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

14 15 16 17 18 ...

NDSS

Network Directed System Selection

NE-DC

NR - E-UTRA Dual Connectivity

NGEN-DC

NG-RAN - E-UTRA Dual Connectivity

NGEN-DC

NG-RAN - E-UTRA-NR Dual Connectivity

NID

Network Identification

NIDD

Non IP Data Delivery

Node-B

Node B

NPDU

Network Protocol Data Unit

NR-DC

New Radio Dual Connectivity

NSD

Network Service Descriptor

NSDU

Network Service Data Unit

Nudm

UDM Service-based Interface

Null Modem

Null Modem

Null Traffic Channel Data

Null Traffic Channel Data

NWDAF

Network Data Analytics Function

OFDM

Orthogonal Frequency Division Multiplexing

OFDMA

Orthogonal Frequency Division Multiple Access

OMA-DM

Open Mobile Alliance Device Management

Optical Budget

Optical Budget

OSI Reference Model

OSI Reference Model

OTD

Orthogonal Transmit Diversity

OTDOA

Observed Time Difference On Arrival

Out of Band Signalling

Out of Band Signalling

Overhead

Overhead

14 15 16 17 18 ...