Skip to content
Join the Live Open Session - Introduction to 5G, 27th October, 13:00 (UK Time). Free for Unlimited Access users | £95.00 for non-members
We’re attending MWC Barcelona 2026
From 2–5 March 2026, meet the Mpirical team and explore industry-led telecoms training. Find us in Hall 4, Stand CS300
Glossary header - telecoms antenna at height over fields

Glossary

Explore our library of thousands of telecoms terms and acronyms defined for on-the-job reference or learning new material.

# A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Glossary Results

UI

Unconfirmed Information

UI Channel

User Isochronous data Channel

UIM

User Identity Module

ULI

User Location Information

Unbalanced line

Unbalanced line

UNI

User to Network Interface

Unicode

Unicode

Unidirectional channel

Unidirectional channel

UNIX

UNIX

URI

Uniform Resource Identifier

User information

User information

User Zone Registration

User Zone Registration

USIM

UMTS Subscriber Identity Module

V reference point

V reference point

V2I

Vehicle-to-Infrastructure

VCI

Virtual Channel Identifier

Verisign

Verisign

VID

VLAN Identifier

Videophone

Videophone

ViLTE

Video over LTE

VIM

Virtualized Infrastructure Manager

Voice memo

Voice memo

Voice Privacy

Voice Privacy