile Virtual Network Operators

mVoIP - Mobile Voice over IP

MVP - Minimum Viable Product

MW - MicroWave

MWC - Mobile World Congress


N2C - Network to Cloud

NAAS - Network As A Service

NAM - Multifunctional Access Nodes

NAMA - Neighbor-Aware Multiple Access

NAMS - Network Aware M2M Sleep

NAS - Non Access Stratum

NAS - Network Access Server

NAT - Network Address Translation

NB-IoT - NarrowBand Internet of Things

NB-M2M - Narrow Band M2M

NB-OFDMA - Narrow Band-Orthog- Narrow Band-Orthogonal Frequency-Division Multiple Access

NDA - Next Best Action

NDE - Next Best Experience

NDVI - Normalized Difference Vegetation Index

NE - Network Element

NEF - Network Exposure Function

NEM - Network Element Manager

NEs - Network Elements 

NETCONF - NETwork CONFiguration protocol

NF - Network Functions

NFC - Near Field Communication

NFs - Network Functions

NFT - Non-Fungible Token

NFV - Network Functions Virtualization

NFVI - Network Functions Virtualization Infrastructure

NFVO - NFV Orchestrator

NFVOPS - NFV (Network Function Virtualization) Operational Tools

NGA - Next Generation Access

NGAN - Next Generation Access Network

NGAN - Mach-Zender Interferometer Next Generation Access Nerwork

NGAP - NG Application Protocol

NGA-VHCN - Next Generation Access–Very High Capacity Networks

NGCN - Next Generation Core Network

NGDC - Next Generation Data Center

NGMN - Next Generation Mobile Networks (group)

NGN - Next Generation Network

NGOSS - Next-Generation Operations Support Systems

NG-PON - Next Generation-PON

NG-PON2 - Next Generation-PON 2

NGPON2 - Next-Generation PON (Passive Optical Network) 2

NG PoP - Next Generation Point of Presence

NG-RAN - Next Generation Radio Access Network

N-GSM - Narrow Band GSM

NHRP - Next Hop Resoltution Protocol

NIC - Network Interfa­ce Card

NICT - National Institute of Information and Communications Technology

NIO - Network Intelligent Operations

NISQ - Noisy Intermediate-Scale Quantum

NIST - National Institute of Standards and Technology

NLM - Network Light Management

NLP - Natural Language Processing

NM - Network Manager

NMS - Network Management System

NNVC - Neural Network-based Video Coding

NOC - Network Operation Center

npm - Node Package Manager

NPN - Non-Public Network

NPS - Net Promoter Score

NPU - Network Processing Unit

N-PVR - Network Programmable Video recorder

NR - New Radio

NRA - Autorit… Nazionali di Regolamentazione

NRF - Network Repository Function

NRI - Network Reselection Improvements

NR SA - New Radio Stand Alone

NRZ - Non Return to Zero

NS - Network Services

NSA - Non-StandAlone

NSA - National Security Agency

NSA 5G - Non-StandAlone 5G

NSAP - Network and Service Automation Platform

NSSF - Network Slicing Selection Function

NTN - Non-Terrestrial Networks

NUE GW - Gateway per servizio NUE (numero unico emergenza)

NUMA - Non-Uniform Memory Access

NVD - National Vulnerability Database

NVDP - National Video Distribution Platform

NVT - Network Virtual Terminal

NWDAF - Network Data Analytics Function


O&M - Operation & Maintenance

OADM - Optical Add Drop multiplexer

OAM - Operation Administration and Maintenance

OAO - Other Authorised Operator

OB-BAA - Open Broadband-Broadband Access Abstraction

OBS - Optical Burst Switching

OCI - Oracle Cloud Infrastructure

OCP - Open Computer Project

OCS - Optical Channel Switching

OCS - Online charging system

OCSP - Online Certification Status Protocol

O-CU - O-RAN Central Unit

O-CU-CP - O-RAN Central Unit Control Plane

O-CU-UP - O-RAN Central Unit User Plane

ODA - Open Digital Architecture

ODF - Open Digital Franework

ODF - Optical Distribution Frame

ODN - Optical Distribution Network

ODU - Optical Data Unit

O-DU - O-RAN Distributed Unit

OECD - Organization for Economic Co-operation and Development

OEM - Original Equipment Manufacturer

OEO - Ottico Elettro Ottica (conversione effettuata dal transponder)

OEO - Optical Electrical Optical

OFCS - Offiline Charging Service

OFDM - Orthogonal Frequency Division Multiplexing

OFDMA - Orthogonal Frequency Division Multiple Access

OFS - Optical Flow Switching

OLA - Optical Line Amplifier

OLI - Open Lamda Initiative

OLO - Other Licensed Operators

OLS - Optical Label Switching

OLS - Open Line System

OLT - Optical Line Termination

OMA - Open Mobile Alliance

OMA3 - Open Metaverse Alliance for Web3

OMEC - Open Evolved Mobile Core

OMEC - Open Mobile Edge Cloud

OMTP - Open Mobile Terminal Platform

ONAP - Open Network Automation Platform

ONF - Open Networking Forum

ONF - Open Network Foundation

ONT - Optica Network Termination

ONU - Optical Network Unit (Cabinet)

OPB - Optical Packet Backbone

OPC - Optical Packet Core

OpenCL - Open Computing Language

OpEx - Operational Expenditure

OPM - Optical Packet Metro

OPNFV - Open Platform for NFV

OPR - Optical Packet Regional

OPS - Optical Packet Switching

OPUs - Optical Processing Units

O-RAN - Open Radio Access Network

O-RU - O-RAN Radio Unit

OS - Operating System

OSA - Open Service Architecture

OSASCS - Open Service Architecture Service capability Server

OSI - Open Systems Interconnection

OSINT - Open Source Intelligence

OSPF - Open Shortest Path First

OSS - Operation Support System

OT - Operational Technology

OTA - Over The Air

OTIC - Open Testing and Integration Centre

OTN - Optical Transport Network

OTP - One-Time-Pad

OTT - Over The Top

OUI - Organizationally Unique Identifier

OUT - Optical Transport Unit


P2MP - Point To MultiPoint

P2P - Peer To Peer

P25 - Project 25

P4P - Proactive network Provider Participation for P2P

PA - Pubblica Amministrazione

PaaS - Platform as a Service

PANAMA - Predictive Algorithms for Network Alarms MAnagement

PAPR - Peak to Average Power Ratio

PAS - Publicly Available Specification

PBX - Private Branch eXchange

PC - Protocol Control

PCC - Path Computation Client

PCC - Policy Control and Charging

PCC - Policy and Charging Control

PCE - Path Computation Element

PCEF - Policy and Charging Enforcement Function

PCEP - Path Computation Element Protocol

PCF - Policy Control Function

PCF - Point Coordination Function

PCI - Physical Cell Identifier

PCI - Protocol Control Information

PCRF - Policy and Charging Rules Function

PCR - Peak Cell Rate

PCRF - Policy and Charging Rules Function

PCS - Probabilistic Constellation Shaping

P-CSCF - Proxy Call Session Control Function

PCSP - Public Cloud Service Provider

PDC - Personal Digital Cellular

PDCP - Packet Data Convergence Protocol

PDH - Plesiocronous Digital Hierarchy

PDN - Packet Data Network

PDN Context - Packet Data Network Contest

PDN GW - Packet Data Network Gateway

PDP Context - Packet Data Processing Context

PDSCH -  Physical Downlink Shared Channel

PDU - Packet Data Unit

PE - Provider Edge (router IP)

PE - Primary Elements

PEC - Posta Elettronica Certificata

PECF - Policy and Charging Enforcement Function

PEV - Plans EVolution

PGW - Packet Data Network Gateway

PGW-C - Packet Gateway Control

PGW-U - Packet Gateway User

PIC - Photonic Integrated Circuit

PKI - Public Key Infrastructure

PLC - Power Line Communication

PLC - Programmable Logic Controllers

PLMN - Public Land Mobile Network

PM - Performance Management

PMI - Punto di Mutualizzazione di Immobile

pmi - Precoding Matrix Indicator

PMI - piccole, medie imprese

PMIP - Proxy Mobile IP

PMN - Public Mobile Network

PMR - Private Mobile Radio

PNDV - Piattaforma Nazionale Distribuzione Video

PNF - Phisical Network Functions

PNI - Private Network Interconnect

PNI-NPN - Public Network Integrated Non-Public Network

PNPM - Packet Network Performance Monitoring

PNRR - Piano Nazionale di Ripresa e Resilienza

PoC - Proof of Concept

PON - Passive Optical Networks

POP - Point Of Presence

PPA - Power Purchasing Agreement

PPP - Public Partnership Project

PPP - Point to Point Protocol

PPPoE - PPP over Ethernet

PPV - Pay per View

PQC - Post Quantum Cryptography

PR - Preliminary

PRB - Physical Resource Block

PRESA - Predictive QoS and V2X Service Adaptation

ProSe - Proximity Services

PS - Packet Switched

PS - Public Safety

PS - Pubblica Sicurezza

PSCE - Public Safety Communication Europe

PSCE - Public Safety Conference Europe

PSD - Densità spettrale di potenza

PSD - Power Spectral Density

PS HO - Packet Service Hand Over

PSK - Phase Shift Keying

PSM - Power Saving Mode

PSN - Polo Strategico Nazionale

PSNR - Peak Signal-to-Noise Ratio

PSTN - Public Switched Telephone Network

PTC - Punto di Terminazione in Centrale

PTCRB - PCS Type Certification Review Board

PTE - Punto di Terminazione di Edificio

PTN - Packet Transport Network

PTO - Punto di Terminazione Olo

PTT - PushToTalk

PTZ - Pan-Tilt-Zoom

PVC - Permanent Virtual Connection

PW - PseudoWire


QAM - Quadrature Amplitude Modulation

QAOA - Quantum Approximate Optimization Algorithm

QC - Quantum Computing

QC - Quantum Computer

QCI - Qos Class Identifier

QCIT-ETC - Emerging Technical Committee on Quantum Communications and Information Technology

QComm Hub - Quantum Communications Hub

QGA - Quantum Gate Array

QGM - Quantum Geometric Monitoring

QICT - Quantum Information and Communication Technologies

QKD - Quantum Key Distribution

QoE - Quality of Experience

QoS - Quality of Service

QPSK - Differential Quadrature Phase Shift Keying

QPU - Quantum Processing Unit

QRNG - Quantum Random Number Generators

Qubit - Quantum bit

QUBO - Quadratic Unconstrained Bi­nary Optimization


R&D - Research and Development

RA - Routing Area

RA - Regional Aggregation

RA-crypto - Registration Authority

RADIUS - Remote Authentication Dial-In User Service

RAM - Random Access Memor

RAN - Radio Access Network

RAN (std) - Radio Access Network (std)

RAN1 - RAN Working Group 1

RAN2 - RAN Working Group 2

RAN4 - RAN Working Group 4

RAN5 - RAN Working Group 5

RAT - Radio Access Technology

RATI - Radio Access Technology Indicator

RBAC - Role Based Access Control

RC - Coefficienti di riflessione

RC - Regional Core

RCAF - Radio Access Network Congestion Function

R-CORD - Residential CORD

RCS - Rich Communication Suite

RCS - Rich Communication Services

RCTP - Real Time Transport Protocol

RD - Reference Design

RE - Resource element

REST - REpresentational State Transfer

RESTART - RESearch and innovation on future Telecommunications systems and network, to make Italy more smart

RET - Remote Electrical Tilt

RF - Radio Frequency

RFC - Request For Comments

RFID - Radio Frequency IDentification

RFON - Reconfigurable Flexible Optica Network

RG - Residential Gateway

RG-LWAC - RG-Level Wireline Access Characteristics

RIC - Radio Intelligent Controller

RIC - RAN Intelligent Controller

RICH - Rich Communication Services

RIS - Reconfigurable Intelligent Surfaces

RL - Reinforcement Learning

RLC - Radio Link Control

RLF - Radio Link Failure

RN - Relay Node

RN - Remote Node

RNC - Radio Network Controller

ROADM - Reconfigurable Optical Add Drop Multiplexer

ROE - Ripartitore Ottico di Edificio

ROF - Radio Over Fiber

ROI - Return On Investment

ROM - Receiver-Only-Mode

ROPO - Research On Line, Purchase Off Line

ROS - Robot Operating System

RP - RAT/Frequency Selection Priority

RPA - Robotic Process Automation

RPF - Reverse Power Feeding

RRC - Radio Resource Control

RRM - Radio Resource Management

RRP - Radio Resource Pool

RRU - Radio Remote Unit

RRUs - Remote Radio Unit

RS - Reference Signal

RSA - Algoritmo di crittografia asimmentrica

RSCP - Received Signal Code Power

RSOA - Reflective Semiconductor Optical Amplifier

RSRP - 4G LTE Reference Signal Received Power

RSRP - Received Signal Received Power

RSRQ - Received Signal Received Quality

RSRQ - Reference Signal Radio Quality 

RSU - Road Side Unit

RSVP - ReSerVation Protocol

RSVP-TE - ReSerVation Protocol-Traffic Engineering

RT - Real Time

RTA - Road Traffic Authority

RTC - Real Time Charging

RTCP - Real Time Transport Control Protocol

RTD - Responsabili per la Transizione Digitale

RTG - Rete Telefonica Generale

RTMS - Radio Telefono Mobile di Seconda generazione

RTN - Rete di Trasporto Nazionale

RTNSM - Real Time Network and Service Management

RTP - Real Time Protocol

RTSP - Real Time Streaming Protocol

RTT - Round Trip Time

RU - Remote Unit

RU - Radio Unit

Rx/Tx - Ricezione/trasmissione

RXTX_TIMEDIFF - Rx/Tx UE Time Difference


SA - StandAlone

SA - Intelligent Speed Assistance

SA5 - Systems and Service Aspects WG 5

SaaS - Software-as-a-Service

SAAS - Software As A Service

SAE - System Architecture Evolution

SAE GW - System Architecture Evolution Gateway

SAFe - Simple Agreement for Future Equity

SAGA - Swarm robotics for AGricultural Applications

SAN - Storage Area Network

SAP - Service Access Point

SAQ - Self Assessment Questionnaire

SAR - Specific Absorption Rate

SARDANA - Scalable Advanced Ring Dense Access Network Architecture

SASE - Secure Access Service Edge

SBA - Service Based Architecture

SBC - Session Border Controller

SBI - Service Based Interfaces

SCADA - Supervisory Control and Data Acquisition

SCC - Smart Cities and Communities

SCC AS - Service Centralization and Continuity Application Server

SCEF - Service Capability Exposure Function

SCEP - Simple Certificate Enrolment Protocol

SCFDMA - Single Carrier Frequency Division Multiple Access

SCSCF - Serving CSCF

SCP - Service Control Point

SCPTM - Single Cell Point To Multipoint

SCR - Sustainable Cell Rate

SCS - Services Capability Server

SCTP - Signalling Control Transport Protocol

SDAN - Software-Defined Access Networks

SDAP - Service Data Adaptation Protocol

SDDC - Software-defined data center

SDF - Service Data Flow

SDG - Sustainable Development Goals

SDGs - Sustainable Development Goals

SDH - Synchronous Digital Hierarchy

SDK - Software Development Kit

SDK - Software Development Toolkit

SDMA - Space Division Multiple Access

SDN - Software Defined Network

SDO - Software Defined Operator

SDO - Standard Developing Organizations

SDP - Session Description Protocol

SDP - Digital Service Delivery Platform

SDP - piattaforme software defined

SDP - Software Defined Platforms

SDR - Software Defined Radio

SD-WAN - Software Defined Wide Area Network

Sec GW - Security Gateway

SeNB - Secondary eNodeB

SEP - Sensor Enabled Platform

SEP - Standard Essential Patent

SFC - Space Frequency Coding

SFN - Single Frequency Network

SG - Study Group

SGSN - Serving GPRS Support Node

SGT - Stadio di Gruppo di Transito

SGU - Stadio di Gruppo Urbano

SGW - Serving GateWay

SGW-C - Services Gateway Control

SGW-U - Services Gateway User

SIEM - Security information and event management

SIM - Subscriber Identity Module

SIMD - Single instruction, multiple data

SIMO - Single Input to Multiple Output

SINR - Signal over Interference plus Noise Ratio

S.IN.TE.S.I. - Sistema Integrato Tecnologie per il Servizio Idrico

S[M2]ART SMART - Metro Quadro – Guardando la città metro per metro

SIP - Session Initiation Protocol

SIPAS - SIP Application Server

SISO - Single Input Single Output

SKT - SK Telecom

SL - Stadio di Linea

SLA - Service Level Agreement

SLF - Subscription Locator Function

SLg - Interfaccia SLg

SLh - Interfaccia SLh

SLs - Interfaccia SLs

SLU - Sub Loop Unbundling

SM - Spatial Multiplexing

SME - Small Medium Enterprise

SMF - Session Management Function

SMILE - Smart Mobility Inclusion Life&health Energy

SMLC - Serving Mobile Location Center

SMN - Self-produced content Modeled Network

SMO - Service Management and Orchestration

SMP - Significant Market Power

SMS - Short Message Service

SMTP - Simple Mail Transfer Protocol

SN - Service Node

SNAP - SubNetwork Access Protocol

SNCP - SubNetwork Connection Protection

SNMP - Simple Network Management Protocol


SNPN - Stand-alone Non-Public Network

SNR - Signal over Noise Ratio

SNS - Smart Network and Services

SNS ICE - SNS International Cooperation Ecosystem

SNS JU - Smart Network and Services Joint Undertaking

SNS JU - 6G Smart Network & Services Joint Undertaking

SOA - Service Oriented Architecture

SOA - Semiconductor Optical Amplifier

SOAP - Simple Object Access Protocol

SoC - System on Chip

SOC - Security operation center

SOHN - Sustainable Open Heritage Network

SOHO - Small Office Home Office

SOI - Silicon On Insulator

SOM - Systems on Module

SON - Self Organizing Networks

SP - Service Provider

SPDC - Spontaneous Parametric Down Conversion

SPID - Subscriber Profile Identifier

Splitter - Diramatore ottico passivo

SQL - Structured Query Language

SRA - Seamless Rate Adaption

SRB - Stazione Radio Base

SRE - Site Reliability Engineering

SR-IOV - Single Root Input/Output Virtualization

SRLG - Shared Risk Link Group

SRMC - Servizio Radio Mobile di Comunicazione

SRTP - Secure RTP

SRVCC - Single Radio Voice Call Continuty

SS - Soft Swithc; Support System

SSH - Secure Shell

SSID - Service Set Identifier

SSLA - Service and Security Level Agreement

SSM - Static Spectrum Management

SSO - Single Sign On

STB - Set Top Box

STC - Space Time Coding

STP - Signal Transfer Point

STS - Ship-to-shore

SUCI - Subscription Concealed Identifier

SUPER - A SUstainable Edge for Highly Demanding, HyPER-distributed Servi

SUPI - Subscription Permanent Identifier

SUPL - Secure User Plane Protocol

SVC - Switched Virtual Connection

SVOD - Subscription Video On Demand

SW - Software


TACS - Total Access Communications System

TAM - Telecom Application Map

TAPE - Turin Action Plan for Energy

TAU - Tracking Area Update

TAXII - Trusted Automated Exchange of Intelligence Information

TB - Transport Block

TC - Triple Carrier

TC - Coefficienti di trasmissione

TCO - Total Cost of Ownership

TCP - Transmission Control Protocol

TDD - Time Division Duplexing

TDD - Time Division Duplex

TDF - Traffic Detection Function

TDM - Time Division Multiplexing

TDMA - Time Division Multiple Access

TE - Traversale elettrico

TEAM - Tomorrow’s Elastic, Adaptive Mobility

TEC - Thermo-Electric Cooler

TED - Traffic Engineering Database

TEN-T - Trans European Networks Transport

TETRA - TErrestrial Trunked RAdio

TIC - Transparent Internet Caching

TIMatom - TIM AuTOmation Measurement

TIP - Telecom Infra Project

TIP - Threat Intelligence Platform

TIR - Terminazione Intelligente di Rete

TLC - Telecomunicazioni

TLS - Transport Layer Security

TM - Trace Management

TM Forum - Telemanagement Forum

TMSI - Temporary Mobile Subscriber

TN - Transport Node

TOGAF - The Open Group Architecture Framework

ToIP - Telephony over IP

TOPO - Try Off Line, Purchase On Line

TPC/IP - Transmission Control Protocol/IP

TPF - Transformation Project Framework

TPL - Traffico Pubblico Locale

TPU - Tensor Processor Unit

TR - Transport

TS - Traffic Steering

TSDN - Transport SDN

TSDSI - Telecommunications Standards Development Society India

TSG - Technical Specification Group

TTA - Telecommunications Technology Association

TTC - Telecommunication Technology Committee

TTCN - Testing and Test Control Notation

TTI - Transmission Time Interval

TTM - Time to Market

TTP - Tactics, Techniques and Procedures

TVA - Time Variant Antennas

TVOD - Transactional Video On Demand

TWAG - Trusted Wlan Access Gateway

TWDM - Time and Wavelength Division Multiplexed


UA - User Agent

UAC - User Agent Client

UADSL - Universal ADSL

UAS - User Agent Server

UBB - Ultra Broadband

UBR - Unspecified Bit Rate

UDC - User Data Convergence

UDDI - Universal Description Discovery and Integration

UDM - Unified Data Management

UDP - User Data Protocol

UDR - User Data Repository

UDWDM - Ultra Dense WDM

UE - Unione Europea

UE - User Equipment

UE2UE - User Equipment to User Equipment

UI - Unit… Immobiliare

UICC - Universal Integrated Circuit Card

UL - Uplink

ULH - Ultra Lung Haul

ULL - Unbundling Local Loop

UHD - Ultra High Definition

Ultra-HD - Ultra High Definition

UI - User Interface

UMB - Ultra Mobile Broadband

UMTS - Universal Mobile Telecommunication System

UNI - Ente nazionale italiano di unificazione

UNI - User to Network Interface

UNINFO - Tecnologie Informatiche e loro applicazioni

UP - User Plane

UPBO - Upstream Power Back Off

UPC - Usage Parameter Control

UPCON - User Plane Congestion Management

UPF - User Plane Function

UPS - Uninterruptible Power Supply

URBeLOG - URBan Electronic LOGistics

URI - Uniform Resource Identifier

URL - Uniform Resource Locator

URLLC - Ultra Reliable Low Latency Communication

URSP - UE Route Selection Policy

US - Upstream

USB - Universal Serial Bus

USIM - Universal Subscriber Identity Module

UTA - Unità Trattamento Aria

UTDM - Unified TIM Data model

UTM - Unmanned Traffic Management

UTRAN - UMTS Terrestrial Radio Access Network

UTRAN - Universal Terrestrial Radio Access Network

UTT - Under The Top

UV T-Growth - United Ventures T Growth

UX - User Experience


V2I - Vehicle to Infrastructure

V2N - Vehicle to Network

V2P - vehicle to pedestrian

V2V - Vehicle To Vehicle

V2X - Vehicle-to-X

V2X - Vehicle-to-everything

vAN - virtual Access Network

VAS - Value Added Services

VBR - Variable Bit Rate

VCC - Virtual Channel Connection

VCI - Virtual Channel Identifier

VCM - Video Coding for Machines

VCMS - Video Content Management System

VCSEL - Vertical Cavity Surface Emitting Laser

VDCN - Virtual Data Center Network

VDSL - Very high bit rate DSL

VDSL2 - Very High Speed Digital Subscriber Line 2

Vectoring - Il segnale trasmesso su tutte le linee dello stesso cavo sono processati per la cancellazione della diafonia

VGA - Video Graphics Array

ViLTE - Video over LTE

VIM - Virtualised Infrastructure Manager

VIM - Virtual Infrastructure Manager Virtualization

VLAN - Virtual LAN (Local Area Network)

VLR - Visitor Location Register

VM - Virtual Machine

VMAF - Video Multi-Method Assessment Fusion

VMM - Visual Voice Mail

VNF - Virtual Network Function

VNFM - Virtual Network Function Manager

VNO - Virtual Network Operator

VNTP - Virtual Network Topology Manager

VOD - Video On Demand

VoIMS - Voice Over IMS

VoIP - Voice Over IP

vOLT - Virtual OLT (Optical Line Termination)

vOLT-HA - Virtual Optical Line Termination-Hardware Abstraction

VoLTE - Voice over LTE

VoNR - Voice over New Radio

VPA - virtual personal assistant

VPC - Virtual Path Connection

VPI - Virtual Path Identifier

VPIA - Valutazione Preventiva dell’Impatto Archeologico

VPLS - Virtual Private LAN Service

VPN - Virtual Private Network

VQE - Variational Quantum Eigensolver

VR - Virtual Reality

v-RAN - Virtualized Radio Access Network

VRU - Vulnerable Road User

VSEI - Versatile Supplemental Enhancement Information

VTN - Virtual Tenant Network

VULA - Virtual Unbundling Local Access (disaggregazione virtuale dell'accesso locale)

VVC - Versatile Video Coding

VVM - Visual Voice Mail

VXLAN - Virtual eXtensible LAN


W3C - World Wide Web Consortium

WAC - Whosale Applications Community

WACC - Weighted Average Cost of Capital

WAF - WebRTC Authorization Function

WAN - Wide Area Network: rete geografica

W-CDMA - Wideband Code Division Multiple Acces

WDM - Wavelength Division Multiplexing

WE - Europa occidentale

WEB - World Wide Web

WebRTC - Web Real Time Communication

WEF - World Economic Forum

WFQ - Weighted Fair Queuing (accodamento equo ponderato)

WG - Working Group

WI - Work Item

WIC - WebRTC IMS Client

WIFI - Wireless Fidelity

WIMAX - Worldwide Interoperability for MicroWave access

WL - WorkLoad

WLCP - Wlan Control Protocol

WLAN - Wireless Local Area Network

WLR - Wholesale Line Rental

WMA-PON - Wavelength Multiplexed and Amplified PON

WMS - Warehouse Management System

WSDL - Web Services Description Language

WSON - Wavelength Switched Optical Network

WSN - Wireless Sensor Network

WSS - Wavelength Selective Switching

WWC - Wireless Wireline Convergence

WWSF - WebRTC Web Server Function

WWW - World Wide Web


X2 - Application Protocol (X2AP)

XaaS -“X” as a Service 

XDSL - Indica i diversi tipi di connessione DSL (Digital Subscriber Line)

XDSL - X Digital Subscriber Line

XG-PON1 - 10 Gigabit-capable PON

XG-PON - 10 Gigabit-capable PON (Passive Optical Network)

XGSPON - 10 Gigabit-capable Symmetric PON (Passive Optical Network)

xMBB - Extreme Mobile Broadband

XML - eXtensible Markup Language

XR - eXtended Reality


YANG - Yet Another Next Generation


ZOOM - Zero-touch, Orchestration, Operations and Management

ZSM - Zero-touch network and Service Management

ZTL - Zona a Traffico Limitato

ZTM - Zero Touch Management

ZTNA - Zero Trust Network Access