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

5 6 7 8 9 ...

CLIR

Connected Line Identification Restriction

Closest Match Routing

Closest Match Routing

CMIP

Client Mobile IP

Combinational Code

Combinational Code

Community Strings

Community Strings

Companding

Companding

Compression

Compression

Confidentiality

Confidentiality

Configuration Change Indicator

Configuration Change Indicator

Connectable Device

Connectable Device

Conversational Service

Conversational Service

Convolutional Code

Convolutional Code

CPICH

Common Pilot Channel

CPIM

Common Profile for Instant Messaging

CPRI

Common Public Radio Interface

CQI

Channel Quality Indicator

CRI

CSI-RS Resource Indicator

CriC

Critical Communications

CS-RNTI

Configured Scheduling - RNTI

CSI

CAMEL Subscription Information

CSI-RS

Channel State Information - Reference Signal

CSICH

CPCH Status Indicator Channel

CTI

Cyber Threat Intelligence

CUG Index

Closed User Group Index

5 6 7 8 9 ...