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 ...

CS

Circuit Switched

CS-RNTI

Configured Scheduling - RNTI

CSA

Call Segment Association

CSC

Communication Service Customer

CSCF

Call Session Control Function

CSE

CAMEL Service Environment

CSFB

Circuit Switched Fallback

CSG

Closed Subscriber Group

CSI

CAMEL Subscription Information

CSI-RS

Channel State Information - Reference Signal

CSICH

CPCH Status Indicator Channel

CSL

Component Sublayer

CSMA

Carrier Sense Multiple Access

CSMA/CA

Carrier Sensing Multiple Access / Collision Avoidance

CSMA/CD

Carrier Sense Multiple Access with Collision Detection

CSMF

Communication Service Management Function

CSP

Communication Service Provider

CSPDN

Circuit Switched Public Data Network

CSPF

Constrained Shortest Path First

CSRC

Contributing Source

CSRN

CS domain Routing Number

CTS

Clear To Send

CVSD

Continuous Variable Slope Delta Modulation

D-CSI

Dialled Service - CAMEL Subscription Information

5 6 7 8 9 ...